ASVAB Electronics Information Practice Test 287106 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.54
Score	0%	71%

Review

1 What's the overall power consumption of a piece of equipment that is rated for 3 amps at 40 volts?

80% Answer Correctly

	119 W
	122 W
	120 W
	60 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 40 volts (V) so the equation becomes P = \( 40 \times 3 \) = 120 W

Which of the following is the formula for calculating electrical power?

73% Answer Correctly

	\(P = {V \over I}\)
	P = I²V
	\(P = {I \over V}\)
	P = IV

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.

What is the voltage of most household electrical systems in the United States?

59% Answer Correctly

	220V
	110V
	60V
	60Hz

Solution

Most households use electricity with a voltage of 110V.

From what energy do photovoltaic cells produce electrical energy?

68% Answer Correctly

	sun
	nuclear
	magnetic
	chemical

Solution

A photovoltaic cell (also known as a solar cell) converts energy from the sun into electrical energy.

Which of the following allows encapsulating complex circuit designs for easier integration into electronic devices and machines?

67% Answer Correctly

	series-parallel circuits
	parallel circuits
	integrated circuits
	series circuits

Solution

Circuits containing transistors are packaged into integrated circuit chips that allow encapsulating complex circuit designs (CPU, memory, I/O) for easier integration into electronic devices and machines.