ASVAB Electronics Information Practice Test 551898 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.63
Score	0%	73%

Review

Which of the following will help to prevent a short circuit?

74% Answer Correctly

	fuse
	resistor
	diode
	transistor

Solution

Fuses are thin wires that melt when the current in a circuit exceeds a preset amount. They help prevent short circuits from damaging circuit components when an unusually large current is applied to the circuit, either through component failure or spikes in applied voltage.

The volt is a unit of measurement for:

79% Answer Correctly

	current
	voltage
	capacitance
	power

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.

3 A circuit with a 120-volt power supply is protected by a 10-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

82% Answer Correctly

	3600 W
	1080 W
	1200 W
	1202 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 10A circuit breaker would allow is 120V x 10A = 1200 W.

This circuit diagram represents a(n):

69% Answer Correctly

	series circuit
	parallel circuit
	open circuit
	series-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.

What is the potential difference in an electrical circuit a measure of?

58% Answer Correctly

	the current at a specific location in the circuit
	the resistance at a specific location in the circuit
	the load at a specific location in the circuit
	the voltage at a specific location in the circuit

Solution

Electrons flow from an area of high concentration to an area of low concentration. A high voltage indicates a high concentration of electrons that creates a greater potential for electron flow than a low voltage. When applied to a load, voltage creates electricity and potential difference is the measure of voltage at a specific location in an electrical circuit.