ASVAB Electronics Information Practice Test 818817 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.23
Score	0%	65%

Review

This circuit component symbol represents a(n):

65% Answer Correctly

	DC source
	transformer
	transistor
	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.

In electrical wiring, which of the following are proportional?

50% Answer Correctly

	the length of the wire and the amount of the voltage
	the diameter of the wire and the amount of the current
	the length of the wire and the amount of the current
	the diameter of the wire and the amount of the voltage

Solution

Current flow through a wire increases the temperature of the wire. If too small a wire is used, the wire will heat up causing a loss in conductivity and possibly a fire. The thicker in diameter a wire is, the more current it can carry without overheating.

Which of the following statements about electrical resistance is true?

74% Answer Correctly

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

Which of the following is not a purpose of a resistor in an electrical circuit?

70% Answer Correctly

	multiply the current in the circuit
	moderate the heat in the circuit
	control the voltage in the circuit
	limit the current in the circuit

Solution

Resistors can be chosen in a wide variety of values to control the voltage in a circuit, limit the current, or moderate the heat produced by the components in the circuit.

This circuit component symbol represents a(n):

65% Answer Correctly

	diode
	potentiometer
	capacitor
	fuse

Solution

Capacitors store electricity and are used in circuits as temporary batteries. Capacitors are charged by DC current (AC current passes through a capacitor) and that stored charge can later be dissipated into the circuit as needed. Capacitors are often used to maintain power within a system when it is disconnected from its primary power source or to smooth out or filter voltage within a circuit.