ASVAB Electronics Information Practice Test 995716 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.57
Score	0%	71%

Review

Using a fuse with a current rating higher than that required by a circuit:

70% Answer Correctly

	is recommended
	makes no difference
	is required
	makes the circuit less safe

Solution

A fuse is a type of low resistance resistor that stops current flow in a circuit in response to a larger than intended electric current flow. Using a fuse with a higher current rating than required by a circuit is less safe as it could potentially allow overcurrent and risk a fire or heat-related equipment damage.

2 A circuit with a 120-volt power supply is protected by a 20-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

84% Answer Correctly

	2403 W
	2402 W
	800 W
	2400 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 20A circuit breaker would allow is 120V x 20A = 2400 W.

Electricity cannot flow...

72% Answer Correctly

	through a circuit with resistance
	through an open circuit
	through a closed circuit
	through a circuit under load

Solution

An electrical circuit is a path through which electricity flows. This path contains one or more components that create a load (something that is using electricity) and that load acts as resistance to the passage of electricity through the circuit. Electricity can only flow through a circuit when the path is closed and cannot flow through an open circuit.

Direct current flows from the __________ terminal of the voltage source to the __________ terminal.

62% Answer Correctly

	negative, positive
	positive, negative
	positive, positive
	negative, negative

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.

A transistor to an electronic circuit is like a _______________ to a house?

68% Answer Correctly

	driveway
	gate
	no trespassing sign
	safe

Solution

A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor. A transistor acts as a gate or switch for electronic signals.