ASVAB Electronics Information Practice Test 173896 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.01
Score	0%	60%

Review

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 faster electron flow will be
	electrically conductive materials have no resistive properties
	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.

Which of the following is a characteristic of batteries connected in series?

61% Answer Correctly

	the positive terminal of one battery is connected to the positive terminal of the next
	total voltage equals the sum of the individual battery voltages
	two connections are made between each adjacent battery
	total voltage equals the average of the individual battery voltages

Solution

You can multiply the voltage or the current supplied by individual batteries by connecting them together either in series or in parallel. The characteristics of batteries connected in series are that total voltage equals the sum of the individual battery voltages, total current equals the average of the individual battery currents, the positive terminal of one battery is connected to the negative terminal of the next, and one connection is made between each adjacent battery.

This circuit component symbol represents a(n):

57% Answer Correctly

	AC source
	DC source
	transformer
	capacitor

Solution

Direct current flows in only one direction in a circuit, from the negative terminal of the voltage source to the positive. A common source of direct current (DC) is a battery.

4 How would you connect 8 [6V 15A] batteries to achieve a combined power output of 6V 120A?

51% Answer Correctly

	orthogonal
	perpendicular
	series-parallel
	parallel

Solution

Connecting the 8 batteries in series multiplies their voltage while keeping their current the same yielding a 48V 15A configuration. Connecting the 8 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 6V 120A configuration. Using a series-parallel connection, 4 batteries can be connected in series and 4 can be connected in parallel resulting in a 24V 60A configuration.

Which of the following allows DC to pass easily but resists the flow of AC?

56% Answer Correctly

	semiconductor
	transformer
	inductor
	capacitor

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.