ASVAB PRACTICE TEST A

Part 6: Electronics Information (EI)

9 Minutes 20 Questions

  1. Directions: In this section, you will be tested on your knowledge of electronics basics. For each question, select the best answer and mark the corresponding oval on your answer sheet.

  2. Resistance is measured in

    1. amperes
    2. ohms
    3. V
    4. W

  3. Protons have a charge, and neutrons are charged.

    1. positive, negatively
    2. positive, neutrally
    3. negative, positively
    4. neutral, negatively

  4. What is the term for a current flowing in a conductor which changes direction (moves back and forth) many times in a second?

    1. alternating current
    2. direct current
    3. electromotive force
    4. variable current

  5. What type of circuit does this symbol represent?

    44156.png
    1. parallel circuit
    2. series circuit
    3. series-parallel circuit
    4. short circuit

  6. In the formula for Ohm’s Law, V = I × R, the I represents

    1. voltage
    2. current
    3. resistance
    4. impedance

  7. The P-type material in a diode is also known as the

    1. electrode
    2. cathode
    3. base
    4. anode

  8. Introducing impurities into the crystal structure of silicon is also known as

    1. tinning
    2. enhancing
    3. processing
    4. doping

  9. Which of the following causes the least resistance to a high frequency alternating current?

    1. capacitor
    2. fixed resistor
    3. variable resistor
    4. inductor

  10. A circuit contains four resistors of 2 Ω, 4 Ω, 6 Ω, and 8 Ω in series. What is their effective resistance?

    1. 2 Ω
    2. 5 Ω
    3. 8 Ω
    4. 20 Ω

  11. All of the following statements about transistors are true EXCEPT

    1. N-type material has free electrons
    2. NPN transistors require a positive voltage at the base to turn them on
    3. the arrow in the transistor symbol is always placed on the collector
    4. P-type material conducts current through the movement of holes

  12. This is the symbol for which type of meter?

    44227.png
    1. voltmeter
    2. ammeter
    3. ohmmeter
    4. galvanometer

  13. Which of the following is NOT an essential component of an electrical circuit?

    1. voltage source
    2. watt
    3. load
    4. conductor

  14. What type of switch would be utilized by a doorbell?

    1. 44272.png
    2. 44263.png
    3. 44251.png
    4. 44238.png

  15. Which of the following is the symbol for an AC voltage source?

    1. 44284.png
    2. 44310.png
    3. 44302.png
    4. 44294.png

  16. Capacitors are also known as

    1. capacitances
    2. dielectrics
    3. condensers
    4. inductors

  17. A material that will not conduct electricity is known as

    1. a conductor
    2. a semiconductor
    3. an insulator
    4. a voltage source

  18. Which of the following materials is NOT a conductor?

    1. rubber
    2. silver
    3. copper
    4. aluminum

  19. A circuit with four 6-ohm resistors wired in series has 12 volts applied to it. What current flows through this circuit?

    1. 5 mA
    2. 50 mA
    3. 500 mA
    4. 5 A

  20. An element that is widely recognized as a semiconductor is

    1. silicon
    2. aluminum
    3. helium
    4. wood

  21. This is the symbol for which type of meter?

    44321.png
    1. voltmeter
    2. ammeter
    3. ohmmeter
    4. galvanometer