Test Your Knowledge About Circuit Components! Hardest Trivia Quiz

100 Questions | Total Attempts: 39

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Test Your Knowledge About Circuit Components! Hardest Trivia 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!


Questions and Answers
  • 1. 
    In general we expect a circuit composed of common emitter NPN audio transistor amplifier stages to have _______ .
    • A. 

      Positive ground

    • B. 

      Negative ground

    • C. 

      Positive-negative ground

    • D. 

      None of the above

  • 2. 
    Which statement is true?
    • A. 

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

    • B. 

      The terminals of the battery can be switched

    • C. 

      A car battery can be charged once

    • D. 

      The voltage of a battery can be adjusted by short circuit

  • 3. 
    The TRIAC (Triode for Alternating Current) is virtually _______.
    • A. 

      Two diodes

    • B. 

      Two resistors in parallel

    • C. 

      Two positive wires in series

    • D. 

      Two SCRs (silicon controlled rectifiers) back to back

  • 4. 
    Although made obsolete with the invention of the diac, what non-solid state device is a good component to use in triggering SCRs (silicon controlled rectifier) and TRIACs?
    • A. 

      LED lamp

    • B. 

      Capacitors

    • C. 

      Neon lamp

    • D. 

      Crystal Transmitter

  • 5. 
    The closest semiconductor "equivalent" to a vacuum tube triode is ________.
    • A. 

      A field effect transistor

    • B. 

      Vacuum tubes

    • C. 

      Solid-state IC

    • D. 

      Capacitors

  • 6. 
    An important figure of merit for power amplifiers is its gain. A transistor will have its Beta while a triode will have its _______.
    • A. 

      Ce

    • B. 

      Au

    • C. 

      Te

    • D. 

      Mu

  • 7. 
    The important feature of an NPN common collector transistor is ______.
    • A. 

      Low transmit

    • B. 

      High input impedance

    • C. 

      High resistance

    • D. 

      All of the above

  • 8. 
    In order to emit light, an L.E.D (light emitting diode) must be _______.
    • A. 

      Forward biased

    • B. 

      Reverse biased

    • C. 

      Abstract cabrillo network biased

    • D. 

      No bias

  • 9. 
    The zener diode serves as a good simple voltage reference because it maintains a relatively constant voltage across it when _______.
    • A. 

      Forward biased

    • B. 

      No bias

    • C. 

      Reverse biased

    • D. 

      With bias

  • 10. 
    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.
    • A. 

      Parallel to

    • B. 

      Parallel there

    • C. 

      Series to

    • D. 

      No parallel

  • 11. 
    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 ______.
    • A. 

      Germanium is good for radio

    • B. 

      Silicon diodes are worst

    • C. 

      There is no filter if silicon diodes is used

    • D. 

      They generally have a higher barrier potential

  • 12. 
    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 _______.
    • A. 

      Bridge series output

    • B. 

      Diode transformer

    • C. 

      Bridge configuration

    • D. 

      A and B

  • 13. 
    What is a two terminal device that conducts current easier in only one direction?
    • A. 

      Diode

    • B. 

      Resistor

    • C. 

      Capacitor

    • D. 

      IC

  • 14. 
    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?
    • A. 

      Reverse bias

    • B. 

      Abstract bias

    • C. 

      No bias

    • D. 

      Forward bias

  • 15. 
    • A. 

      Germanium diode

    • B. 

      Silicon diode

    • C. 

      Rectifier diode

    • D. 

      Plastic diode

  • 16. 
    • A. 

      Signal rectifier

    • B. 

      Signal Crystal Diode

    • C. 

      Plastic resistor

    • D. 

      Germanium IC

  • 17. 
    When two or more diodes are connected in parallel to increase current handling capacity, what is the purpose of the resistor connected in series with each diode?
    • A. 

      To increase transmitter power

    • B. 

      To gain signal attentuation

    • C. 

      To improve and widen the receive capability of the transmitter

    • D. 

      To ensure that one diode doesn't carry most of the current

  • 18. 
    • A. 

      CFL

    • B. 

      LED

    • C. 

      ITU

    • D. 

      NTC

  • 19. 
    Like a safety pin on a grenade, what device should always be shunted to a large high voltage electrolytic capacitor when handled by personnel in repairing equipment which has been energized?
    • A. 

      Resistor

    • B. 

      Capacitor

    • C. 

      Diode

    • D. 

      Antenna filter

  • 20. 
    • A. 

      It will explode like a grenade

    • B. 

      Smoke will come out of the resistor

    • C. 

      The transmitter will be damaged

    • D. 

      It will change depending on the resistor's temperature coefficient

  • 21. 
    Which of the following is a reason not to use wire-wound resistors in an RF circuit?
    • A. 

      The circuit will be damage

    • B. 

      The resistor's inductance could make circuit performance unpredictable

    • C. 

      Stray RF waves will be produced

    • D. 

      None of the above

  • 22. 
    Which of the following describes a thermistor?
    • A. 

      A device having a specific change in resistance with temperature variations

    • B. 

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

    • C. 

      A resistor that will change cold to hot temperature

    • D. 

      A device is used to control temperature in a room

  • 23. 
    • A. 

      Potentiometer

    • B. 

      Adjust-o-meter

    • C. 

      Volume meter

    • D. 

      Wattmeter

  • 24. 
    What is an electronic component that resist the flow of current in a circuit used to provide bias or voltage drop?
    • A. 

      Thermistor

    • B. 

      Capacitor

    • C. 

      Resistor

    • D. 

      Capacitive Resistor

  • 25. 
    Which of the following components should be added to an existing resistor to increase the resistance?
    • A. 

      A resistor in series

    • B. 

      A resistor in parallel

    • C. 

      A capacitor in series; a resistor is tapped

    • D. 

      A capacitor in parallel with a resistor tapped

  • 26. 
    In electronics components, capacitors and inductors have reactance. Capacitors do not like a sudden change in _______.
    • A. 

      Reactive voltage

    • B. 

      Suppressive voltage

    • C. 

      Capacitive voltage

    • D. 

      Applied voltage

  • 27. 
    Large electrolytic DC capacitors have to be wired in circuit observing the proper polarity because a wrong polarity wiring may result in _______.
    • A. 

      Production of gases in the electrolyte which can cause an explosion

    • B. 

      The capacitor will increase in size

    • C. 

      The voltage will be different

    • D. 

      The resistance will be increased in the circuit

  • 28. 
    The capacitors with the highest voltage ratings for use with high power tuned circuit of a legal limit tube RF amplifier will have a dielectric of ________.
    • A. 

      A hundred

    • B. 

      1000uf resistor

    • C. 

      Thermistor

    • D. 

      Vacuum

  • 29. 
    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.
    • A. 

      Plastic electric sheet

    • B. 

      Resistor

    • C. 

      Capacitor

    • D. 

      Electrical insulator

  • 30. 
    What capacitors are either electrolytic or tantalum type which are used like battery, i.e, with reference to polarity of terminals?
    • A. 

      Electirized

    • B. 

      Polarized

    • C. 

      Tantalized

    • D. 

      Resistive

  • 31. 
    • A. 

      Fixed non-polarized

    • B. 

      Fixed polarized

    • C. 

      Portable non-polarized

    • D. 

      Resistive polarized

  • 32. 
    Which of the following is an important characteristic for capacitors used to filter the DC output of a switching power supply?
    • A. 

      High equivalent series resistance

    • B. 

      Low equivalent parallel capacitance

    • C. 

      Low equivalent series resistance

    • D. 

      High filtering resistance

  • 33. 
    Which of the following types of capacitors are often used in power supply circuits to filter the rectified AC?
    • A. 

      Parasitic

    • B. 

      Resistive

    • C. 

      Negative

    • D. 

      Electrolytic

  • 34. 
    Which of the following is an advantage of ceramic capacitors as compared to other types of capacitors?
    • A. 

      Good quality

    • B. 

      Comparatively low cost

    • C. 

      Good capacitance at high cost

    • D. 

      A and B

  • 35. 
    Which of the following is an advantage of an electrolytic capacitor?
    • A. 

      Comparatively low cost

    • B. 

      Good quality and high cost

    • C. 

      High capacitance for given volume

    • D. 

      Nice capacitance and low volume

  • 36. 
    While the turns ratio of a transformer is the same as voltage ratio between a primary and secondary windings, the impedance ratio is _______.
    • A. 

      Double by the turns ratio

    • B. 

      One times five for every turn ratio

    • C. 

      Three times for every turns

    • D. 

      The square of the turns ratio

  • 37. 
    • A. 

      Coil

    • B. 

      Conductive metal

    • C. 

      Aluminum

    • D. 

      Copper plated wire

  • 38. 
    • A. 

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

    • B. 

      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

    • C. 

      It will improve the inductance and transmit power

    • D. 

      A and C

  • 39. 
    • A. 

      At right angles

    • B. 

      Left and right angles

    • C. 

      No angle

    • D. 

      Left angles

  • 40. 
    • A. 

      To maximize the coupling between inductors

    • B. 

      To improve the resistance of the resistors, thus improved inductance

    • C. 

      A and B

    • D. 

      To reduce unwanted coupling between circuits

  • 41. 
    • A. 

      Transformer

    • B. 

      Power supply

    • C. 

      Power generator

    • D. 

      Circuit breaker

  • 42. 
    Which part of a transformer is normally connected to the incoming source of energy?
    • A. 

      The secondary

    • B. 

      The primary

    • C. 

      The coil

    • D. 

      The source

  • 43. 
    • A. 

      So the source can deliver maximum power to the load

    • B. 

      To improve transmit range

    • C. 

      To have good impedance

    • D. 

      All of the above

  • 44. 
    When they were first developed, the chief advantage of CMOS digital circuits over the standard 7400 TTL series digital circuits is ________.
    • A. 

      Low cost and efficiency

    • B. 

      Good quality circuits

    • C. 

      Its lower power consumption

    • D. 

      To promote digital circuits

  • 45. 
    All quartz crystals used in communications, rely on utilizing the ________.
    • A. 

      Crystalline effect

    • B. 

      Dielectric effect

    • C. 

      Quartz effect

    • D. 

      Piezoelectric effect

  • 46. 
    Which of these works on the same principle as a CFL (compact flourescent lamp)?
    • A. 

      Neon lamp

    • B. 

      Led lamp

    • C. 

      Glass lighting tube

    • D. 

      Vacuum tubes

  • 47. 
    The very popular SANWA 360TR analog multimeter and its various clones utilizes the D'Arsonval-Weston meter movement which is basically ________.
    • A. 

      Moving coil system

    • B. 

      Good analog readout

    • C. 

      Can be also used as swr meter

    • D. 

      All of the above

  • 48. 
    LCD (liquid crsytal display) digital multimeters are fast replacing D'Arsonval Weston analog meter, LCDs feature a sealed glass panel containing a "liquid crystal". The molecules of the liquid crystal are made to twist so that they can channel light between two polarizing plastic sheets by subjecting them to ______.
    • A. 

      Molecule movement

    • B. 

      An electric field

    • C. 

      Clear lcd readout

    • D. 

      A and C

  • 49. 
    Given a low power output transistor stage having a collector impedance of 1250 ohms, what will be the best transformer turns ratio to use to couple it to a 50-ohm antenna?
    • A. 

      12:1

    • B. 

      10:12

    • C. 

      5:1

    • D. 

      1:5

  • 50. 
    The simple and lowly neon lamp technology has enjoyed a revival in recent years with the invention of ______.
    • A. 

      Plasma television

    • B. 

      Flat screen television

    • C. 

      CFL lamp

    • D. 

      Neon lamp

  • 51. 
    A CMOS logic circuit will generally have a fan-out of ______.
    • A. 

      Lower than 7400 TTL

    • B. 

      Higher than a standard 7400 TTL

    • C. 

      Higher than 25000 TTL

    • D. 

      Exactly 15520 TTL

  • 52. 
    Although phase locked loop (PLL) oscillator is very popular, for critical applications a simple crystal oscillator will outperform it because of _______.
    • A. 

      Higher noise phase

    • B. 

      Lower oscillation

    • C. 

      Higher oscillator

    • D. 

      Lower phase noise

  • 53. 
    • A. 

      A connector for the battery

    • B. 

      Connector for radio to computer control

    • C. 

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

    • D. 

      All of the above

  • 54. 
    Which of these connector types is commonly used for audio signals in Amateur Radio stations?
    • A. 

      RCA Phono

    • B. 

      CRA Phone

    • C. 

      Telephone Connector

    • D. 

      DIN type connector

  • 55. 
    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?
    • A. 

      Quartz

    • B. 

      Crystal

    • C. 

      Gear

    • D. 

      Plastic

  • 56. 
    Which of the following connectors would be a good choice for a serial data port?
    • A. 

      DE-9

    • B. 

      CR-10

    • C. 

      SES-9

    • D. 

      NSS-11

  • 57. 
    Which of the following is a characteristic of a liquid crystal display?
    • A. 

      It produces ambient display

    • B. 

      It produces good output and can be inverted

    • C. 

      It gives charge to your circuit

    • D. 

      It requires ambient or back lighting

  • 58. 
    • A. 

      High power consumption

    • B. 

      Low power consumption

    • C. 

      Energy Saver

    • D. 

      Green energy compliant

  • 59. 
    • A. 

      Random Omnipotent Memory

    • B. 

      Read Only Memory

    • C. 

      Resistive Oscillating Memory

    • D. 

      Random Only Memory

  • 60. 
    • A. 

      The stored information is maintained even if power is removed

    • B. 

      The information is removed even if the power is on

    • C. 

      The information is removed if the circuit will be turned off

    • D. 

      Memory is stored in a physical disk

  • 61. 
    • A. 

      Capacitor

    • B. 

      Lightning Arrester

    • C. 

      Fuse

    • D. 

      Surge Protector

  • 62. 
    • A. 

      Breadboard

    • B. 

      Modules

    • C. 

      Capacitive inductor

    • D. 

      Integrated Circuit (IC)

  • 63. 
    • A. 

      High discharge current

    • B. 

      Low power voltage

    • C. 

      Surge protected

    • D. 

      Low cost

  • 64. 
    • A. 

      Headphones

    • B. 

      Oscillator

    • C. 

      Loudspeaker

    • D. 

      Crystal radio

  • 65. 
    • A. 

      SWR power meter

    • B. 

      Power meter

    • C. 

      Voltmeter

    • D. 

      Coilmeter

  • 66. 
    • A. 

      Ammeter

    • B. 

      Coilmeter

    • C. 

      Voltmeter

    • D. 

      Power meter

  • 67. 
    • A. 

      Synthesizer

    • B. 

      Crystal filter

    • C. 

      Keyer

    • D. 

      Microphone

  • 68. 
    • A. 

      Wheel

    • B. 

      Relay

    • C. 

      Switch

    • D. 

      Coil

  • 69. 
    Which of the following solid state devices is most like a vacuum tube in its general operating characteristics?
    • A. 

      A Field Effect Transistor

    • B. 

      A crystal radio

    • C. 

      Loudspeaker

    • D. 

      Mixer

  • 70. 
    • A. 

      To limit to a specific band only

    • B. 

      To maximize the power and gain of the antenna

    • C. 

      To permit multiband operation

    • D. 

      To make your antenna look cool

  • 71. 
    • A. 

      Narrows the main lobe in elevation

    • B. 

      Makes the gain more higher for more received signals

    • C. 

      To balance the mast

    • D. 

      To maximize the transmit power of the transmitter

  • 72. 
    Which of the following is an advantage of a log periodic antenna?
    • A. 

      Narrows the main lobe in elevation

    • B. 

      Wide bandwidth

    • C. 

      Good transmit

    • D. 

      1:1 SWR

  • 73. 
    Which of the following describes a log periodic antenna?
    • A. 

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

    • B. 

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

    • C. 

      It looks like an homebrew antenna

    • D. 

      It is for expert amateurs use only

  • 74. 
    • A. 

      High gain antenna. Too much stray RF if used for transmit

    • B. 

      It will jam cellphone signals and your neighbours TV

    • C. 

      A and B

    • D. 

      It has high losses compared to other types of antennas

  • 75. 
    Which of the following is an application for a Beverage antenna?
    • A. 

      For All band transmission without using a tuner

    • B. 

      Can be used in high bands

    • C. 

      Can be used for transmit in the low HF bands

    • D. 

      Directional receiving for low HF bands

  • 76. 
    Which of the following describes a Beverage antenna?
    • A. 

      Looks like a beverage can

    • B. 

      A very long and low directional receiving antenna

    • C. 

      A modified yagi

    • D. 

      A horizontal high gain antenna

  • 77. 
    Which of the following is a disadvantage of multiband antennas?
    • A. 

      They have poor harmonic rejection

    • B. 

      High gain on some bands, losses on other bands

    • C. 

      It is needed to adjust when changing in another band

    • D. 

      All of the above

  • 78. 
    Approximately how long is each side of a quad antenna driven element?
    • A. 

      1/4 wavelength

    • B. 

      1/2 wavelength

    • C. 

      1 wavelength

    • D. 

      1/8 wavelength

  • 79. 
    • A. 

      Half of the gain

    • B. 

      No gain

    • C. 

      About the same

    • D. 

      More gain than the other

  • 80. 
    Approximately how long is each side of a quad antenna reflector element?
    • A. 

      1/2 wavelength

    • B. 

      Slightly more than 1/4 wavelength

    • C. 

      5 inches

    • D. 

      1/8 wavelength

  • 81. 
    • A. 

      Half of the gain

    • B. 

      No gain

    • C. 

      Double the gain

    • D. 

      About the same

  • 82. 
    Which of the following would increase the bandwidth of a Yagi antenna?
    • A. 

      Larger diameter elements

    • B. 

      Smaller diameter elements

    • C. 

      Add more elements

    • D. 

      All of the above

  • 83. 
    • A. 

      1/2 wavelength

    • B. 

      1/8 wavelength

    • C. 

      1/4 wavelength

    • D. 

      3/4 wavelength

  • 84. 
    Which statement about a three-element, single-band Yagi antenna is true?
    • A. 

      The elements are larger for every element added to the director

    • B. 

      The director is normally the shortest parasitic element

    • C. 

      The director is only the radiating element in the antenna

    • D. 

      All of the above

  • 85. 
    Which statement about a three-element, single-band Yagi antenna is true?
    • A. 

      The director is only the radiating element in the antenna

    • B. 

      The director is normally the longest parasitic element

    • C. 

      The reflector is normally the longest parasitic element

    • D. 

      All of the above

  • 86. 
    • A. 

      SWR is 1:1

    • B. 

      Gain decreases

    • C. 

      Gain increases

    • D. 

      Loss of transmission

  • 87. 
    Which of the following is a reason why a Yagi antenna is often used for radio communications on the 20 meter band?
    • A. 

      It has 9.7db gain, it is good for ragchew in the band

    • B. 

      It helps reduce interference from other stations to the side or behind the antenna

    • C. 

      It has perfect SWR

    • D. 

      It has maximized power in transmission

  • 88. 
    • A. 

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

    • B. 

      Good SWR

    • C. 

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

    • D. 

      All of the above

  • 89. 
    • A. 

      The direction of maximum radiated field strength from the antenna

    • B. 

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

    • C. 

      It helps reduce interference from other stations to the side or behind the antenna

    • D. 

      None of the above

  • 90. 
    • A. 

      3.5 dBi

    • B. 

      9.7 dBi

    • C. 

      15 dBi

    • D. 

      10 dBi

  • 91. 
    Which of the following is a Yagi antenna design variable that could be adjusted to optimize forward gain, front-to-back ratio, or SWR bandwidth?
    • A. 

      The physical length of the boom

    • B. 

      The number of elements on the boom

    • C. 

      The spacing of each element along the boom

    • D. 

      All of the above

  • 92. 
    • A. 

      They bring the feed-point impedance closer to 50 ohms

    • B. 

      They bring more gain to the antenna

    • C. 

      Block stray RF from the transmitter

    • D. 

      Match the impedance to the transmitter and antenna

  • 93. 
    In what values are RF feed line losses usually expressed?
    • A. 

      Ft per 1m

    • B. 

      DB per 100 ft

    • C. 

      DB per 1m

    • D. 

      DB per 10m

  • 94. 
    • A. 

      Create a (9:1) Bal-Un

    • B. 

      Put a counterpoise on the antenna

    • C. 

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

    • D. 

      Check if the antenna has good SWR

  • 95. 
    In radio parlance a "balun transformer" is ________.
    • A. 

      Balanced line to unbalanced line transformer

    • B. 

      Balanced line transmitter

    • C. 

      Unbalanced line transformer

    • D. 

      Unbalance line to balance line transmitter

  • 96. 
    • A. 

      It decreases

    • B. 

      It increases

    • C. 

      No change

    • D. 

      Stays the same

  • 97. 
    • A. 

      150 ohms

    • B. 

      400 ohms

    • C. 

      200 ohms

    • D. 

      300 ohms

  • 98. 
    Which of the following describes a type-N connector?
    • A. 

      A moisture-resistant RF connector useful to 10 GHz

    • B. 

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

    • C. 

      It is a multi-adaptor used in different scenarios

    • D. 

      A and C

  • 99. 
    • A. 

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

    • B. 

      A small threaded connector suitable for signals up to several GHz

    • C. 

      A moisture-resistant RF connector useful to 10 GHz

    • D. 

      A connector that is useful for 2m and 70cm

  • 100. 
    If propagation changes during your contact and you notice increasing interference from other activity on the same frequency, what should you do?
    • A. 

      As a common courtesy, move your contact to another frequency

    • B. 

      Stay on the frequency, request the other activity to QSY to another frequency

    • C. 

      Do nothing

    • D. 

      Adjust your transmit power and stay on the frequency