ASVAB Electronics Information Practice Test 742625 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.51
Score	0%	70%

Review

1 What's the overall power consumption of a piece of equipment that is rated for 3 amps at 30 volts?

80% Answer Correctly

	90 W
	135 W
	92 W
	91.5 W

Solution

Power is measured in watts (W) and 1 watt equals 1 ampere multiplied by 1 volt: P = \( V \times I \). For this problem, the equipment is rated for 3 amps (I) at 30 volts (V) so the equation becomes P = \( 30 \times 3 \) = 90 W

A transistor works by allowing a small amount of current to control general current flow. Where is the small amount of current applied?

55% Answer Correctly

	collector
	input
	base
	emitter

Solution

The transistor is the foundation of modern electronic devices. It is made entirely from semiconductor material (making it a solid state device) and can serve many different functions in a circuit including acting as a switch, amplifier, or current regulator. A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.

Which of the following is not a terminal on a transistor?

59% Answer Correctly

	base
	collector
	emitter
	input

Solution

A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.

Silver and gold are among the most highly conductive elements. Why is copper used much more often as a conductor in electrical circuits?

80% Answer Correctly

	copper is durable and relatively cheap
	silver and gold are brittle
	silver and gold are costly
	all of these

Solution

All conductors have resistance and the amount of resistance varies with the element. But, resistance isn't the only consideration when choosing a conductor as the most highly conductive elements like silver and gold are also more expensive and more brittle than slightly less conductive elements like copper. A balance needs to be struck between the electrical qualities of a material and its cost and durability.

A diode to an electronic circuit is like a _______________ to a city?

67% Answer Correctly

	highway
	traffic light
	parking lot
	one-way street

Solution

A diode allows current to pass easily in one direction and blocks current in the other direction.