ASVAB Electronics Information Practice Test 506456 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.95
Score	0%	79%

Review

You would measure the amount of resistance at a certain point in a circuit with a(n):

78% Answer Correctly

	voltmeter
	potentiometer
	ohmmeter
	ammeter

Solution

Resistance is opposition to the flow of current and is measured in ohms (Ω). An ohmmeter is used to measure the amount of resistance at a certain point in a circuit.

This circuit diagram represents a(n):

69% Answer Correctly

	series-parallel circuit
	open circuit
	series circuit
	parallel circuit

Solution

A series circuit has only one path for current to flow. In a series circuit, current (I) is the same throughout the circuit and is equal to the total voltage (V) applied to the circuit divided by the total resistance (R) of the loads in the circuit. The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit.

3 What's the overall power consumption of a piece of equipment that is rated for 8 amps at 20 volts?

92% Answer Correctly

	160 W
	80 W
	176 W
	161.5 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 8 amps (I) at 20 volts (V) so the equation becomes P = \( 20 \times 8 \) = 160 W

4 A circuit with a 120-volt power supply is protected by a 15-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

85% Answer Correctly

	1795 W
	1620 W
	3600 W
	1800 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 15A circuit breaker would allow is 120V x 15A = 1800 W.

This circuit component symbol represents a(n):

66% Answer Correctly

	DC source
	transformer
	transistor
	AC source

Solution

In contrast to the constant one-way flow of direct current, alternating current changes direction many times each second. Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances.