ASVAB Electronics Information Practice Test 75138 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.25
Score	0%	65%

Review

1 Suppose you have 10 [15V 15A] batteries that you can connect together in series, in parallel, or in series-parallel. Which of the following voltage and ampere combinations cannot be attained using these 10 batteries?

46% Answer Correctly

	150V 15A
	300V 300A
	75V 75A
	15V 150A

Solution

Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 150V 15A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yielding a 15V 150A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 75V 75A configuration.

All electricity is the movement of which subatomic particles?

89% Answer Correctly

	electrons
	nuclei
	protons
	neutrons

Solution

All electricity is the movement of electrons which are subatomic particles that orbit the nucleus of an atom. Electrons occupy various energy levels called shells and how well an element enables the flow of electrons depends on how many electrons occupy its outer (valence) electron shell.

3 How would you connect 10 [9V 25A] batteries to achieve a combined power output of 90V 25A?

53% Answer Correctly

	orthogonal
	series-parallel
	parallel
	series

Solution

Connecting the 10 batteries in series multiplies their voltage while keeping their current the same yielding a 90V 25A configuration. Connecting the 10 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 9V 250A configuration. Using a series-parallel connection, 5 batteries can be connected in series and 5 can be connected in parallel resulting in a 45V 125A configuration.

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

An inductor __________ changes in the electric current flowing through it.

61% Answer Correctly

	enhances
	resists
	eliminates
	doubles

Solution

An inductor is coiled wire that stores electric energy in the form of magnetic energy and resists changes in the electric current flowing through it. If current is increasing, the inductor produces a voltage that slows the increase and, if current is decreasing, the magnetic energy in the coil opposes the decrease to keep the current flowing longer. In contrast to capacitors, inductors allow DC to pass easily but resist the flow of AC.