ASVAB Electronics Information Practice Test 878703 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.34
Score	0%	67%

Review

In metals, increasing the temperature typically _____________ conductivity.

50% Answer Correctly

	does nothing to
	eliminates
	increases
	decreases

Solution

All conductors have resistance and the amount of resistance varies with the element. Metals exhibit increased resistance (and, therefore, lower conductivity) as their temperature increases.

2 What's the overall power consumption of a piece of equipment that is rated for 3 amps at 50 volts?

80% Answer Correctly

	151.5 W
	300 W
	152 W
	150 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 3 amps (I) at 50 volts (V) so the equation becomes P = \( 50 \times 3 \) = 150 W

Which of the following statements about electrical resistance is true?

75% Answer Correctly

	the less resistive the conductor is the slower electron flow will be
	the more resistive the conductor is the slower electron flow will be
	electrically conductive materials have no resistive properties
	the more resistive the conductor is the faster electron flow will be

Solution

Resistance is opposition to the flow of current. As resistance increases, current decreases as resistance and current are inversely proportional.

A solid state device has which of the following characteristics?

53% Answer Correctly

	made entirely from conductive material
	made entirely from insulative material
	made entirely from semiconductor material
	made from a mix of conductive and insulative material

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.

The joule is a unit of measurement for:

67% Answer Correctly

	capacitance
	energy
	power
	resistance

Solution

The joule is a unit of measurement for energy.