ASVAB Electronics Information Practice Test 887572 Results

Your Results Global Average
Questions 5 5
Correct 0 3.46
Score 0% 69%

Review

1

The valence shell of n insulator is how full of electrons?

56% Answer Correctly

less than half full

empty

more than half full

half full
Solution

Insulators have valence shells that are more than half full of electrons and, as such, are tightly bound to the nucleus and difficult to move from one atom to another.

2

An amplifier is most similar in function to which of the following:

65% Answer Correctly

transistor

capacitor

step-down transformer

step-up transformer
Solution

An amplifier is a device that takes a small input signal and creates a larger output signal. This makes it most similar to a step-up transformer which takes a smaller input voltage and creates a larger output voltage.

3

You would measure the amount of voltage between two points in a circuit with a(n):

83% Answer Correctly

ammeter

reostat

battery

voltmeter
Solution

Voltage (V) is the electrical potential difference between two points. A voltmeter is used to measure the voltage between two points in a circuit.

4 What's the overall power consumption of a piece of equipment that is rated for 2 amps at 20 volts?
80% Answer Correctly
44 W
47 W
60 W
40 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 20 volts (V) so the equation becomes P = \( 20 \times 2 \) = 40 W
5

The sum of the voltage drops across each resistor in a __________ circuit will equal the total voltage applied to the circuit.

54% Answer Correctly

parallel

closed

series-parallel

series
Solution

A series circuit has only one path for current to flow. In a series circuit, current (I) is the same throughout the circuit and is equal to the total voltage (V) applied to the circuit divided by the total resistance (R) of the loads in the circuit. The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit.