ASVAB Electronics Information Practice Test 631441 Results

Your Results Global Average
Questions 5 5
Correct 0 3.62
Score 0% 72%

Review

1

Voltage and current are __________ proportional.

66% Answer Correctly

inversely

directly

not

indirectly
Solution

Voltage (V) is the electrical potential difference between two points. Electrons will flow as current from areas of high potential (concentration of electrons) to areas of low potential. Voltage and current are directly proportional in that the higher the voltage applied to a conductor the higher the current that will result.

2 What's the overall power consumption of a piece of equipment that is rated for 2 amps at 50 volts?
85% Answer Correctly
33 W
99 W
100 W
103 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 2 amps (I) at 50 volts (V) so the equation becomes P = \( 50 \times 2 \) = 100 W
3 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 60 Ω and current is 2.5 amps.
85% Answer Correctly
450 V
159 V
151.5 V
150 V
Solution

Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.

V = \( I \times R \) = \( 2.5 \times 60 \) = 150 V

4

This circuit component symbol represents a(n):

67% Answer Correctly

transistor

inductor

transformer

diode
Solution

The transistor is the foundation of modern electronic devices. It is made entirely from semiconductor material (making it a solid state device) and can serve many different functions in a circuit including acting as a switch, amplifier, or current regulator. A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.

5

General current flow in a transistor is from __________ to __________.

50% Answer Correctly

base, collector

collector, emitter

collector, base

base, emitter
Solution

The transistor is the foundation of modern electronic devices. It is made entirely from semiconductor material (making it a solid state device) and can serve many different functions in a circuit including acting as a switch, amplifier, or current regulator. A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.