ASVAB Electronics Information Practice Test 213862 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.28
Score	0%	66%

Review

This circuit component symbol represents a(n):

67% Answer Correctly

	diode
	transformer
	inductor
	transistor

Solution

The transistor is the foundation of modern electronic devices. It is made entirely from semiconductor material (making it a solid state device) and can serve many different functions in a circuit including acting as a switch, amplifier, or current regulator. 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.

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

69% Answer Correctly

	battery
	potentiometer
	ammeter
	voltmeter

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.

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

56% Answer Correctly

	empty
	half full
	more than half full
	less than 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.

Direct current flows from the __________ terminal of the voltage source to the __________ terminal.

62% Answer Correctly

	positive, positive
	negative, negative
	negative, positive
	positive, negative

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.

Longer the electrical wires mean _______________ voltage drop.

73% Answer Correctly

	lesser
	greater
	complete
	diminishing

Solution

Electrical wires have a certain amount of resistance per foot. A longer wire means more resistance and a greater voltage drop.