ASVAB Electronics Information Practice Test 464346 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.41
Score	0%	68%

Review

This circuit component symbol represents a(n):

65% Answer Correctly

	transistor
	transformer
	DC source
	AC source

Solution

In contrast to the constant one-way flow of direct current, alternating current changes direction many times each second. Electricity is delivered from power stations to customers as AC because it provides a more efficient way to transport electricity over long distances.

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

59% Answer Correctly

	base
	emitter
	collector
	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.

Why is an insulator a poor conductor of electricity?

68% Answer Correctly

	an insulator has few free electrons
	an insulator has many free electrons
	an insulator is made of inorganic material
	an insulator is made of organic material

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.

You would measure the amount of current through a circuit with a(n):

69% Answer Correctly

	ammeter
	voltmeter
	potentiometer
	battery

Solution

Current is the rate of flow of electrons per unit time and is measured in amperes (A). An ammeter is used to measure the electric current in a circuit.

Which of these materials is not a good conductor of electricity?

79% Answer Correctly

	gold
	air
	copper
	tin

Solution

All conductors have resistance and the amount of resistance varies with the element. In general, metals make the best conductors of electricity and non-metals make the worst conductors of electricity.