ASVAB Electronics Information Practice Test 473061 Results

Your Results Global Average
Questions 5 5
Correct 0 3.64
Score 0% 73%

Review

1 What's the overall power consumption of a piece of equipment that is rated for 9 amps at 100 volts?
80% Answer Correctly
450 W
900 W
300 W
907 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 9 amps (I) at 100 volts (V) so the equation becomes P = \( 100 \times 9 \) = 900 W
2

The watt is a unit of measurement for:

78% Answer Correctly

resistance

energy

power

frequency
Solution

Electrical power is measured in watts (W) and is calculated by multiplying the voltage (V) applied to a circuit by the resulting current (I) that flows in the circuit: P = IV. In addition to measuring production capacity, power also measures the rate of energy consumption and many loads are rated for their consumption capacity. For example, a 60W lightbulb utilizes 60W of energy to produce the equivalent of 60W of heat and light energy.

3

Which of the following is the same for each branch of a parallel circuit?

57% Answer Correctly

voltage

current

resistance

power
Solution

In a parallel circuit, each load occupies a separate parallel path in the circuit and the input voltage is fully applied to each path. Unlike a series circuit where current (I) is the same at all points in the circuit, in a parallel circuit, voltage (V) is the same across each parallel branch of the circuit but current differs in each branch depending on the load (resistance) present.

4

Which of the following is not a terminal on a transistor?

59% Answer Correctly

base

collector

emitter

input
Solution

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 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 30 Ω and current is 5.5 amps.
85% Answer Correctly
162 V
330 V
169 V
165 V
Solution

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

V = \( I \times R \) = \( 5.5 \times 30 \) = 165 V