Ect001

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Ect001 - Quiz

Priority Level: High (ECE & ECT)


Questions and Answers
  • 1. 

    Which of the following measurements are commonly made using a multimeter?

    • A.

      SWR and RF power

    • B.

      Signal strength and noise

    • C.

      Impedance and reactance

    • D.

      Voltage and resistance

    Correct Answer
    D. Voltage and resistance
    Explanation
    A multimeter is a versatile tool used for measuring electrical quantities. It is commonly used to measure voltage and resistance in various electrical circuits. Voltage refers to the electric potential difference between two points in a circuit, while resistance is the opposition to the flow of electric current. These measurements are fundamental in troubleshooting electrical problems, testing components, and ensuring the proper functioning of circuits. Therefore, voltage and resistance are commonly measured using a multimeter.

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  • 2. 

    How many milliamperes is 1.5 amperes?

    • A.

      1500 milliamperes

    • B.

      15,000 milliamperes

    • C.

      150 milliamperes

    • D.

      15 milliamperes

    Correct Answer
    A. 1500 milliamperes
    Explanation
    1.5 amperes is equal to 1500 milliamperes because there are 1000 milliamperes in one ampere. Therefore, to convert amperes to milliamperes, we multiply the given value by 1000.

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  • 3. 

    Which is equal to 1,500,000 hertz?

    • A.

      1500 kHz

    • B.

      1500 MHz

    • C.

      15 GHz

    • D.

      150 kHz

    Correct Answer
    A. 1500 kHz
    Explanation
    The correct answer is 1500 kHz. The unit "kHz" stands for kilohertz, which is equal to 1000 hertz. Therefore, 1500 kHz is equal to 1500 times 1000 hertz, which is 1,500,000 hertz.

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  • 4. 

    Which is equal to one kilovolt?

    • A.

      One thousand volts

    • B.

      One million volts

    • C.

      One hundred volts

    • D.

      One one-thousandth of a volt

    Correct Answer
    A. One thousand volts
    Explanation
    One kilovolt is equal to one thousand volts.

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  • 5. 

    Which is equal to one microvolt?

    • A.

      One one-millionth of a volt

    • B.

      One million volts

    • C.

      One thousand kilovolts

    • D.

      One one-thousandth of a volt

    Correct Answer
    A. One one-millionth of a volt
    Explanation
    One microvolt is equal to one one-millionth of a volt. This means that it is a very small unit of measurement, as one volt is already a relatively small unit of electrical potential.

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  • 6. 

    Which is equal to 500 milliwatts?

    • A.

      0.5 watts

    • B.

      0.02 watts

    • C.

      5 watts

    • D.

      50 watts

    Correct Answer
    A. 0.5 watts
    Explanation
    The correct answer is 0.5 watts because 500 milliwatts is equal to 0.5 watts. Since there are 1000 milliwatts in a watt, dividing 500 milliwatts by 1000 gives us 0.5 watts.

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  • 7. 

    Which is equal to 3000 milliamperes?

    • A.

      3 amperes

    • B.

      3,000,000 amperes

    • C.

      0.3 amperes

    • D.

      0.003 amperes

    Correct Answer
    A. 3 amperes
    Explanation
    The correct answer is 3 amperes because 1 ampere is equal to 1000 milliamperes. Therefore, 3 amperes is equal to 3000 milliamperes.

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  • 8. 

    Which is equal to 3.525 MHz?

    • A.

      3525 kHz

    • B.

      3,525,000 kHz

    • C.

      35.25 kHz

    • D.

      0.003525 kHz

    Correct Answer
    A. 3525 kHz
    Explanation
    The correct answer is 3525 kHz because kHz stands for kilohertz, which is a unit of frequency equal to 1000 hertz. Therefore, 3525 kHz is equal to 3525 multiplied by 1000 hertz, which is equivalent to 3.525 MHz (megahertz).

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  • 9. 

    Which is equal to 1,000,000 picofarads?

    • A.

      1 microfarad

    • B.

      0.001 microfarads

    • C.

      1000 microfarads

    • D.

      1,000,000,000 microfarads

    Correct Answer
    A. 1 microfarad
    Explanation
    The question asks for the equivalent value of 1,000,000 picofarads. Since 1 microfarad is equal to 1,000,000 picofarads, the answer is 1 microfarad.

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  • 10. 

    Which decibel value most closely represents a power increase from 5 watts to 10 watts?

    • A.

      3 dB

    • B.

      2 dB

    • C.

      5 dB

    • D.

      10 dB

    Correct Answer
    A. 3 dB
    Explanation
    dB = 10log(10/5) = 3

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  • 11. 

    Which decibel value most closely represents a power decrease from 12 watts to 3 watts?

    • A.

      -6 dB

    • B.

      -9 dB

    • C.

      -3 dB

    • D.

      -1 dB

    Correct Answer
    A. -6 dB
    Explanation
    dB = 10log(3/12) = -6

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  • 12. 

    Which decibel value represents a power increase from 20 watts to 200 watts?

    • A.

      10 dB

    • B.

      12 dB

    • C.

      18 dB

    • D.

      28 dB

    Correct Answer
    A. 10 dB
    Explanation
    dB = 10log(200/20) = 10

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  • 13. 

    Which is equal to 28400 kHz?

    • A.

      28.400 MHz

    • B.

      284.00 MHz

    • C.

      2.800 MHz

    • D.

      28.400 kHz

    Correct Answer
    A. 28.400 MHz
    Explanation
    The correct answer is 28.400 MHz because 1 MHz is equal to 1000 kHz. Therefore, to convert kHz to MHz, we divide the value by 1000. In this case, 28400 kHz divided by 1000 equals 28.400 MHz.

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  • 14. 

    Which is equal to 2425 MHz?

    • A.

      2.425 GHz

    • B.

      0.002425 GHz

    • C.

      24.25 GHz

    • D.

      2425 GHz

    Correct Answer
    A. 2.425 GHz
    Explanation
    The correct answer is 2.425 GHz. This is because 1 GHz is equal to 1000 MHz. Therefore, to convert from MHz to GHz, we divide the value in MHz by 1000. In this case, 2425 MHz divided by 1000 equals 2.425 GHz.

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  • 15. 

    What is the abbreviation for megahertz?

    • A.

      MHz

    • B.

      MH

    • C.

      Mh

    • D.

      Mhz

    Correct Answer
    A. MHz
    Explanation
    The correct answer is MHz, which stands for megahertz. Megahertz is a unit of measurement used to quantify the frequency of electromagnetic waves, particularly in relation to computer processing speeds and radio frequencies. The abbreviation "MHz" combines the lowercase "m" for "mega" and the uppercase "Hz" for "hertz."

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  • 16. 

    What is the formula used to calculate electrical power (P) in a DC circuit?

    • A.

      P = I x E

    • B.

      P = E / I

    • C.

      P = E – I

    • D.

      P = I + E

    Correct Answer
    A. P = I x E
    Explanation
    The formula used to calculate electrical power (P) in a DC circuit is P = I x E. This formula states that power is equal to the product of current (I) and voltage (E). In other words, power is determined by multiplying the current flowing through the circuit by the voltage across the circuit.

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  • 17. 

    How much power is delivered by a voltage of 13.8 volts DC and a current of 10 amperes?

    • A.

      138 watts

    • B.

      0.7 watts

    • C.

      23.8 watts

    • D.

      3.8 watts

    Correct Answer
    A. 138 watts
    Explanation
    P = I x E = 10 x 13.8 = 138

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  • 18. 

    How much power is delivered by a voltage of 12 volts DC and a current of 2.5 amperes?

    • A.

      30 watts

    • B.

      4.8 watts

    • C.

      14.5 watts

    • D.

      0.208 watts

    Correct Answer
    A. 30 watts
    Explanation
    P = I x E = 2.5 x 12 = 30

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  • 19. 

    How much current is required to deliver 120 watts at a voltage of 12 volts DC?

    • A.

      10 amperes

    • B.

      0.1 amperes

    • C.

      12 amperes

    • D.

      132 amperes

    Correct Answer
    A. 10 amperes
    Explanation
    I = P/E = 120/12 = 10

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  • 20. 

    What is impedance?

    • A.

      The opposition to AC current flow.

    • B.

      The inverse of resistance.

    • C.

      The Q or Quality Factor of a component.

    • D.

      The power handling capability of a component.

    Correct Answer
    A. The opposition to AC current flow.
    Explanation
    Impedance refers to the opposition that an electrical circuit presents to the flow of alternating current (AC). It is a combination of resistance, inductance, and capacitance in a circuit, and it is measured in ohms. Impedance determines how much current can flow through a circuit at a given voltage. Therefore, the statement "The opposition to AC current flow" accurately defines impedance.

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  • 21. 

    What is the abbreviation for kilohertz?

    • A.

      KHz

    • B.

      KhZ

    • C.

      Khz

    • D.

      KHZ

    Correct Answer
    A. KHz
    Explanation
    The correct abbreviation for kilohertz is kHz. The lowercase "k" represents the prefix kilo-, which means thousand, and the uppercase "Hz" stands for hertz, the unit of frequency. Therefore, kHz is the appropriate abbreviation for kilohertz.

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  • 22. 

    What formula is used to calculate current in a circuit?

    • A.

      I = E / R

    • B.

      I = E x R

    • C.

      I = E + R

    • D.

      I = E - R

    Correct Answer
    A. I = E / R
    Explanation
    The correct formula to calculate current in a circuit is I = E / R. This formula represents Ohm's Law, where I represents the current, E represents the voltage or electromotive force, and R represents the resistance. According to Ohm's Law, the current flowing through a circuit is equal to the voltage divided by the resistance.

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  • 23. 

    What formula is used to calculate voltage in a circuit?

    • A.

      E = I x R

    • B.

      E = I / R

    • C.

      E = I + R

    • D.

      E = I - R

    Correct Answer
    A. E = I x R
    Explanation
    The correct formula to calculate voltage in a circuit is E = I x R, where E represents voltage, I represents current, and R represents resistance. This formula is derived from Ohm's Law, which states that voltage is equal to the product of current and resistance. Therefore, to find the voltage in a circuit, one must multiply the current flowing through the circuit by the resistance it encounters.

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  • 24. 

    What formula is used to calculate resistance in a circuit?

    • A.

      R = E / I

    • B.

      R = E x I

    • C.

      R = E + I

    • D.

      R = E - I

    Correct Answer
    A. R = E / I
    Explanation
    The formula used to calculate resistance in a circuit is R = E / I. This formula represents Ohm's Law, where R is the resistance, E is the voltage or electromotive force, and I is the current flowing through the circuit. By dividing the voltage by the current, we can determine the resistance in the circuit.

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  • 25. 

    What is the resistance of a circuit in which a current of 3 amperes flows when connected to 90 volts?

    • A.

      30 ohms

    • B.

      3 ohms

    • C.

      93 ohms

    • D.

      270 ohms

    Correct Answer
    A. 30 ohms
    Explanation
    R = E/I = 90/3 = 30

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  • 26. 

    What is the resistance of a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?

    • A.

      8 ohms

    • B.

      13.5 ohms

    • C.

      0.125 ohms

    • D.

      18 ohms

    Correct Answer
    A. 8 ohms
    Explanation
    R = E/I = 12/1.5 = 8

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  • 27. 

    What is the resistance of a circuit that draws 4 amperes from a 12-volt source?

    • A.

      3 ohms

    • B.

      16 ohms

    • C.

      48 ohms

    • D.

      8 ohms

    Correct Answer
    A. 3 ohms
    Explanation
    R = E/I = 12/4 = 3

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  • 28. 

    Which of the following battery chemistries is not rechargeable?

    • A.

      Carbon-zinc

    • B.

      Nickel-cadmium

    • C.

      Lead-acid

    • D.

      Lithium-ion

    Correct Answer
    A. Carbon-zinc
    Explanation
    Carbon-zinc batteries are not rechargeable because the chemical reactions that occur during discharge are not easily reversible. Once the reactants are consumed, the battery cannot be recharged by reversing the chemical reactions. In contrast, nickel-cadmium, lead-acid, and lithium-ion batteries are all rechargeable as the chemical reactions can be reversed by applying an external electrical current.

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  • 29. 

    Which is true about forward voltage drop in a diode?

    • A.

      It is lower in some diode types than in others.

    • B.

      It is proportional to peak inverse voltage.

    • C.

      It indicates that the diode is defective.

    • D.

      It has no impact on the voltage delivered to the load.

    Correct Answer
    A. It is lower in some diode types than in others.
    Explanation
    The forward voltage drop in a diode refers to the voltage required for the diode to start conducting current in the forward direction. Different types of diodes have different forward voltage drops due to variations in their materials and construction. Some diodes, such as Schottky diodes, have lower forward voltage drops compared to others like standard silicon diodes. Therefore, it is true that the forward voltage drop is lower in some diode types than in others.

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  • 30. 

    What electronic component allows current to flow in only one direction?

    • A.

      Diode

    • B.

      Driven element

    • C.

      Fuse

    • D.

      Resistor

    Correct Answer
    A. Diode
    Explanation
    A diode is an electronic component that allows current to flow in only one direction. It acts as a one-way valve for electric current, allowing it to pass through in one direction while blocking it in the opposite direction. This property is achieved due to the presence of a PN junction within the diode. When the diode is forward-biased, it allows current to flow freely, but when it is reverse-biased, it blocks the current. This characteristic makes diodes essential in many electronic circuits, such as rectifiers, voltage regulators, and signal demodulators.

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  • 31. 

    Which of these components can be used as an electronic switch?

    • A.

      Transistor

    • B.

      Potentiometer

    • C.

      Thermistor

    • D.

      Varistor

    Correct Answer
    A. Transistor
    Explanation
    A transistor can be used as an electronic switch because it has three terminals: emitter, base, and collector. By applying a small current or voltage to the base terminal, the transistor can control the flow of a larger current between the emitter and collector terminals. This allows the transistor to act as a switch, turning the larger current on or off depending on the input to the base terminal. This property makes transistors widely used in electronic circuits for various applications, including as switches.

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  • 32. 

    Which of the following components can consist of three regions of semiconductor material?

    • A.

      Transistor

    • B.

      Alternator

    • C.

      Triode

    • D.

      Pentagrid converter

    Correct Answer
    A. Transistor
    Explanation
    A transistor is a component that can consist of three regions of semiconductor material. These regions are called the emitter, base, and collector. The transistor is a crucial device in electronics as it can amplify or switch electronic signals and is widely used in various applications such as amplifiers, oscillators, and digital logic circuits. The other options listed, including the alternator, triode, and pentagrid converter, do not typically consist of three regions of semiconductor material.

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  • 33. 

    What type of transistor has a gate, drain, and source?

    • A.

      Field-effect

    • B.

      Varistor

    • C.

      Tesla-effect

    • D.

      Bipolar junction

    Correct Answer
    A. Field-effect
    Explanation
    A field-effect transistor (FET) has a gate, drain, and source. In a FET, the flow of current is controlled by an electric field applied to the gate terminal. The gate terminal acts as a control electrode, allowing the FET to function as a voltage-controlled device. The drain terminal is where the current enters the transistor, while the source terminal is where the current exits. This type of transistor is commonly used in many electronic devices due to its high input impedance and low power consumption.

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  • 34. 

    How is the cathode lead of a semiconductor diode often marked on the package?

    • A.

      With a stripe

    • B.

      With the word "cathode"

    • C.

      With the letter C

    • D.

      With the letter K

    Correct Answer
    A. With a stripe
    Explanation
    The cathode lead of a semiconductor diode is often marked on the package with a stripe. This stripe serves as a visual indicator to easily identify the cathode lead, which is the negative terminal of the diode. By marking the cathode lead with a stripe, it helps in correctly connecting the diode in a circuit, ensuring that it is properly oriented and functioning as intended.

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  • 35. 

    What causes a light-emitting diode (LED) to emit light?

    • A.

      Forward current

    • B.

      Reverse current

    • C.

      Capacitively-coupled RF signal

    • D.

      Inductively-coupled RF signal

    Correct Answer
    A. Forward current
    Explanation
    When a forward current is applied to a light-emitting diode (LED), it causes the diode to emit light. This is because the forward current flows through the diode's p-n junction, causing electrons and holes to recombine and release energy in the form of photons. This process is known as electroluminescence and is the fundamental principle behind the operation of LEDs.

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  • 36. 

    What does the abbreviation FET stand for?

    • A.

      Field Effect Transistor

    • B.

      Free Electron Transmitter

    • C.

      Fast Electron Transistor

    • D.

      Frequency Emission Transmitter

    Correct Answer
    A. Field Effect Transistor
    Explanation
    The abbreviation FET stands for Field Effect Transistor. This is a type of transistor that uses an electric field to control the flow of current. It is commonly used in electronic devices for amplification and switching purposes. The other options, Free Electron Transmitter, Fast Electron Transistor, and Frequency Emission Transmitter, are not correct and do not accurately represent the meaning of FET.

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  • 37. 

    What are the names for the electrodes of a diode?

    • A.

      Anode and cathode

    • B.

      Plus and minus

    • C.

      Source and drain

    • D.

      Gate and base

    Correct Answer
    A. Anode and cathode
    Explanation
    The correct answer is anode and cathode. In a diode, the anode is the positive electrode and the cathode is the negative electrode. The anode is where the current enters the diode, while the cathode is where the current exits. These terms are commonly used in electronic devices to distinguish between the two terminals of a diode.

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  • 38. 

    Which of the following can provide power gain?

    • A.

      Transistor

    • B.

      Transformer

    • C.

      Reactor

    • D.

      Resistor

    Correct Answer
    A. Transistor
    Explanation
    A transistor can provide power gain because it is a three-layer semiconductor device that can amplify electrical signals or switch them on and off. By controlling the input current or voltage, the transistor can regulate the output power to be greater than the input power. This amplification property makes transistors widely used in various electronic devices such as amplifiers, radios, and computers.

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  • 39. 

    What is the term that describes a device's ability to amplify a signal?

    • A.

      Gain

    • B.

      Forward resistance

    • C.

      Forward voltage drop

    • D.

      On resistance

    Correct Answer
    A. Gain
    Explanation
    Gain is the correct answer because it refers to a device's ability to amplify a signal. Gain measures the ratio of output signal amplitude to input signal amplitude, indicating how much the signal is amplified by the device. In other words, gain describes the increase in signal strength provided by the device, making it the appropriate term to describe a device's ability to amplify a signal.

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  • 40. 

    What are the names of the electrodes of a bipolar junction transistor?

    • A.

      Emitter, base, collector

    • B.

      Signal, bias, power

    • C.

      Input, output, supply

    • D.

      Pole one, pole two, output

    Correct Answer
    A. Emitter, base, collector
    Explanation
    The names of the electrodes of a bipolar junction transistor are emitter, base, and collector. These electrodes play crucial roles in the operation of the transistor. The emitter is responsible for emitting majority charge carriers, the base controls the flow of these carriers, and the collector collects the carriers that pass through the base. This configuration allows the transistor to amplify and control electrical signals, making it an essential component in electronic devices.

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  • 41. 

    What is the name of an electrical wiring diagram that uses standard component symbols?

    • A.

      Schematic

    • B.

      Flow chart

    • C.

      Connector pinout

    • D.

      Bill of materials

    Correct Answer
    A. Schematic
    Explanation
    A schematic is the name of an electrical wiring diagram that uses standard component symbols. It is a visual representation of an electrical circuit, showing how the various components are connected and how electricity flows through the system. Schematics are commonly used in electrical engineering and electronics to design, analyze, and troubleshoot circuits. They provide a concise and standardized way to communicate circuit information, making it easier for engineers and technicians to understand and work with electrical systems.

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  • 42. 

    Which of the following is accurately represented in electrical schematics?

    • A.

      Component connections

    • B.

      Wire lengths

    • C.

      Physical appearance of components

    • D.

      All these choices are correct.

    Correct Answer
    A. Component connections
    Explanation
    Electrical schematics accurately represent component connections. Schematics are diagrams that show the interconnections between various electrical components, such as resistors, capacitors, and transistors. They provide a visual representation of how these components are connected to each other and to power sources. Schematics do not typically include information about wire lengths or the physical appearance of components, as these details are not essential for understanding the electrical connections. Therefore, the correct answer is that component connections are accurately represented in electrical schematics.

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  • 43. 

    Which of the following devices or circuits changes an alternating current into a varying direct current signal?

    • A.

      Rectifier

    • B.

      Transformer

    • C.

      Amplifier

    • D.

      Reflector

    Correct Answer
    A. Rectifier
    Explanation
    A rectifier is a device that converts alternating current (AC) into direct current (DC) by allowing current to flow in one direction only. It uses diodes to block the negative portion of the AC waveform, resulting in a varying DC signal. Therefore, a rectifier is the correct device or circuit that changes an alternating current into a varying direct current signal.

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  • 44. 

    What is a relay?

    • A.

      An electrically-controlled switch.

    • B.

      A current controlled amplifier.

    • C.

      An inverting amplifier.

    • D.

      A pass transistor.

    Correct Answer
    A. An electrically-controlled switch.
    Explanation
    A relay is an electrically-controlled switch that uses an electromagnet to open or close a circuit. When an electric current is applied to the relay, it generates a magnetic field that attracts a metal armature, causing it to move and either make or break the circuit. This allows the relay to control the flow of electricity to other devices or components in a circuit. Relays are commonly used in various applications, such as in automotive systems, industrial machinery, and home automation, where they provide a reliable and efficient way to control power circuits.

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  • 45. 

    Which of the following is a reason to use shielded wire?

    • A.

      To prevent coupling of unwanted signals to or from the wire.

    • B.

      To couple the wire to other signals.

    • C.

      To increase the current carrying capability of the wire.

    • D.

      To decrease the resistance of DC power connections.

    Correct Answer
    A. To prevent coupling of unwanted signals to or from the wire.
    Explanation
    Shielded wire is used to prevent the coupling of unwanted signals to or from the wire. This means that the wire is protected from external electromagnetic interference, ensuring that the signals being transmitted through the wire are not distorted or corrupted. Shielded wire is commonly used in applications where signal integrity is critical, such as in audio and video cables, data transmission cables, and sensitive electronic circuits. By preventing the coupling of unwanted signals, shielded wire helps to maintain the quality and reliability of the transmitted signals.

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  • 46. 

    Which of the following displays an electrical quantity as a numeric value?

    • A.

      Meter

    • B.

      Relay

    • C.

      Transistor

    • D.

      Potentiometer

    Correct Answer
    A. Meter
    Explanation
    A meter is a device that is used to measure and display electrical quantities as numeric values. It is commonly used to measure parameters such as voltage, current, resistance, and power. Meters typically have a digital or analog display that shows the measured value in a numeric format, making it easy for users to read and interpret the electrical quantity being measured.

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  • 47. 

    What type of circuit controls the amount of voltage from a power supply?

    • A.

      Regulator

    • B.

      Oscillator

    • C.

      Filter

    • D.

      Phase inverter

    Correct Answer
    A. Regulator
    Explanation
    A regulator is a type of circuit that controls the amount of voltage from a power supply. It ensures that the voltage output remains constant even when there are fluctuations in the input voltage or changes in the load. By regulating the voltage, a regulator protects the electronic components from damage and ensures their proper functioning. It is commonly used in power supplies for various electronic devices to provide a stable and reliable source of voltage.

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  • 48. 

    What component changes 220 V AC power to a lower AC voltage for other uses?

    • A.

      Transformer

    • B.

      Variable capacitor

    • C.

      Transistor

    • D.

      Diode

    Correct Answer
    A. Transformer
    Explanation
    A transformer is a device that is used to change the voltage of an alternating current (AC) power supply. It works on the principle of electromagnetic induction, where two coils of wire are wound around an iron core. The primary coil is connected to the 220 V AC power source, while the secondary coil is connected to the load. By varying the number of turns in each coil, the transformer can step up or step down the voltage. In this case, the transformer is used to lower the 220 V AC power to a lower AC voltage for other uses.

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  • 49. 

    Which of the following is commonly used as a visual indicator?

    • A.

      LED

    • B.

      FET

    • C.

      Zener diode

    • D.

      Bipolar transistor

    Correct Answer
    A. LED
    Explanation
    LED stands for Light Emitting Diode, which is a semiconductor device that emits light when an electric current passes through it. LEDs are commonly used as visual indicators because they are small, energy-efficient, and can emit light in various colors. They are often used in electronic devices, such as smartphones, televisions, and indicators on appliances, to provide visual feedback or display information. LEDs are also used in automotive lighting, street lights, and signage due to their long lifespan and durability.

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  • 50. 

    Which of the following is combined with an inductor to make a resonant circuit?

    • A.

      Capacitor

    • B.

      Potentiometer

    • C.

      Zener diode

    • D.

      Resistor

    Correct Answer
    A. Capacitor
    Explanation
    A resonant circuit is a circuit that exhibits resonance at a specific frequency. In order to create a resonant circuit, an inductor needs to be combined with a capacitor. The inductor provides the inductance, while the capacitor provides the capacitance. Together, they create a circuit that can store and release energy at the resonant frequency, resulting in a strong response to that particular frequency. The other options, such as potentiometer, zener diode, and resistor, do not have the necessary properties to create a resonant circuit when combined with an inductor.

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