ASVAB Electronics Information Practice Test 762931 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.66
Score	0%	73%

Review

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

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

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 capacitor is often used for which of the following purposes?

68% Answer Correctly

	to convert alternating current into direct current
	as a primary power source
	to allow a small amount of current to control a large amount of current
	to maintain power in a circuit when the primary power source is disconnected

Solution

Capacitors store electricity and are used in circuits as temporary batteries. Capacitors are charged by DC current (AC current passes through a capacitor) and that stored charge can later be dissipated into the circuit as needed. Capacitors are often used to maintain power within a system when it is disconnected from its primary power source or to smooth out or filter voltage within a circuit.

An engineer who wants to document an electric circuit would create which of the following?

67% Answer Correctly

	a schematic
	a matrix
	a layout
	a blueprint

Solution

A schematic is the proper name for a drawing of an electric or electronic circuit.

4 A circuit with a 120-volt power supply is protected by a 5-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

82% Answer Correctly

	200 W
	600 W
	601 W
	900 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 5A circuit breaker would allow is 120V x 5A = 600 W.

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

67% Answer Correctly

	parking lot
	highway
	traffic light
	one-way street

Solution

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