ASVAB Electronics Information Practice Test 32585 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.56
Score	0%	71%

Review

Which of the following is a difference between a circuit breaker and a fuse?

80% Answer Correctly

	all of these
	a fuse responds more quickly than a circuit breaker
	a fuse is cheaper than a circuit breaker
	a circuit breaker can be reused

Solution

Like fuses, circuit breakers stop current flow once it reaches a certain amount. They have the advantage of being reusable (fuses must be replaced when "blown") but respond more slowly to current surges and are more expensive than fuses.

Why does current in an electric circuit create heat?

77% Answer Correctly

	voltage is naturally hot
	the wire in the circuit burns when current passes through
	heat is created when the current overcomes resistance in the wire
	current is naturally hot

Solution

Current in an electric circuit creates heat when the current overcomes resistance in the wire.

You would measure the amount of voltage between two points in a circuit with a(n):

83% Answer Correctly

	voltmeter
	ammeter
	reostat
	battery

Solution

Voltage (V) is the electrical potential difference between two points. A voltmeter is used to measure the voltage between two points in a circuit.

In household electrical wiring, which color of insulation indicates the 'hot' wire?

50% Answer Correctly

	white
	green
	red
	black

Solution

In the NM cable used for wiring homes, each cable has three wires inside a sheath with each wire covered in a different color of insulation to indicate its type. The wire with the black insulation is the 'hot' wire, white is the neutral wire, and the ground wire is either covered in green insulation or left bare.

Voltage and current are __________ proportional.

66% Answer Correctly

	not
	directly
	indirectly
	inversely

Solution

Voltage (V) is the electrical potential difference between two points. Electrons will flow as current from areas of high potential (concentration of electrons) to areas of low potential. Voltage and current are directly proportional in that the higher the voltage applied to a conductor the higher the current that will result.