Enlighten Contracting TV Repair Test

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  • 1/52 Questions

    Technology Comparison 1/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Can be back-lit using Edge Lighting

    • Plasma
    • LED
    • LCD
    • None of the above
    • More than one of the above
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About This Quiz

This test is designed to test your general knowledge of TV repair and ability to troubleshoot. Contrary to the previous email, this test only contains 52 questions. You will have 65 minutes to complete the test. If granted an interview, there will be a second, live written test as supplied by Samsung.
Topics:Technology Comparison /17 See moreBasic Circuit Board Theory /9 Circuit Troubleshooting /26

Enlighten Contracting TV Repair Test - Quiz

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  • 2. 

    Technology Comparison 2/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Use Cold Cathode Reflective Lamps (CCFL's) backlighting

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. LCD
    Explanation
    LCD (Liquid Crystal Display) technology uses Cold Cathode Reflective Lamps (CCFL's) for backlighting. CCFL's are a type of fluorescent lamp that provide a consistent and even backlight for LCD screens. This technology offers several benefits such as lower power consumption, longer lifespan, and better color reproduction compared to other technologies like Plasma and LED. However, LCD screens also have some disadvantages including limited viewing angles and slower response times. Therefore, the given answer "LCD" is correct as it correctly attributes the use of CCFL's backlighting to LCD technology.

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  • 3. 

    Technology Comparison 3/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Screens design based on a shutter assembly designed to filter back-lighting

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. More than one of the above
    Explanation
    The given answer "More than one of the above" suggests that the attribute of screens designed based on a shutter assembly designed to filter back-lighting can be attributed to multiple technologies, including Plasma, LED, and LCD. This means that all of these technologies have the capability to incorporate a shutter assembly for filtering back-lighting in their screen designs.

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  • 4. 

    Technology Comparison 4/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Can display sRBG colour gamut

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. More than one of the above
    Explanation
    The correct answer is "More than one of the above." This means that multiple technologies can display the sRBG color gamut. It does not specifically attribute this feature to any one technology, such as Plasma, LED, or LCD. Therefore, it can be concluded that more than one of these technologies have the capability to display the sRBG color gamut.

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  • 5. 

    Technology Comparison 5/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Screens constructed of “cells” containing mercury and other gases that get energized

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. Plasma
    Explanation
    Plasma technology utilizes screens constructed of "cells" containing mercury and other gases that get energized. This allows for the creation of vibrant and high-quality images on the screen. However, plasma screens tend to be heavier and bulkier compared to other technologies. They also consume more power and have a shorter lifespan. Despite these disadvantages, plasma screens are known for their excellent color reproduction, wide viewing angles, and fast response times, making them a popular choice for home theater enthusiasts and professional applications.

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  • 6. 

    Technology Comparison 6/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Are most optimally constructed with a perfectly round screen

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. None of the above
    Explanation
    None of the above. The statement suggests that the attribute of being most optimally constructed with a perfectly round screen does not apply to any of the mentioned technologies (Plasma, LED, LCD).

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  • 7. 

    Technology Comparison 7/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Susceptible to image burn

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. Plasma
    Explanation
    Plasma technology is susceptible to image burn. This means that if a static image is displayed on a plasma screen for an extended period of time, it can leave a permanent ghost image on the screen. This is a disadvantage of plasma technology compared to LED and LCD technologies, which are not as prone to image burn.

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  • 8. 

    Technology Comparison 8/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Produces Highest Refresh Rates

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. Plasma
    Explanation
    Plasma technology is attributed to producing the highest refresh rates compared to LED and LCD technologies. Plasma displays use tiny cells filled with ionized gas to create images, allowing for faster refresh rates and smoother motion. This attribute is beneficial for activities that involve fast-paced motion, such as gaming or sports viewing. However, plasma screens are also known for their higher energy consumption and the risk of screen burn-in.

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  • 9. 

    Technology Comparison 9/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Wall Mountable

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. More than one of the above
    Explanation
    The correct answer is "More than one of the above." This means that the attribute "Wall Mountable" applies to more than one technology mentioned in the question, which includes Plasma, LED, and LCD. This suggests that all three technologies can be wall-mounted, providing the benefit of saving space and offering flexibility in placement. However, without further information, we cannot determine the advantages or disadvantages of wall-mounting for each technology.

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  • 10. 

    Technology Comparison 10/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Most Susceptible to screen-door effect

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. Plasma
    Explanation
    Plasma technology is the most susceptible to the screen-door effect. The screen-door effect refers to the visible grid pattern that can be seen on the display, resembling a screen door. This effect is more prominent in plasma displays compared to LED or LCD technology. Plasma displays use small cells filled with electrically charged ionized gases to produce images, and the gaps between these cells can cause the screen-door effect. LED and LCD displays, on the other hand, use different technologies that do not have this issue to the same extent.

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  • 11. 

    Technology Comparison 11/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Thinnest production technology to date

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. LED
    Explanation
    LED (Light Emitting Diode) technology is attributed as the thinnest production technology to date. LED screens are much thinner compared to Plasma and LCD screens. This attribute provides various benefits such as sleek design and space-saving capabilities. LED screens also offer advantages like energy efficiency, longer lifespan, and better picture quality. On the other hand, Plasma and LCD screens are thicker and have their own advantages and disadvantages. However, LED technology stands out as the thinnest option among the given choices.

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  • 12. 

    Technology Comparison 12/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Produces Highest Contrast Ratios

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. Plasma
    Explanation
    Plasma technology produces the highest contrast ratios compared to LED and LCD technologies. Plasma displays have the ability to produce deep blacks and vibrant colors, resulting in a high contrast ratio between the darkest and brightest parts of the image. This enhances the overall image quality and provides a more immersive viewing experience. LED and LCD technologies, although they have their own advantages, cannot match the contrast ratios achieved by plasma displays.

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  • 13. 

    Technology Comparison 13/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Comprises a majority of TV market

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. LCD
    Explanation
    LCD technology comprises a majority of the TV market. This means that LCD TVs are the most commonly used and popular type of TVs in the market. LCD technology offers several benefits such as high-quality image display, wide viewing angles, and energy efficiency. However, LCD TVs also have some disadvantages like limited contrast ratio and potential motion blur.

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  • 14. 

    Technology Comparison 14/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Performance can be negatively impacted by altitude

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. Plasma
    Explanation
    Plasma technology can be negatively impacted by altitude. This means that the performance of plasma displays may decrease when used at high altitudes. The lower air pressure at higher altitudes affects the functioning of the plasma cells, which can result in reduced image quality and overall performance. LED and LCD technologies do not have this disadvantage.

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  • 15. 

    Technology Comparison 15/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Only come in larger screen sizes due to economic constraints

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. Plasma
    Explanation
    Plasma technology only comes in larger screen sizes due to economic constraints. This means that plasma TVs are typically available in larger sizes compared to other technologies like LED and LCD. The economic factors involved in producing plasma screens make it less feasible to manufacture smaller sizes. Therefore, if a consumer is looking for a smaller screen size, plasma technology would not be a suitable option.

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  • 16. 

    Technology Comparison 16/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Have the worst “off-angle” picture quality

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. LCD
    Explanation
    LCD technology has the worst "off-angle" picture quality compared to Plasma and LED. LCD screens use liquid crystals to manipulate light, and when viewed from an angle, the crystals may not align properly, resulting in a decrease in picture quality. Plasma and LED technologies generally have better off-angle viewing capabilities, providing a more consistent and accurate picture quality from different viewing positions.

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  • 17. 

    Technology Comparison 17/17 Attribute the Following Features, Benefits, advantages, and disadvantages to the applicable technology. -Most “environmentally sustainable” do to longer rated life and lower energy usage

    • Plasma

    • LED

    • LCD

    • None of the above

    • More than one of the above

    Correct Answer
    A. LED
    Explanation
    LED technology is attributed with the feature of being "environmentally sustainable" due to its longer rated life and lower energy usage. LEDs have a longer lifespan compared to other technologies such as Plasma and LCD, which means they need to be replaced less frequently, reducing electronic waste. Additionally, LEDs consume less energy to produce the same level of brightness, resulting in lower energy usage and reduced carbon emissions. Therefore, LED technology is considered more environmentally friendly compared to Plasma and LCD technologies.

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  • 18. 

    Basic Circuit Theory 1/9A Capacitor is used to...

    • Regulate current in a circuit

    • Step up or step down voltage to a desired level

    • Regulate voltage in a circuit

    • Restrict electron flow in one direction

    • None of the above

    Correct Answer
    A. Regulate voltage in a circuit
    Explanation
    A capacitor is used to regulate voltage in a circuit. It stores electrical energy in the form of an electric field. When the voltage across the capacitor exceeds a certain threshold, it releases the stored energy, thereby regulating the voltage. This makes capacitors useful in smoothing out voltage fluctuations and stabilizing the voltage level in a circuit. Capacitors do not regulate current, step up or step down voltage, restrict electron flow in one direction, or have no effect on the circuit.

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  • 19. 

    Basic Circuit Theory 2/9A Diode is used to...

    • Regulate current in a circuit

    • Step up or step down voltage to a desired level

    • Regulate voltage in a circuit

    • Restrict electron flow in one direction

    • None of the above

    Correct Answer
    A. Restrict electron flow in one direction
    Explanation
    A diode is a semiconductor device that allows current to flow in one direction while blocking it in the opposite direction. This characteristic of a diode restricts electron flow in one direction, making it the correct answer. A diode can be used in various applications such as rectification, signal demodulation, and voltage clamping. However, it is not used to regulate current, step up or step down voltage, or regulate voltage in a circuit.

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  • 20. 

    Basic Circuit Theory 3/9An Inductor is used to...

    • Regulate current in a circuit

    • Step up or step down voltage to a desired level

    • Regulate voltage in a circuit

    • Restrict electron flow in one direction

    • None of the above

    Correct Answer
    A. Regulate current in a circuit
    Explanation
    An inductor is used to regulate current in a circuit. An inductor stores energy in a magnetic field when current flows through it. It resists changes in current by inducing a voltage opposite to the change in current. This property allows an inductor to smooth out fluctuations in current and regulate its flow in a circuit.

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  • 21. 

    Basic Circuit Theory 4/9A Band-Pass Filter is used to is used to...

    • Regulate current in a circuit

    • Step up or step down voltage to a desired level

    • Regulate voltage in a circuit

    • Restrict electron flow in one direction

    • None of the above

    Correct Answer
    A. None of the above
    Explanation
    A Band-Pass Filter is used to selectively pass a certain range of frequencies while attenuating others. It is commonly used in signal processing to filter out unwanted frequencies and allow only the desired frequencies to pass through. It does not regulate current or voltage, nor does it restrict electron flow in one direction. Therefore, the correct answer is "None of the above".

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  • 22. 

    Basic Circuit Theory 5/9A Transformer is used to is used to...

    • Regulate current in a circuit

    • Step up or step down voltage to a desired level

    • Regulate voltage in a circuit

    • Restrict electron flow in one direction

    • None of the above

    Correct Answer
    A. Step up or step down voltage to a desired level
    Explanation
    A transformer is a device that is used to transfer electrical energy between two or more circuits through electromagnetic induction. It consists of two coils, known as the primary and secondary coils, which are wound around a common iron core. By varying the number of turns in each coil, a transformer can either step up or step down the voltage to a desired level. This allows for efficient transmission of electrical power over long distances and the ability to match the voltage requirements of different electrical devices. Therefore, the correct answer is that a transformer is used to step up or step down voltage to a desired level.

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  • 23. 

    Basic Circuit Theory 6/9A material is Superconducting when...

    • Resistance is very low

    • Resistance is zero (0)

    • Resistance is infinite

    • Current travels only in one direction

    • None of the above

    Correct Answer
    A. Resistance is zero (0)
    Explanation
    Superconducting materials have the property of zero electrical resistance. This means that when a superconducting material is cooled below its critical temperature, it can conduct electricity without any loss of energy due to resistance. This phenomenon allows for the flow of current without any voltage drop, making superconductors highly efficient for various applications such as power transmission, magnetic levitation, and MRI machines.

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  • 24. 

    Basic Circuit Theory 7/9Why is AC current used in the transmission system, as opposed to DC current?

    • Resistance in wire makes DC power prohibitively expensive to transmit more than a few kilometers

    • DC power is generators can be dangerous due to sparking during non-contact cycles

    • Transformers do not work in DC circuits

    • None of the about

    • All of the above

    • More than one of the above

    Correct Answer
    A. All of the above
    Explanation
    AC current is used in the transmission system instead of DC current due to several reasons. Firstly, the resistance in wire causes a significant power loss in DC transmission, making it expensive to transmit over long distances. Secondly, DC power generators can be dangerous due to sparking during non-contact cycles, posing a safety risk. Lastly, transformers, which are essential for voltage regulation and efficient power transmission, do not work in DC circuits. Therefore, all of the above reasons contribute to the preference of AC current in the transmission system.

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  • 25. 

    Basic Circuit Theory 8/9Which of the following is the equation for Ohm's Law in DC circuits? (E-Voltage, I-Current, R-Resistance).

    • E=I/R

    • I=E/R

    • E=I*R

    • Non of the above

    • All of the above

    • More than one of the above

    Correct Answer
    A. More than one of the above
    Explanation
    The equation for Ohm's Law in DC circuits is E=I*R, which states that the voltage (E) across a conductor is equal to the current (I) flowing through it multiplied by the resistance (R) of the conductor. Additionally, the equation I=E/R and E=I/R are also valid representations of Ohm's Law in DC circuits. Therefore, the correct answer is "More than one of the above" as all three equations are correct representations of Ohm's Law.

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  • 26. 

    Basic Circuit Theory 9/9With a single voltage source, in simple series circuits ____________, while in simple parallel circuits __________.

    • ...voltage is additive and current is constant...voltage is constant while current is additive.

    • ...voltage is constant while current is additive...voltage is additive and current is constant.

    • ...voltage and current are additive... voltage and current are constant.

    • ...voltage and current are constant... voltage and current are additive.

    • None of the above

    • More than one of the above

    Correct Answer
    A. ...voltage is additive and current is constant...voltage is constant while current is additive.
    Explanation
    In simple series circuits, voltage is additive, meaning that the total voltage across the circuit is equal to the sum of the individual voltage drops across each component. On the other hand, current remains constant throughout the circuit. In simple parallel circuits, voltage is constant, meaning that the voltage across each component is the same as the total voltage across the circuit. However, current is additive, meaning that the total current flowing into the circuit is equal to the sum of the currents flowing through each individual component.

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  • 27. 
    Troubleshooting 1/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "A": - ProProfs

    Troubleshooting 1/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "A":

    • De-Energize

    • No Effect

    Correct Answer
    A. De-Energize
  • 28. 
    Troubleshooting 2/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "B": - ProProfs

    Troubleshooting 2/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "B":

    • De-Energize

    • No Effect

    Correct Answer
    A. No Effect
    Explanation
    If there is a break in "B" in the circuit, it will have no effect on the light bulb. The break in "B" does not interrupt the flow of electricity to the light bulb, so the bulb will remain energized.

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  • 29. 
    Troubleshooting 3/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "C": - ProProfs

    Troubleshooting 3/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "C":

    • De-Energize

    • No Effect

    Correct Answer
    A. No Effect
    Explanation
    If there is a break in "C" in the circuit, it will have no effect on the light bulb. This means that the light bulb will not de-energize and will continue to remain on.

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  • 30. 
    Troubleshooting 4/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "D": - ProProfs

    Troubleshooting 4/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "D":

    • True

    • False

    Correct Answer
    A. False
    Explanation
    For a break in "D", the light bulb will not de-energize. This is because the break in "D" does not interrupt the flow of electricity in the circuit. The current can still flow through the other paths in the circuit, keeping the light bulb energized.

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  • 31. 
    Troubleshooting 5/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "E": - ProProfs

    Troubleshooting 5/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "E":

    • De-Energize

    • No Effect

    Correct Answer
    A. De-Energize
  • 32. 
    Troubleshooting 6/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "F":   *****END OF THIS DIAGRAM***** - ProProfs

    Troubleshooting 6/26 The following SIX (6) questions correspond to the following diagram.  Determine if the light bulb will de-energize for each of the following breaks in the circuit. Consider just one break at a time:        For a break in "F":   *****END OF THIS DIAGRAM*****

    • De-Energize

    • No Effect

    Correct Answer
    A. De-Energize
  • 33. 
    *****BEGINNING OF NEW DIAGRAM*****   Troubleshooting 7/26 The following THREE (3) questions correspond to the following diagram. The following circuit has a problem. When the switch is closed, the lamp does not turn on:  Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    a) Light bulb filament failed open     - ProProfs

    *****BEGINNING OF NEW DIAGRAM*****   Troubleshooting 7/26 The following THREE (3) questions correspond to the following diagram. The following circuit has a problem. When the switch is closed, the lamp does not turn on:  Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    a) Light bulb filament failed open    

    • Possible

    • NOT possible

    Correct Answer
    A. Possible
    Explanation
    The possible explanation for the given correct answer is that if the light bulb filament has failed open, it means that there is a break in the filament, causing an open circuit. This would prevent the flow of electricity and result in the lamp not turning on when the switch is closed. Therefore, it is possible for a failed open filament to account for the problem observed in the circuit.

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  • 34. 
    Troubleshooting 8/26 The following THREE (3) questions correspond to the following diagram. The following circuit has a problem. When the switch is closed, the lamp does not turn on:  Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    b) Switch failed shorted     - ProProfs

    Troubleshooting 8/26 The following THREE (3) questions correspond to the following diagram. The following circuit has a problem. When the switch is closed, the lamp does not turn on:  Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    b) Switch failed shorted    

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    If the switch failed shorted, it means that the switch is stuck in the closed position, causing a direct connection between the power source and the lamp. In this case, when the switch is closed, the lamp should turn on. However, the question states that the lamp does not turn on when the switch is closed, indicating that the switch failed shorted is not possible as the hypothetical fault.

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  • 35. 
    Troubleshooting 9/26 The following THREE (3) questions correspond to the following diagram. The following circuit has a problem. When the switch is closed, the lamp does not turn on:  Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    c) Switch failed open   *****END OF THIS DIAGRAM***** - ProProfs

    Troubleshooting 9/26 The following THREE (3) questions correspond to the following diagram. The following circuit has a problem. When the switch is closed, the lamp does not turn on:  Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    c) Switch failed open   *****END OF THIS DIAGRAM*****

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    The answer "NOT Possible" means that the hypothetical fault of the switch failing open cannot account for the problem described in the question. This suggests that the switch is not the cause of the lamp not turning on when it is closed.

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  • 36. 
    *****BEGINNING OF NEW DIAGRAM*****   Troubleshooting 10/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    a) Battery is dead     - ProProfs

    *****BEGINNING OF NEW DIAGRAM*****   Troubleshooting 10/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    a) Battery is dead    

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    The given answer states that the fault of the battery being dead is NOT possible to account for the problem. This is because the circuit is functioning partially, with switch #1 able to control lamp #1. If the battery were dead, neither lamp would be able to turn on. Therefore, the battery being dead is not a possible explanation for the problem.

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  • 37. 
    Troubleshooting 11/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    b) Switch #2 failed open     - ProProfs

    Troubleshooting 11/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    b) Switch #2 failed open    

    • Possible

    • NOT Possible

    Correct Answer
    A. Possible
    Explanation
    If switch #2 failed open, it means that the switch is not making a complete circuit when it is turned on. This would prevent current from flowing through lamp #2, causing it to not come on. Therefore, this hypothetical fault could account for the problem described in the circuit.

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  • 38. 
    Troubleshooting 12/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    c) Switch #2 failed shorted     - ProProfs

    Troubleshooting 12/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    c) Switch #2 failed shorted    

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    If Switch #2 failed shorted, it means that there is a direct connection between the two terminals of the switch, bypassing the lamp #2. This would result in lamp #2 always being on, regardless of the position of Switch #2. However, the problem stated in the question is that lamp #2 never comes on, indicating that there is no current flowing through it. Therefore, Switch #2 failed shorted is not possible as the cause of the problem.

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  • 39. 
    Troubleshooting 13/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    d) Switch #1 failed open     - ProProfs

    Troubleshooting 13/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    d) Switch #1 failed open    

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    If Switch #1 failed open, it means that the switch is not making a connection and is permanently in the open position. In this case, it would not be possible for Switch #1 to control lamp #1. Since the question states that Switch #1 is able to control lamp #1, it indicates that Switch #1 is functioning properly. Therefore, Switch #1 failed open is not a possible fault that could account for the problem described.

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  • 40. 
    Troubleshooting 14/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    e) Switch #1 failed shorted     - ProProfs

    Troubleshooting 14/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    e) Switch #1 failed shorted    

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    If Switch #1 failed shorted, it means that the switch is stuck in the closed position, causing a constant flow of current through lamp #1. In this scenario, lamp #1 would be continuously on and lamp #2 would not come on, which aligns with the symptoms exhibited by the circuit. Therefore, this fault is possible.

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  • 41. 
    Troubleshooting 15/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    f) Open wire between test points 1 and 2 (between TP1 and TP2)     - ProProfs

    Troubleshooting 15/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    f) Open wire between test points 1 and 2 (between TP1 and TP2)    

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    An open wire between test points 1 and 2 would not affect the functioning of lamp #2. Since switch #1 is able to control lamp #1, it indicates that the circuit is intact and there is no problem with the connection between test points 1 and 2. Therefore, an open wire between test points 1 and 2 is not possible as a fault that could account for the problem of lamp #2 not coming on.

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  • 42. 
    Troubleshooting 16/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    g) Open wire between test points 5 and 6 (between TP5 and TP6)   *****END OF QUESTIONS RELATING TO THIS PROBLEM***** - ProProfs

    Troubleshooting 16/26 The following SEVEN (7) questions correspond to the following diagram. The following circuit has a problem. Switch #1 is able to control lamp #1, but lamp #2 never comes on no matter what is done with switch #2:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    g) Open wire between test points 5 and 6 (between TP5 and TP6)   *****END OF QUESTIONS RELATING TO THIS PROBLEM*****

    • Possible

    • NOT Possible

    Correct Answer
    A. Possible
    Explanation
    An open wire between test points 5 and 6 (between TP5 and TP6) could potentially account for the problem of lamp #2 not coming on. If there is an open wire between these two test points, it would prevent the flow of electricity to lamp #2, resulting in it not turning on. Therefore, this hypothetical fault is possible given the symptoms exhibited by the circuit.

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  • 43. 
    *****SAME DIAGRAM, DIFFERENT PROBLEM*****   Troubleshooting 17/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    a)  Battery is dead - ProProfs

    *****SAME DIAGRAM, DIFFERENT PROBLEM*****   Troubleshooting 17/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    a)  Battery is dead

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    If the battery is dead, it means that there is no power being supplied to the circuit. In this case, neither switch #2 nor switch #1 would be able to control the lamps because there is no power to the circuit. Therefore, it is not possible for the battery being dead to account for the problem of lamp #1 not coming on.

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  • 44. 
    Troubleshooting 18/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    b)  Lamp #1 filament failed open - ProProfs

    Troubleshooting 18/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    b)  Lamp #1 filament failed open

    • Possible

    • NOT Possible

    Correct Answer
    A. Possible
    Explanation
    The filament of Lamp #1 failing open is a possible explanation for the problem because if the filament is open, it means there is a break in the circuit and current cannot flow through the lamp, preventing it from turning on.

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  • 45. 
    Troubleshooting 19/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    c)  Lamp #2 filament failed open - ProProfs

    Troubleshooting 19/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    c)  Lamp #2 filament failed open

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    If the filament of Lamp #2 failed open, it means that there is a break in the filament and the lamp would not be able to light up. However, in the given circuit, it is mentioned that Lamp #2 is able to be controlled by Switch #2. This implies that Lamp #2 is functioning properly and the filament is not failed open. Therefore, the hypothetical fault of Lamp #2 filament failed open is NOT possible in this scenario.

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  • 46. 
    Troubleshooting 20/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    d)  Switch #2 failed open - ProProfs

    Troubleshooting 20/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    d)  Switch #2 failed open

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    If switch #2 failed open, it means that the circuit would be open and lamp #2 would not receive any power. However, since lamp #2 is able to be controlled by switch #2, it indicates that switch #2 is functioning properly. Therefore, switch #2 failed open is not a possible fault that could account for the problem described.

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  • 47. 
    Troubleshooting 21/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    e)  Switch #2 failed shorted - ProProfs

    Troubleshooting 21/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    e)  Switch #2 failed shorted

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    If switch #2 failed shorted, it means that it is stuck in the closed position, causing a direct connection between the power source and lamp #2. This would result in lamp #2 being constantly on, regardless of the state of switch #1. However, the problem stated in the question is that lamp #1 never comes on, indicating that there is no power reaching lamp #1. Therefore, switch #2 failing shorted cannot account for the problem described in the question.

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  • 48. 
    Troubleshooting 22/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    f)  Switch #1 failed open - ProProfs

    Troubleshooting 22/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    f)  Switch #1 failed open

    • Possible

    • NOT Possible

    Correct Answer
    A. Possible
    Explanation
    If switch #1 failed open, it means that the switch is not making a connection when it is turned on. This would explain why lamp #1 never comes on, as the open switch prevents current from flowing to the lamp. Therefore, this fault is possible and could account for the problem.

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  • 49. 
    Troubleshooting 23/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    g)  Switch #1 failed shorted - ProProfs

    Troubleshooting 23/26 The following TEN (10) questions correspond to the following diagram. The following circuit has a problem. Switch #2 is able to control lamp #2, but lamp #1 never comes on no matter what is done with switch #1:      Identify which of the following hypothetical faults could account for this problem, and which could not account for the problem. In other words, which of these faults are possible, and which are not possible, given the symptoms exhibited by the circuit? Consider each of these hypothetical faults one at a time (no multiple, simultaneous faults):    g)  Switch #1 failed shorted

    • Possible

    • NOT Possible

    Correct Answer
    A. NOT Possible
    Explanation
    If switch #1 failed shorted, it would mean that there is a direct connection between the two terminals of the switch, causing a short circuit. In this case, lamp #1 would always be on and not affected by the state of switch #2. However, the problem described in the question states that lamp #1 never comes on, regardless of the position of switch #1. Therefore, it is not possible for switch #1 to have failed shorted in this scenario.

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Quiz Review Timeline (Updated): Feb 23, 2024 +

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  • Current Version
  • Feb 23, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 28, 2010
    Quiz Created by
    EnlightenContrac

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