ASVAB Electronics Information Practice Test 933194 Results

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

Review

1

Which of these materials is not a good conductor of electricity?

79% Answer Correctly

gold

tin

copper

air
Solution

All conductors have resistance and the amount of resistance varies with the element. In general, metals make the best conductors of electricity and non-metals make the worst conductors of electricity.

2

This circuit component symbol represents a(n):

70% Answer Correctly

capacitor

diode

fuse

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.

3 What's the overall power consumption of a piece of equipment that is rated for 3 amps at 120 volts?
85% Answer Correctly
396 W
360 W
120 W
1080 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 3 amps (I) at 120 volts (V) so the equation becomes P = \( 120 \times 3 \) = 360 W
4

Which of the following is not a purpose of a resistor in an electrical circuit?

70% Answer Correctly

limit the current in the circuit

multiply the current in the circuit

control the voltage in the circuit

moderate the heat in the circuit
Solution

Resistors can be chosen in a wide variety of values to control the voltage in a circuit, limit the current, or moderate the heat produced by the components in the circuit.

5

In an electronic circuit, a thermocouple can be used to:

42% Answer Correctly

keep the circuit at a designated safe temperature

link the temperature of one component in the circuit to that of another component in the circuit

open or close a circuit at a designated temperature

increase or decrease the temperature of a component in the circuit
Solution

A thermocouple is a temperature sensor that consists of two wires made from different conductors. The junction of these two wires produces a voltage based on the temperature difference between them and can be used like a switch to open or close the circuit at a designated temperature.