ASVAB Electronics Information Practice Test 315632 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.42
Score	0%	68%

Review

Which of the following is the preferred method for splicing wires?

57% Answer Correctly

	wrap in small gauge wire
	wire crimps
	screw-on connectors
	soldering

Solution

Splicing is permanently joining two wires together. Splicing can be done with screw-on connectors or wire crimps but the preferred method for splicing is soldering. Soldering takes the most effort but results in a connection that is electrically and mechanically identical to the original wire.

2 Use Ohm's Law to calculate the value of current in this circuit if voltage is 140 volts and resistance is 20 Ω.

80% Answer Correctly

	21 A
	10 A
	7 A
	6.3 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 = \( \frac{V}{R} \) = \( \frac{140}{20} \) = 7 A

Which of the following is a difference between a circuit breaker and a fuse?

80% Answer Correctly

	a fuse responds more quickly than a circuit breaker
	a fuse is cheaper than a circuit breaker
	a circuit breaker can be reused
	all of these

Solution

Like fuses, circuit breakers stop current flow once it reaches a certain amount. They have the advantage of being reusable (fuses must be replaced when "blown") but respond more slowly to current surges and are more expensive than fuses.

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

Solution

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

The valence shell of a conductor is how full of electrons?

52% Answer Correctly

	half full
	more than half full
	full
	less than half full

Solution

Conductors are elements that allow electrons to flow freely. Their valence shell is less than half full of electrons that are able to move easily from one atom to another.