ASVAB Electronics Information Practice Test 411942 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.42
Score	0%	68%

Review

The joule is a unit of measurement for:

67% Answer Correctly

	capacitance
	power
	energy
	resistance

Solution

The joule is a unit of measurement for energy.

2 What's the overall power consumption of a piece of equipment that is rated for 2 amps at 120 volts?

80% Answer Correctly

	720 W
	240 W
	242 W
	80 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 2 amps (I) at 120 volts (V) so the equation becomes P = \( 120 \times 2 \) = 240 W

In household electrical wiring, which color of insulation indicates the 'hot' wire?

50% Answer Correctly

	green
	black
	red
	white

Solution

In the NM cable used for wiring homes, each cable has three wires inside a sheath with each wire covered in a different color of insulation to indicate its type. The wire with the black insulation is the 'hot' wire, white is the neutral wire, and the ground wire is either covered in green insulation or left bare.

Which of the following is a characteristic of batteries connected in series?

62% Answer Correctly

	total voltage equals the sum of the individual battery voltages
	the positive terminal of one battery is connected to the positive terminal of the next
	two connections are made between each adjacent battery
	total voltage equals the average of the individual battery voltages

Solution

You can multiply the voltage or the current supplied by individual batteries by connecting them together either in series or in parallel. The characteristics of batteries connected in series are that total voltage equals the sum of the individual battery voltages, total current equals the average of the individual battery currents, the positive terminal of one battery is connected to the negative terminal of the next, and one connection is made between each adjacent battery.

Electrical power is measured in:

74% Answer Correctly

	coulombs
	watts
	volts
	amperes

Solution

Electrical power is measured in watts (W) and is calculated by multiplying the voltage (V) applied to a circuit by the resulting current (I) that flows in the circuit: P = IV. In addition to measuring production capacity, power also measures the rate of energy consumption and many loads are rated for their consumption capacity. For example, a 60W lightbulb utilizes 60W of energy to produce the equivalent of 60W of heat and light energy.