ASVAB Electronics Information Practice Test 792911 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.28
Score	0%	66%

Review

1 Suppose you have 6 [12V 15A] batteries that you can connect together in series, in parallel, or in series-parallel. Which of the following voltage and ampere combinations cannot be attained using these 6 batteries?

46% Answer Correctly

	72V 15A
	36V 45A
	144V 180A
	12V 90A

Solution

Connecting the 6 batteries in series multiplies their voltage while keeping their current the same yielding a 72V 15A configuration. Connecting the 6 batteries in parallel multiplies their current while keeping their voltage the same yielding a 12V 90A configuration. Using a series-parallel connection, 3 batteries can be connected in series and 3 can be connected in parallel resulting in a 36V 45A configuration.

Which of the following is the preferred method for splicing wires?

57% Answer Correctly

	screw-on connectors
	wrap in small gauge wire
	soldering
	wire crimps

Solution

Splicing is permanently joining two wires together. Splicing can be done with screw-on connectors or wire crimps but the preferred method for splicing is soldering. Soldering takes the most effort but results in a connection that is electrically and mechanically identical to the original wire.

3 What's the overall power consumption of a piece of equipment that is rated for 6 amps at 40 volts?

80% Answer Correctly

	80 W
	240 W
	216 W
	243 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 6 amps (I) at 40 volts (V) so the equation becomes P = \( 40 \times 6 \) = 240 W

The joule is a unit of measurement for:

67% Answer Correctly

	energy
	capacitance
	resistance
	power

Solution

The joule is a unit of measurement for energy.

The valence shell of a semiconductor is how full of electrons?

67% Answer Correctly

	more than half full
	half full
	less than half full
	empty

Solution

Semiconductors have valence shells that are exacly half full and can conduct electricity under some conditions but not others. This property makes them useful for the control of electrical current.