ASVAB Electronics Practice Test 2

Question 1

What is the unit of electrical capacitance?

Accepted Answer

Farad

Answer

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

Question 2

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

Accepted Answer

Equal to the resistance only

Answer

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

Question 3

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

Accepted Answer

30V

Answer

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

Question 4

Which component stores energy in a magnetic field?

Accepted Answer

Inductor

Answer

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

Question 5

What does a forward-biased diode primarily allow?

Accepted Answer

Current to flow from anode to cathode

Answer

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

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