ASVAB Electronics Information Practice Test 455027 Results

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

Review

1

A capacitor is often used for which of the following purposes?

68% Answer Correctly

to maintain power in a circuit when the primary power source is disconnected

as a primary power source

to allow a small amount of current to control a large amount of current

to convert alternating current into direct current


Solution

Capacitors store electricity and are used in circuits as temporary batteries. Capacitors are charged by DC current (AC current passes through a capacitor) and that stored charge can later be dissipated into the circuit as needed. Capacitors are often used to maintain power within a system when it is disconnected from its primary power source or to smooth out or filter voltage within a circuit.


2 How would you connect 10 [6V 5A] batteries to achieve a combined power output of 6V 50A?
52% Answer Correctly
orthogonal
series-parallel
parallel
perpendicular

Solution

Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 60V 5A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 6V 50A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 30V 25A configuration.


3

This circuit component symbol represents a(n):

70% Answer Correctly

resistor

fuse

diode

capacitor


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.


4

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

74% Answer Correctly

diode

fuse

transistor

resistor


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.


5 How would you connect 8 [12V 25A] batteries to achieve a combined power output of 96V 25A?
53% Answer Correctly
orthogonal
series
perpendicular
parallel

Solution

Connecting the 8 batteries in series multiplies their voltage while keeping their current the same yielding a 96V 25A configuration. Connecting the 8 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 12V 200A configuration. Using a series-parallel connection, 4 batteries can be connected in series and 4 can be connected in parallel resulting in a 48V 100A configuration.