ASVAB Electronics Information Practice Test 498692 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.40
Score	0%	68%

Review

An amplifier is most similar in function to which of the following:

65% Answer Correctly

	step-down transformer
	step-up transformer
	transistor
	capacitor

Solution

An amplifier is a device that takes a small input signal and creates a larger output signal. This makes it most similar to a step-up transformer which takes a smaller input voltage and creates a larger output voltage.

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

52% Answer Correctly

	total current equals the sum of the individual battery currents
	one connection is made between each adjacent battery
	the positive terminal of one battery is connected to the negative terminal of the next
	total current equals the average of the individual battery currents

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 parallel are that total voltage equals the average of the individual battery voltages, total current equals the sum of the individual battery currents, the positive terminal of one battery is connected to the positive terminal of the next, the negative terminal of one battery is connected to the negative terminal of the next, and two connections are made between each adjacent battery.

3 A circuit with a 120-volt power supply is protected by a 10-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

82% Answer Correctly

	400 W
	1203 W
	1080 W
	1200 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 10A circuit breaker would allow is 120V x 10A = 1200 W.

If an electrical circuit is interrupted, which of the following will result?

61% Answer Correctly

	open circuit
	parallel circuit
	closed circuit
	short circuit

Solution

A closed circuit is a complete loop or path that electricity follows. It consists of a source of voltage, a load, and connective conductors. If the circuit is interrupted, if a wire is disconnected or cut for example, it becomes an open circuit and no electricity will flow.

You would measure the amount of resistance at a certain point in a circuit with a(n):

78% Answer Correctly

	potentiometer
	ammeter
	voltmeter
	ohmmeter

Solution

Resistance is opposition to the flow of current and is measured in ohms (Ω). An ohmmeter is used to measure the amount of resistance at a certain point in a circuit.