ASVAB Electronics Information Practice Test 545320 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.69
Score	0%	74%

Review

Which of the following is not a purpose of a resistor in an electrical circuit?

70% Answer Correctly

	moderate the heat in the circuit
	multiply the current in the circuit
	limit the current in the circuit
	control the voltage in the circuit

Solution

Resistors can be chosen in a wide variety of values to control the voltage in a circuit, limit the current, or moderate the heat produced by the components in the circuit.

What type of current flows in only one direction in a circuit?

82% Answer Correctly

	alternating
	direct
	parallel
	series

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.

Which of the following is not a characteristic of a step-up transformer?

54% Answer Correctly

	increases voltage
	the secondary voltage is higher than the primary voltage
	the primary voltage is higher than the secondary voltage
	has more turns in the secondary winding than in the primary winding

Solution

As their names indicate, a step-up transformer is used to step up or increase voltage and a step-down transformer is used to step down or decrease voltage. In a step-up transformer, the secondary voltage is higher than the primary voltage and it has more turns in the secondary winding than in the primary winding.

4 What's the overall power consumption of a piece of equipment that is rated for 7 amps at 10 volts?

92% Answer Correctly

	140 W
	71.5 W
	77 W
	70 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 7 amps (I) at 10 volts (V) so the equation becomes P = \( 10 \times 7 \) = 70 W

Which of the following converts electrical energy into another form of energy in an electrical circuit?

61% Answer Correctly

	wiring
	load
	DC source
	AC source

Solution

A load is a source of resistance that converts electrical energy into another form of energy. The components of a microwave, for example, are loads that work together to convert household electricity into radation that can be used to quickly cook food.