ASVAB Electronics Information Practice Test 717945 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.11
Score	0%	62%

Review

A capacitor is often used for which of the following purposes?

68% Answer Correctly

	to allow a small amount of current to control a large amount of current
	as a primary power source
	to maintain power in a circuit when the primary power source is disconnected
	to convert alternating current into direct current

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.

In a series circuit, which of the following is the same across all branches of the circuit?

61% Answer Correctly

	current
	voltage
	conductance
	resistance

Solution

A series circuit has only one path for current to flow. In a series circuit, current (I) is the same throughout the circuit and is equal to the total voltage (V) applied to the circuit divided by the total resistance (R) of the loads in the circuit. The sum of the voltage drops across each resistor in the circuit will equal the total voltage applied to the circuit.

This circuit diagram represents a(n):

69% Answer Correctly

	open circuit
	series-parallel circuit
	parallel circuit
	series circuit

Solution

4 Suppose you have 6 [15V 20A] 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 6 batteries?

46% Answer Correctly

	90V 20A
	15V 120A
	45V 60A
	180V 240A

Solution

Connecting the 6 batteries in series multiplies their voltage while keeping their current the same yielding a 90V 20A configuration. Connecting the 6 batteries in parallel multiplies their current while keeping their voltage the same yielding a 15V 120A configuration. Using a series-parallel connection, 3 batteries can be connected in series and 3 can be connected in parallel resulting in a 45V 60A configuration.

A diode to an electronic circuit is like a _______________ to a city?

67% Answer Correctly

	traffic light
	highway
	one-way street
	parking lot

Solution

A diode allows current to pass easily in one direction and blocks current in the other direction.