ASVAB Electronics Information Practice Test 459098 Results

Your Results Global Average
Questions 5 5
Correct 0 3.72
Score 0% 74%

Review

1

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

74% Answer Correctly

transistor

resistor

diode

fuse
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.

2

This circuit component symbol represents a(n):

65% Answer Correctly

transformer

AC source

DC source

transistor
Solution

In contrast to the constant one-way flow of direct current, alternating current changes direction many times each second. Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances.

3 What's the overall power consumption of a piece of equipment that is rated for 4 amps at 150 volts?
80% Answer Correctly
1200 W
601.5 W
540 W
600 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 4 amps (I) at 150 volts (V) so the equation becomes P = \( 150 \times 4 \) = 600 W
4

The hertz is a unit of measurement for:

81% Answer Correctly

power

energy

inductance

frequency
Solution

The hertz is a unit of measurement for frequency.

5

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

66% Answer Correctly

storage shed

driveway

safe

gate
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.