Test Your Knowledge About Circuit Components! Hardest Trivia Quiz

Reviewed by Editorial Team
The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.
Learn about Our Editorial Process
| By Brembot
B
Brembot
Community Contributor
Quizzes Created: 1 | Total Attempts: 512
| Attempts: 512
SettingsSettings
Please wait...
  • 1/100 Questions

    What capacitors are either electrolytic or tantalum type which are used like battery, i.e, with reference to polarity of terminals?

    • Electirized
    • Polarized
    • Tantalized
    • Resistive
Please wait...
About This Quiz

If you are looking to test your knowledge about circuit components, you are in luck as the quiz below is perfectly designed for it. An electronic circuit comprises various types of components, and the quiz below is perfect for testing just how much you know about them all. All the best as you tackle it and look up other quizzes like it!

Test Your Knowledge About Circuit Components! Hardest Trivia Quiz - Quiz

Quiz Preview

  • 2. 

    Which of the following describes a log periodic antenna?

    • Length and spacing of the elements increases logarithmically from one end of the boom to the other

    • The length of the elements are the same and it increases the gain

    • It looks like an homebrew antenna

    • It is for expert amateurs use only

    Correct Answer
    A. Length and spacing of the elements increases logarithmically from one end of the boom to the other
    Explanation
    A log periodic antenna is characterized by the length and spacing of its elements increasing logarithmically from one end of the boom to the other. This design allows the antenna to operate over a wide range of frequencies, making it suitable for applications where a broad frequency range is required, such as in television broadcasting or communication systems. The other options provided in the question do not accurately describe a log periodic antenna.

    Rate this question:

  • 3. 

    What is a p-n device which is like a rectifier diode except that it is usually intended to indicate flow of current, as a power ON indicator or condition of a circuit?

    • CFL

    • LED

    • ITU

    • NTC

    Correct Answer
    A. LED
    Explanation
    LED stands for Light Emitting Diode. It is a p-n device that acts as a rectifier diode but is primarily used to indicate the flow of current. LEDs emit light when current passes through them in the forward direction, making them suitable for power ON indicators or indicating the condition of a circuit. CFL, ITU, and NTC are not p-n devices like rectifier diodes or LEDs, and they do not serve the same purpose.

    Rate this question:

  • 4. 

    What is an electrical device consisting of two or more coils coupled together by magnetic induction usually converting 220V AC line to a lower secondary winding voltage for DC power supplies?

    • Transformer

    • Power supply

    • Power generator

    • Circuit breaker

    Correct Answer
    A. Transformer
    Explanation
    A transformer is an electrical device that consists of two or more coils coupled together by magnetic induction. It is commonly used to convert high voltage 220V AC line to a lower secondary winding voltage for DC power supplies. Transformers are essential in electrical systems as they allow for efficient transmission of electrical energy at different voltage levels. They work on the principle of electromagnetic induction, where the primary coil induces a magnetic field in the core, which in turn induces a voltage in the secondary coil. This voltage is then used to power various electrical devices.

    Rate this question:

  • 5. 

    Which part of a transformer is normally connected to the incoming source of energy?

    • The secondary

    • The primary

    • The coil

    • The source

    Correct Answer
    A. The primary
    Explanation
    The primary coil of a transformer is normally connected to the incoming source of energy. The primary coil is responsible for receiving the electrical energy from the source and transferring it to the secondary coil through electromagnetic induction. This allows for the transformation of voltage levels in the transformer.

    Rate this question:

  • 6. 

    What is meant when memory is characterized as "non-volatile"?

    • The stored information is maintained even if power is removed

    • The information is removed even if the power is on

    • The information is removed if the circuit will be turned off

    • Memory is stored in a physical disk

    Correct Answer
    A. The stored information is maintained even if power is removed
    Explanation
    When memory is characterized as "non-volatile," it means that the stored information is maintained even if power is removed. This implies that the memory retains its data even when the device is turned off or experiences a power outage. Non-volatile memory is commonly used in devices such as solid-state drives (SSDs) and flash drives, where data integrity is crucial and needs to be preserved even in the absence of power.

    Rate this question:

  • 7. 

    What is a protective device having a short length of wire that melts when the current that passes through it exceeds a predetermined (rated) value?

    • Capacitor

    • Lightning Arrester

    • Fuse

    • Surge Protector

    Correct Answer
    A. Fuse
    Explanation
    A fuse is a protective device that contains a short length of wire that is designed to melt when the current passing through it exceeds a certain predetermined value. When the wire melts, it breaks the circuit and prevents excessive current from damaging the electrical system or causing a fire. Fuses are commonly used in electrical circuits to protect against overcurrent conditions and ensure the safety of the equipment and the surrounding environment.

    Rate this question:

  • 8. 

    What is a meter used to measure voltage and is connected in parallel to the circuit?

    • SWR power meter

    • Power meter

    • Voltmeter

    • Coilmeter

    Correct Answer
    A. Voltmeter
    Explanation
    A voltmeter is a meter used to measure voltage. It is connected in parallel to the circuit, meaning that it is connected across the component or circuit being measured. This allows the voltmeter to measure the potential difference between two points in the circuit. By connecting in parallel, the voltmeter does not affect the circuit's current flow, ensuring accurate voltage measurements. Therefore, a voltmeter is the correct answer to the question.

    Rate this question:

  • 9. 

    What is an electromechanical device having one or more contacts opened and closed by a magnetic field generated by its own built-in electromagnet that can be activated by an external circuit?

    • Wheel

    • Relay

    • Switch

    • Coil

    Correct Answer
    A. Relay
    Explanation
    A relay is an electromechanical device that uses an electromagnet to open and close one or more contacts. It can be activated by an external circuit, which generates a magnetic field that triggers the electromagnet. This allows the relay to control the flow of electricity in another circuit, making it a useful component in many electrical systems.

    Rate this question:

  • 10. 

    What is a resistor with a continuously adjustable resistance used for volume or brightness control?

    • Potentiometer

    • Adjust-o-meter

    • Volume meter

    • Wattmeter

    Correct Answer
    A. Potentiometer
    Explanation
    A potentiometer is a resistor with a continuously adjustable resistance that is commonly used for volume or brightness control. It allows for precise control over the level of electrical current flowing through a circuit, thereby adjusting the volume or brightness of a device. By adjusting the position of the potentiometer's wiper, the resistance can be increased or decreased, resulting in the desired level of control. This makes potentiometers ideal for applications where variable resistance is required, such as in audio systems or lighting controls.

    Rate this question:

  • 11. 

    Large electrolytic DC capacitors have to be wired in circuit observing the proper polarity because a wrong polarity wiring may result in _______.

    • Production of gases in the electrolyte which can cause an explosion

    • The capacitor will increase in size

    • The voltage will be different

    • The resistance will be increased in the circuit

    Correct Answer
    A. Production of gases in the electrolyte which can cause an explosion
    Explanation
    Large electrolytic DC capacitors have to be wired in circuit observing the proper polarity because a wrong polarity wiring may result in production of gases in the electrolyte which can cause an explosion. This is because electrolytic capacitors have a specific electrolyte inside them that can react with the electrodes when a wrong polarity is applied. This reaction can generate gases, such as hydrogen, which can build up pressure and potentially cause an explosion. Therefore, it is crucial to wire these capacitors correctly to ensure safe operation.

    Rate this question:

  • 12. 

    What device is used in electronic circuits to introduce inductance, frequently found in tuning and filter circuits?

    • Coil

    • Conductive metal

    • Aluminum

    • Copper plated wire

    Correct Answer
    A. Coil
    Explanation
    A coil is a device used in electronic circuits to introduce inductance. It is frequently found in tuning and filter circuits. A coil is typically made of conductive metal, such as copper plated wire, which allows for the flow of electric current and the generation of a magnetic field. The inductance created by the coil helps to regulate the flow of current and can be adjusted to specific frequencies in tuning circuits or used to filter out unwanted frequencies in filter circuits.

    Rate this question:

  • 13. 

    What is a semiconductor device with both the active and passive elements contained in a single package to perform a complete electronic function?

    • Breadboard

    • Modules

    • Capacitive inductor

    • Integrated Circuit (IC)

    Correct Answer
    A. Integrated Circuit (IC)
    Explanation
    An integrated circuit (IC) is a semiconductor device that contains both active and passive elements in a single package to perform a complete electronic function. It is a miniaturized electronic circuit that can consist of transistors, resistors, capacitors, and other components. The integration of these elements onto a single chip allows for compactness, improved performance, and cost-effectiveness. ICs are widely used in various electronic devices, such as computers, smartphones, and televisions, due to their versatility and efficiency.

    Rate this question:

  • 14. 

    What is a meter used to measure current and is connected in series to the circuit?

    • Ammeter

    • Coilmeter

    • Voltmeter

    • Power meter

    Correct Answer
    A. Ammeter
    Explanation
    An ammeter is a meter used to measure current in a circuit. It is connected in series, meaning that it is inserted into the circuit through which the current flows. The ammeter measures the flow of electric current and displays the reading in amperes (A). This allows for accurate monitoring and measurement of current in a circuit.

    Rate this question:

  • 15. 

    What is an electronic device intended to convert sound waves into electrical signals?

    • Synthesizer

    • Crystal filter

    • Keyer

    • Microphone

    Correct Answer
    A. Microphone
    Explanation
    A microphone is an electronic device that converts sound waves into electrical signals. It is designed to capture sound and convert it into an electrical voltage. When sound waves enter the microphone, they cause a diaphragm or other sensing element to vibrate. This vibration is then converted into an electrical signal that can be amplified, recorded, or transmitted. Microphones are commonly used in a variety of applications such as recording studios, live performances, telecommunication devices, and audio systems. They play a crucial role in capturing and reproducing sound accurately.

    Rate this question:

  • 16. 

    What does "front-to-back ratio" mean in reference to a Yagi antenna?

    • It has good transmit in the directors and elements in the antenna

    • Good SWR

    • The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction

    • All of the above

    Correct Answer
    A. The power radiated in the major radiation lobe compared to the power radiated in exactly the opposite direction
    Explanation
    "Front-to-back ratio" refers to the comparison between the power radiated in the major radiation lobe and the power radiated in the exact opposite direction. In other words, it measures the ability of a Yagi antenna to focus and transmit power in the desired direction while minimizing power radiated in the opposite direction. This is an important characteristic as it determines the antenna's ability to reject unwanted signals or interference from behind.

    Rate this question:

  • 17. 

    What must be done to prevent standing waves on an antenna feed line?

    • Create a (9:1) Bal-Un

    • Put a counterpoise on the antenna

    • The antenna feed-point impedance must be matched to the characteristic impedance of the feed line

    • Check if the antenna has good SWR

    Correct Answer
    A. The antenna feed-point impedance must be matched to the characteristic impedance of the feed line
    Explanation
    To prevent standing waves on an antenna feed line, it is necessary to match the antenna feed-point impedance to the characteristic impedance of the feed line. When the impedance is properly matched, the energy transfer between the antenna and the feed line is optimized, minimizing reflections and standing waves. This ensures efficient transmission of signals and prevents signal degradation.

    Rate this question:

  • 18. 

    What is a two terminal device that conducts current easier in only one direction?

    • Diode

    • Resistor

    • Capacitor

    • IC

    Correct Answer
    A. Diode
    Explanation
    A diode is a two-terminal device that conducts current easier in only one direction. It has a p-n junction, which allows current to flow from the anode (positive terminal) to the cathode (negative terminal) when the diode is forward biased. However, when the diode is reverse biased, it blocks the current flow. This property makes diodes useful in rectifying AC to DC, as well as in protecting electronic circuits from reverse current.

    Rate this question:

  • 19. 

    Which of the following is a reason not to use wire-wound resistors in an RF circuit?

    • The circuit will be damage

    • The resistor's inductance could make circuit performance unpredictable

    • Stray RF waves will be produced

    • None of the above

    Correct Answer
    A. The resistor's inductance could make circuit performance unpredictable
    Explanation
    Wire-wound resistors have inherent inductance due to the coiled wire used in their construction. This inductance can interfere with the desired performance of an RF circuit, as it can introduce unwanted impedance and affect the frequency response. Therefore, using wire-wound resistors in an RF circuit can make the circuit's performance unpredictable.

    Rate this question:

  • 20. 

    Which of the following describes a thermistor?

    • A device having a specific change in resistance with temperature variations

    • A device that will release a hot air in the general area of the device

    • A resistor that will change cold to hot temperature

    • A device is used to control temperature in a room

    Correct Answer
    A. A device having a specific change in resistance with temperature variations
    Explanation
    A thermistor is a device that exhibits a specific change in resistance with temperature variations. As the temperature changes, the resistance of a thermistor either increases or decreases in a predictable and specific manner. This property makes thermistors useful for measuring and controlling temperature in various applications, such as in thermostats, temperature sensors, and temperature compensation circuits.

    Rate this question:

  • 21. 

    What is one disadvantage of an incandescent indicator compared to an LED?

    • High power consumption

    • Low power consumption

    • Energy Saver

    • Green energy compliant

    Correct Answer
    A. High power consumption
    Explanation
    An incandescent indicator has a disadvantage of high power consumption compared to an LED. Incandescent indicators use a filament that heats up to produce light, which requires a significant amount of energy. This high power consumption leads to increased electricity usage and higher energy costs. On the other hand, LEDs are known for their low power consumption and energy efficiency, making them a more advantageous choice in terms of energy usage and cost-effectiveness.

    Rate this question:

  • 22. 

    What is meant by the term ROM?

    • Random Omnipotent Memory

    • Read Only Memory

    • Resistive Oscillating Memory

    • Random Only Memory

    Correct Answer
    A. Read Only Memory
    Explanation
    ROM stands for Read Only Memory. It is a type of computer memory that stores data permanently and cannot be modified or erased by normal computer operations. The data stored in ROM is non-volatile, meaning it is retained even when the computer is turned off. ROM is commonly used to store firmware, which contains instructions for the computer's hardware to boot up and perform basic functions. Unlike Random Access Memory (RAM), which is volatile and temporary, ROM provides long-term storage for essential system software and data.

    Rate this question:

  • 23. 

    Which statement is true?

    • When an SCR is triggered at its gate, the SCR keeps on conducting as long as the two other terminals are forward biased.

    • The terminals of the battery can be switched

    • A car battery can be charged once

    • The voltage of a battery can be adjusted by short circuit

    Correct Answer
    A. When an SCR is triggered at its gate, the SCR keeps on conducting as long as the two other terminals are forward biased.
    Explanation
    When an SCR (Silicon Controlled Rectifier) is triggered at its gate, it enters into a conducting state and remains conducting as long as the anode and cathode terminals are forward biased. This means that the voltage across the anode and cathode terminals is in the correct polarity for the SCR to continue conducting. If the voltage across these terminals becomes reverse biased or falls below a certain threshold, the SCR will stop conducting. Therefore, the statement "When an SCR is triggered at its gate, the SCR keeps on conducting as long as the two other terminals are forward biased" is true.

    Rate this question:

  • 24. 

    The 1N34A germanium diode is the component of choice when it comes to signal detection or demodulation of AM signals. Silicon diodes are not used for this because ______.

    • Germanium is good for radio

    • Silicon diodes are worst

    • There is no filter if silicon diodes is used

    • They generally have a higher barrier potential

    Correct Answer
    A. They generally have a higher barrier potential
    Explanation
    Silicon diodes are not used for signal detection or demodulation of AM signals because they generally have a higher barrier potential. The barrier potential is the voltage required to overcome the potential barrier at the junction of a diode. Silicon diodes have a higher barrier potential compared to germanium diodes, which means that a higher voltage is required for them to conduct and allow the signal to be detected or demodulated. Germanium diodes, on the other hand, have a lower barrier potential, making them more suitable for this purpose.

    Rate this question:

  • 25. 

    What is an advantage of using a ferrite core toroidal inductor?

    • The ferrite core will be a filter to block stray RF signals

    • Large values of inductance may be obtained, The magnetic properties of the core may be optimized for a specific range of frequencies, Most of the magnetic field is contained in the core

    • It will improve the inductance and transmit power

    • A and C

    Correct Answer
    A. Large values of inductance may be obtained, The magnetic properties of the core may be optimized for a specific range of frequencies, Most of the magnetic field is contained in the core
    Explanation
    Using a ferrite core toroidal inductor has several advantages. Firstly, it allows for large values of inductance to be obtained. This is beneficial in applications where high inductance is required. Secondly, the magnetic properties of the core can be optimized for a specific range of frequencies, allowing for better performance in that frequency range. Lastly, most of the magnetic field generated by the inductor is contained within the core, reducing interference with other components and improving overall efficiency.

    Rate this question:

  • 26. 

    What is the general description of a DIN type connector?

    • A connector for the battery

    • Connector for radio to computer control

    • A family of multiple circuit connectors suitable for audio and control signals

    • All of the above

    Correct Answer
    A. A family of multiple circuit connectors suitable for audio and control signals
    Explanation
    The correct answer is "A family of multiple circuit connectors suitable for audio and control signals." This is because DIN type connectors are commonly used in audio and control applications. They are designed to transmit signals between devices and can handle multiple circuits, making them versatile for various audio and control connections. They are not specifically designed for battery or radio to computer control connections, although they can be used for those purposes as well.

    Rate this question:

  • 27. 

    Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?

    • A Field Effect Transistor

    • A crystal radio

    • Loudspeaker

    • Mixer

    Correct Answer
    A. A Field Effect Transistor
    Explanation
    A Field Effect Transistor (FET) is most like a vacuum tube in its general operating characteristics. Both the vacuum tube and FET are active devices that can amplify signals. They both have a control electrode (grid in vacuum tube, gate in FET) that controls the flow of current through the device. Additionally, both devices can be used as switches, allowing or blocking the flow of current based on the control signal. Therefore, the FET is the most similar to a vacuum tube in terms of its general operating characteristics.

    Rate this question:

  • 28. 

    How does increasing boom length and adding directors affect a Yagi antenna?

    • SWR is 1:1

    • Gain decreases

    • Gain increases

    • Loss of transmission

    Correct Answer
    A. Gain increases
    Explanation
    Increasing the boom length and adding directors to a Yagi antenna increases its gain. The gain of an antenna refers to its ability to focus and direct the signal in a specific direction. By increasing the boom length, which is the main supporting structure of the antenna, and adding directors, which are additional elements that enhance the antenna's directivity, the antenna becomes more efficient at capturing and transmitting signals in the desired direction. As a result, the gain of the antenna increases, allowing for better signal reception and transmission.

    Rate this question:

  • 29. 

    In what values are RF feed line losses usually expressed?

    • Ft per 1m

    • DB per 100 ft

    • DB per 1m

    • DB per 10m

    Correct Answer
    A. DB per 100 ft
    Explanation
    RF feed line losses are usually expressed in dB per 100 ft. This is because dB (decibel) is a logarithmic unit of measurement that compares the power level of a signal to a reference level. In the context of RF feed lines, dB per 100 ft is a common unit to express the amount of signal loss that occurs over a distance of 100 ft. It allows for easy comparison and calculation of signal losses over different lengths of feed lines.

    Rate this question:

  • 30. 

    In general we expect a circuit composed of common emitter NPN audio transistor amplifier stages to have _______ .

    • Positive ground

    • Negative ground

    • Positive-negative ground

    • None of the above

    Correct Answer
    A. Negative ground
    Explanation
    In general, a circuit composed of common emitter NPN audio transistor amplifier stages is expected to have a negative ground. This means that the circuit is referenced to a negative voltage potential, with the ground symbol representing the common reference point for all components.

    Rate this question:

  • 31. 

    Approximately how long is each side of a quad antenna driven element?

    • 1/4 wavelength

    • 1/2 wavelength

    • 1 wavelength

    • 1/8 wavelength

    Correct Answer
    A. 1/4 wavelength
    Explanation
    The correct answer is 1/4 wavelength. In a quad antenna, the driven element is a loop that is a quarter wavelength long on each side. This length is important for achieving resonance and efficient transmission and reception of radio signals.

    Rate this question:

  • 32. 

    Large capacitors are used in Power supplies to smoothen the voltage output of bridge diode rectifiers by being wired _______ an inductor at the output of the rectifier.

    • Parallel to

    • Parallel there

    • Series to

    • No parallel

    Correct Answer
    A. Parallel to
    Explanation
    Large capacitors are used in power supplies to smoothen the voltage output of bridge diode rectifiers by being wired in parallel to an inductor at the output of the rectifier. This configuration allows the capacitor to store electrical energy during the peaks of the rectified AC waveform and release it during the troughs, effectively reducing voltage ripple and providing a more stable DC output. By being connected in parallel to the inductor, the capacitor and inductor work together to filter out any fluctuations in the voltage, resulting in a smoother output.

    Rate this question:

  • 33. 

    When the polarity of voltage is incorrect, the diode acts as a very high resistance that does not allow conduction and is said to be in what condition?

    • Reverse bias

    • Abstract bias

    • No bias

    • Forward bias

    Correct Answer
    A. Reverse bias
    Explanation
    When the polarity of voltage is incorrect, the diode is said to be in reverse bias. In this condition, the diode acts as a very high resistance and does not allow conduction. Reverse bias occurs when the positive terminal of the power supply is connected to the cathode of the diode and the negative terminal is connected to the anode. This causes the diode to block the flow of current and prevents conduction.

    Rate this question:

  • 34. 

    What is the type of diode usually made of silicon material and intended for rectification purposes, i.e., converting an alternating current to direct current in DC power supplies?

    • Germanium diode

    • Silicon diode

    • Rectifier diode

    • Plastic diode

    Correct Answer
    A. Rectifier diode
    Explanation
    A rectifier diode is a type of diode that is made of silicon material and is specifically designed for rectification purposes. It is used to convert an alternating current (AC) to direct current (DC) in DC power supplies. Rectifier diodes have a high current carrying capacity and low forward voltage drop, making them ideal for rectification applications. Germanium diodes, on the other hand, are not commonly used for rectification and have different characteristics compared to silicon diodes. Plastic diodes are not commonly used in rectification applications either. Therefore, the correct answer is rectifier diode.

    Rate this question:

  • 35. 

    What is an electronic component that resist the flow of current in a circuit used to provide bias or voltage drop?

    • Thermistor

    • Capacitor

    • Resistor

    • Capacitive Resistor

    Correct Answer
    A. Resistor
    Explanation
    A resistor is an electronic component that resists the flow of current in a circuit. It is commonly used to provide bias or voltage drop in a circuit. A resistor is designed to have a specific resistance value, which determines the amount of current that can pass through it. By controlling the resistance, a resistor can be used to regulate the flow of current and provide the desired voltage drop in a circuit.

    Rate this question:

  • 36. 

    What electronic device that is made up of two conductive surfaces that are separated from each other by a dielectric? This dielectric can be any insulating material such as paper, oil, plastic, mica, glass or even air.

    • Plastic electric sheet

    • Resistor

    • Capacitor

    • Electrical insulator

    Correct Answer
    A. Capacitor
    Explanation
    A capacitor is an electronic device that consists of two conductive surfaces, known as plates, which are separated by a dielectric material. This dielectric can be any insulating material, such as paper, oil, plastic, mica, glass, or even air. When a voltage is applied across the plates, it causes an electric field to form in the dielectric, storing electrical energy. Capacitors are commonly used in electronic circuits for various purposes, such as energy storage, filtering, and coupling. They are essential components in many electronic devices, including computers, televisions, and smartphones.

    Rate this question:

  • 37. 

    While the turns ratio of a transformer is the same as voltage ratio between a primary and secondary windings, the impedance ratio is _______.

    • Double by the turns ratio

    • One times five for every turn ratio

    • Three times for every turns

    • The square of the turns ratio

    Correct Answer
    A. The square of the turns ratio
    Explanation
    The impedance ratio of a transformer is equal to the square of the turns ratio. This means that if the turns ratio is doubled, the impedance ratio will be quadrupled. Similarly, if the turns ratio is tripled, the impedance ratio will be nine times. The square of the turns ratio is used to calculate the impedance ratio because impedance is proportional to the square of the number of turns in a coil.

    Rate this question:

  • 38. 

    The simple and lowly neon lamp technology has enjoyed a revival in recent years with the invention of ______.

    • Plasma television

    • Flat screen television

    • CFL lamp

    • Neon lamp

    Correct Answer
    A. Plasma television
    Explanation
    The revival of the simple and lowly neon lamp technology can be attributed to the invention of plasma television. Plasma televisions use neon gas to create the images on the screen, which has led to a renewed interest in neon lamp technology.

    Rate this question:

  • 39. 

    What is made of a wafer of natural quartz or any piezo-electric material having a definite thickness that makes it vibrate at a predetermined frequency when connected in a circuit and used in oscillator circuits and clocks?

    • Quartz

    • Crystal

    • Gear

    • Plastic

    Correct Answer
    A. Crystal
    Explanation
    A crystal is made of a wafer of natural quartz or any piezo-electric material with a specific thickness that allows it to vibrate at a predetermined frequency when connected in a circuit. Crystals are commonly used in oscillator circuits and clocks to provide accurate and stable timing signals. They have the property of piezoelectricity, which means they can generate an electric charge when subjected to mechanical stress, and vice versa. This property allows crystals to oscillate at a precise frequency and make them ideal for timekeeping applications.

    Rate this question:

  • 40. 

    What is a type SMA connector?

    • A RF connector that is only available to a certain type of transmitter

    • A small threaded connector suitable for signals up to several GHz

    • A moisture-resistant RF connector useful to 10 GHz

    • A connector that is useful for 2m and 70cm

    Correct Answer
    A. A small threaded connector suitable for signals up to several GHz
    Explanation
    A type SMA connector is a small threaded connector that is suitable for signals up to several GHz. It is commonly used in RF applications and provides a secure connection for transmitting high-frequency signals. The threaded design ensures a tight and reliable connection, making it suitable for use in various electronic devices and systems that require efficient signal transmission.

    Rate this question:

  • 41. 

    The TRIAC (Triode for Alternating Current) is virtually _______.

    • Two diodes

    • Two resistors in parallel

    • Two positive wires in series

    • Two SCRs (silicon controlled rectifiers) back to back

    Correct Answer
    A. Two SCRs (silicon controlled rectifiers) back to back
    Explanation
    The TRIAC is virtually two SCRs (silicon controlled rectifiers) back to back. This means that it can control the flow of current in both directions, allowing it to work with alternating current. This characteristic makes the TRIAC a useful component in applications such as dimmer switches, motor speed control, and AC power control.

    Rate this question:

  • 42. 

    All quartz crystals used in communications, rely on utilizing the ________.

    • Crystalline effect

    • Dielectric effect

    • Quartz effect

    • Piezoelectric effect

    Correct Answer
    A. Piezoelectric effect
    Explanation
    Quartz crystals used in communications rely on the piezoelectric effect. The piezoelectric effect is the ability of certain materials, like quartz, to generate an electric charge when mechanical stress is applied to them. In the case of quartz crystals, when an electric field is applied to the crystal, it vibrates at a specific frequency. This vibration is used to generate a stable and precise frequency for communication devices. Therefore, the piezoelectric effect is essential for the functioning of quartz crystals in communication technology.

    Rate this question:

  • 43. 

    What is a device used to convert electrical energy into sound?

    • Headphones

    • Oscillator

    • Loudspeaker

    • Crystal radio

    Correct Answer
    A. Loudspeaker
    Explanation
    A loudspeaker is a device that converts electrical energy into sound. It consists of a diaphragm or cone that vibrates when an electrical signal is passed through it. These vibrations create sound waves that can be heard by the human ear. Loudspeakers are commonly used in audio systems, televisions, and public address systems to amplify and reproduce sound accurately and efficiently.

    Rate this question:

  • 44. 

    Which of the following describes a Beverage antenna?

    • Looks like a beverage can

    • A very long and low directional receiving antenna

    • A modified yagi

    • A horizontal high gain antenna

    Correct Answer
    A. A very long and low directional receiving antenna
    Explanation
    A Beverage antenna is a type of antenna that is very long and low, typically consisting of a wire stretched out horizontally close to the ground. It is designed to be highly directional and is primarily used for receiving radio signals. The antenna gets its name from its resemblance to a beverage can, but it is not actually shaped like a can. Instead, it is a simple wire antenna that is known for its excellent performance in receiving weak signals.

    Rate this question:

  • 45. 

    A diode rectifier configuration which produces a full wave output and requires no center tap in the transformer secondary winding of a power transformer is _______.

    • Bridge series output

    • Diode transformer

    • Bridge configuration

    • A and B

    Correct Answer
    A. Bridge configuration
    Explanation
    A bridge configuration diode rectifier produces a full wave output and does not require a center tap in the transformer secondary winding. In this configuration, four diodes are arranged in a bridge formation, allowing the current to flow in both directions through the load. This eliminates the need for a center tap in the transformer, making it a more efficient and cost-effective solution for power rectification.

    Rate this question:

  • 46. 

    Which of the following types of capacitors are often used in power supply circuits to filter the rectified AC?

    • Parasitic

    • Resistive

    • Negative

    • Electrolytic

    Correct Answer
    A. Electrolytic
    Explanation
    Electrolytic capacitors are often used in power supply circuits to filter the rectified AC. These capacitors have a high capacitance value and are capable of handling high voltage levels. They are specifically designed for use in power supply applications and are able to withstand the high ripple currents that occur in these circuits. The electrolytic capacitors work by storing and releasing electrical energy, effectively smoothing out the rectified AC waveform and reducing any unwanted noise or ripple.

    Rate this question:

  • 47. 

    How should the winding axes of solenoid inductors be placed to minimize their mutual inductance?

    • At right angles

    • Left and right angles

    • No angle

    • Left angles

    Correct Answer
    A. At right angles
    Explanation
    The winding axes of solenoid inductors should be placed at right angles to minimize their mutual inductance. This is because when the winding axes are perpendicular to each other, the magnetic fields produced by the currents flowing through the inductors are also perpendicular to each other. As a result, the interaction between the magnetic fields is minimized, reducing the mutual inductance between the inductors.

    Rate this question:

  • 48. 

    When they were first developed, the chief advantage of CMOS digital circuits over the standard 7400 TTL series digital circuits is ________.

    • Low cost and efficiency

    • Good quality circuits

    • Its lower power consumption

    • To promote digital circuits

    Correct Answer
    A. Its lower power consumption
    Explanation
    The chief advantage of CMOS digital circuits over the standard 7400 TTL series digital circuits is their lower power consumption. CMOS circuits use complementary MOSFETs, which consume very little power when not switching states. This makes them more efficient and suitable for battery-powered devices or applications where power consumption is a concern. In contrast, TTL circuits consume more power due to their use of transistors and resistors. Therefore, CMOS circuits offer the advantage of lower power consumption, making them a preferred choice in many applications.

    Rate this question:

  • 49. 

    The very popular SANWA 360TR analog multimeter and its various clones utilizes the D'Arsonval-Weston meter movement which is basically ________.

    • Moving coil system

    • Good analog readout

    • Can be also used as swr meter

    • All of the above

    Correct Answer
    A. Moving coil system
    Explanation
    The correct answer is "moving coil system." The SANWA 360TR analog multimeter and its clones use the D'Arsonval-Weston meter movement, which is a type of moving coil system. This system is commonly used in analog meters to measure current, voltage, and resistance. It consists of a coil that moves in a magnetic field, producing a deflection on a scale to indicate the measurement. This design provides accurate and reliable analog readouts, making it a popular choice for multimeters. Additionally, the D'Arsonval-Weston meter movement is not specifically designed to be used as an SWR (Standing Wave Ratio) meter, so the statement "can be also used as SWR meter" is incorrect.

    Rate this question:

Quiz Review Timeline (Updated): Mar 20, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 09, 2019
    Quiz Created by
    Brembot

Recent Quizzes

Soldering Success: Surface Mount Devices Quiz Soldering Success: Surface Mount Devices Quiz
PCB Designing Fundamental Quiz PCB Designing Fundamental Quiz
A Fun Quiz on Circuit Calculations and Concepts A Fun Quiz on Circuit Calculations and Concepts
ISRO ELECTRONICS LENGTHY QUIZ 1-26/07/2020 ISRO ELECTRONICS LENGTHY QUIZ 1-26/07/2020
Quiz in Communication system Quiz in Communication system
Quiz On Verilog HDL & Digital Design Quiz On Verilog HDL & Digital Design
Back to Top Back to top
Advertisement
×

Wait!
Here's an interesting quiz for you.

We have other quizzes matching your interest.