ASVAB Electronics Information Practice Test 813329 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.34
Score	0%	67%

Review

Which of the following is the preferred method for splicing wires?

56% Answer Correctly

	soldering
	screw-on connectors
	wire crimps
	wrap in small gauge wire

Solution

Splicing is permanently joining two wires together. Splicing can be done with screw-on connectors or wire crimps but the preferred method for splicing is soldering. Soldering takes the most effort but results in a connection that is electrically and mechanically identical to the original wire.

2 A circuit with a 120-volt power supply is protected by a 15-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

82% Answer Correctly

	1620 W
	1792 W
	1800 W
	600 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 15A circuit breaker would allow is 120V x 15A = 1800 W.

Direct current flows from the __________ terminal of the voltage source to the __________ terminal.

62% Answer Correctly

	negative, negative
	positive, negative
	positive, positive
	negative, positive

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.

What kind of diode allows current to flow in the opposite direction once a certain voltage threshold is reached?

50% Answer Correctly

	light emitting diode
	v-type diode
	zener diode
	standard diode

Solution

A diode allows current to pass easily in one direction and blocks current in the other direction. A zener diode is a diode which allows current to flow in one direction as normal and will also allow current flow in the reverse direction when the voltage is above a certain value. This value is called the breakdown voltage.

The ohm is a unit of measurement for:

81% Answer Correctly

	power
	capacitance
	energy
	resistance

Solution

Resistance is opposition to the flow of current and is measured in ohms (Ω). One ohm is defined as the amount of resistance that will allow one ampere of current to flow if one volt of voltage is applied. As resistance increases, current decreases as resistance and current are inversely proportional.