ASVAB Electronics Practice Test 5

Question 1

What is the primary purpose of a voltage divider circuit?

Accepted Answer

Produce a fraction of the input voltage

Answer

A voltage divider uses two resistors in series to produce an output voltage that is a fraction of the input voltage.

Question 2

In digital electronics, a flip-flop is used to:

Accepted Answer

Store a single binary bit

Answer

A flip-flop is a bistable circuit that stores one bit of binary information (either 0 or 1).

Question 3

What does the term 'impedance' refer to in AC circuits?

Accepted Answer

Total opposition to AC current flow including reactance

Answer

Impedance (Z) is the total opposition to AC current, combining resistance and reactance (inductive and capacitive).

Question 4

Which instrument is used to measure electrical power in a circuit?

Accepted Answer

Wattmeter

Answer

A wattmeter measures electrical power (in watts) consumed by a circuit or component.

Question 5

What type of filter allows only frequencies above its cutoff frequency to pass?

Accepted Answer

High-pass filter

Answer

A high-pass filter attenuates frequencies below the cutoff and passes frequencies above it.

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