ASVAB Electronics Information Practice Test 701048 Results

Your Results Global Average
Questions 5 5
Correct 0 3.48
Score 0% 70%

Review

1

In an electrical circuit, resistors have fixed or __________ resistance.

69% Answer Correctly

variable

parallel

dynamic

series
Solution

Resistors are used to limit voltage and/or current in a circuit and can have a fixed or variable resistance.  Variable resistors (often called potentiometers or rheostats) are used when dynamic control over the voltage/current in a circuit is needed, for example, in a light dimmer or volume control.

2

This circuit diagram represents a(n):

69% Answer Correctly

series circuit

parallel circuit

series-parallel circuit

open circuit
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.

3 What's the overall power consumption of a piece of equipment that is rated for 7 amps at 90 volts?
80% Answer Correctly
945 W
631 W
629 W
630 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 7 amps (I) at 90 volts (V) so the equation becomes P = \( 90 \times 7 \) = 630 W
4

This circuit component symbol represents a(n):

72% Answer Correctly

resistor

potentiometer

inductor

capacitor
Solution

Resistors are used to limit voltage and/or current in a circuit and can have a fixed or variable resistance.  Variable resistors (often called potentiometers or rheostats) are used when dynamic control over the voltage/current in a circuit is needed, for example, in a light dimmer or volume control.

5

The valence shell of a conductor is how full of electrons?

52% Answer Correctly

full

half full

less than half full

more than half full
Solution

Conductors are elements that allow electrons to flow freely. Their valence shell is less than half full of electrons that are able to move easily from one atom to another.