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Electronics Practice Test Flashcards

7 cards from real ASVAB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Electronics Practice Test flashcards as text

  1. What is the unit of electrical capacitance?

    Answer: Farad

    Capacitance is measured in Farads (F), named after scientist Michael Faraday.

  2. In a series RLC circuit at resonance, the impedance is:

    Answer: Equal to the resistance only

    At resonance in a series RLC circuit, inductive and capacitive reactances cancel, leaving only the resistance.

  3. A transformer has 200 primary turns and 50 secondary turns. If the primary voltage is 120V, what is the secondary voltage?

    Answer: 30V

    Using the turns ratio formula: Vs = Vp × (Ns/Np) = 120 × (50/200) = 30V.

  4. Which component stores energy in a magnetic field?

    Answer: Inductor

    An inductor stores energy in a magnetic field when current flows through its coiled wire.

  5. What does a forward-biased diode primarily allow?

    Answer: Current to flow from anode to cathode

    A forward-biased diode allows conventional current to flow from anode to cathode (positive to negative).

  6. The process of converting AC to DC is called:

    Answer: Rectification

    Rectification is the process of converting alternating current (AC) to direct current (DC).

  7. What is the function of a Zener diode?

    Answer: Regulate voltage in reverse bias

    A Zener diode is designed to operate in reverse breakdown to provide a stable reference voltage.