ASVAB Electronics Information Practice Test 56474 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.39
Score	0%	68%

Review

This circuit component symbol represents a(n):

67% Answer Correctly

	transformer
	inductor
	transistor
	diode

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.

This circuit component symbol represents a(n):

65% Answer Correctly

	AC source
	transformer
	DC source
	transistor

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.

3 Use Ohm's Law to calculate the value of current in this circuit if voltage is 405 volts and resistance is 90 Ω.

81% Answer Correctly

	13.5 A
	4.5 A
	6 A
	4.05 A

Solution

Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.

Solved for current, I = \( \frac{V}{R} \) = \( \frac{405}{90} \) = 4.5 A

The diameter of a number 12 wire is __________ the diameter of a number 6 wire?

52% Answer Correctly

	less than
	double
	triple
	more than

Solution

The larger the number the smaller the diameter of the wire. So, the diameter of a number 12 wire is less than the diameter of a number 6 wire.

The formula specifying Ohm's law is which of the following?

76% Answer Correctly

	V = I²R
	\(V = {R \over I}\)
	V = IR
	\(V = {I \over R}\)

Solution

Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.