ASVAB Electronics Information Practice Test 649334 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.90
Score	0%	78%

Review

Capacitors are charged by what type of current?

65% Answer Correctly

	high voltage
	direct
	alternating
	low voltage

Solution

Capacitors store voltage 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.

2 What's the overall power consumption of a piece of equipment that is rated for 6 amps at 70 volts?

92% Answer Correctly

	210 W
	420 W
	422 W
	462 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 6 amps (I) at 70 volts (V) so the equation becomes P = \( 70 \times 6 \) = 420 W

The hertz is a unit of measurement for:

81% Answer Correctly

	inductance
	energy
	frequency
	power

Solution

The hertz is a unit of measurement for frequency.

Why does current in an electric circuit create heat?

77% Answer Correctly

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

Solution

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

This circuit component symbol represents a(n):

67% Answer Correctly

	inductor
	diode
	transistor
	transformer

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.