ASVAB Electronics Information Practice Test 200573 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.08
Score	0%	62%

Review

What is the frequency of most household electrical systems?

60% Answer Correctly

	110Hz
	60Hz
	110V
	60MHz

Solution

Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances. Most households use electricity with a frequency of 60Hz.

This circuit component symbol represents a(n):

55% Answer Correctly

	transformer
	fuse
	potentiometer
	inductor

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.

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

70% Answer Correctly

	parallel
	series
	variable
	dynamic

Solution

The voltage output of a transformer primarily depends on which of the following?

58% Answer Correctly

	the conductor used for the wire in the coils
	the number of turns in the wire of the coils
	the diameter of the wire in the coils
	the diameter of the coils

Solution

A transformer utilizes an inductor to increase or decrease the voltage in a circuit. AC flowing in a coil wrapped around an iron core magnetizes the core causing it to produce a magnetic field. This magnetic field generates a voltage in a nearby coil of wire and, depending on the number of turns in the wire of the primary (source) and secondary coils and their proximity, voltage is induced in the secondary coil.

An engineer who wants to document an electric circuit would create which of the following?

67% Answer Correctly

	a schematic
	a layout
	a matrix
	a blueprint

Solution

A schematic is the proper name for a drawing of an electric or electronic circuit.