ASVAB Electronics Information Practice Test 908643 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.58
Score	0%	72%

Review

1 What's the overall power consumption of a piece of equipment that is rated for 4 amps at 110 volts?

80% Answer Correctly

	440 W
	444 W
	439 W
	1320 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 4 amps (I) at 110 volts (V) so the equation becomes P = \( 110 \times 4 \) = 440 W

The volt is a unit of measurement for:

79% Answer Correctly

	voltage
	power
	capacitance
	current

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.

Using a fuse with a current rating higher than that required by a circuit:

70% Answer Correctly

	makes no difference
	is required
	makes the circuit less safe
	is recommended

Solution

A fuse is a type of low resistance resistor that stops current flow in a circuit in response to a larger than intended electric current flow. Using a fuse with a higher current rating than required by a circuit is less safe as it could potentially allow overcurrent and risk a fire or heat-related equipment damage.

The valence shell of n insulator is how full of electrons?

56% Answer Correctly

	half full
	empty
	less than half full
	more than half full

Solution

Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another.

The valence shell of a semiconductor is how full of electrons?

67% Answer Correctly

	empty
	more than half full
	half full
	less than half full

Solution

Semiconductors have valence shells that are exacly half full and can conduct electricity under some conditions but not others. This property makes them useful for the control of electrical current.