ASVAB Electronics Information Practice Test 914196 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.16
Score	0%	63%

Review

1 A circuit with a 120-volt power supply is protected by a 5-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

82% Answer Correctly

	200 W
	601.5 W
	600 W
	300 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 5A circuit breaker would allow is 120V x 5A = 600 W.

An engineer who wants to document an electric circuit would create which of the following?

67% Answer Correctly

	a schematic
	a layout
	a matrix
	a blueprint

Solution

A schematic is the proper name for a drawing of an electric or electronic circuit.

In metals, increasing the temperature typically _____________ conductivity.

50% Answer Correctly

	does nothing to
	eliminates
	decreases
	increases

Solution

All conductors have resistance and the amount of resistance varies with the element. Metals exhibit increased resistance (and, therefore, lower conductivity) as their temperature increases.

One of the lights on your Christmas tree burns out and this causes the rest of the lights connected to that strand to go dark. How are the lights in that strand connected?

73% Answer Correctly

	perpendicular
	series
	parallel
	series-parallel

Solution

Lights connected in series form a chain with each light connecting to adjacent lights via one wire. Therefore, if one of the lights burns out and breaks the series, none of the other lights will receive power and they'll go dark. Lights connected in parallel each connect to the positive and negative nodes of the power source and would not go dark if one of their neighbors burnt out.

Which of the following is not true about a line drop?

43% Answer Correctly

	it is addressed by raising voltage and lowering current across the transmission line
	it is a decrease in voltage between two points on a line
	it is caused by resistance
	it is addressed by raising current and lowering voltage across the ransmission line

Solution

Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances. A line drop is a decrease in voltage between two points on an electrical transmission line due to resistance in the line. A lower current and higher voltage across the line will help compensate for the line drop.