ASVAB Electronics Information Practice Test 230116 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.18
Score	0%	64%

Review

In an electronic circuit, a thermocouple can be used to:

42% Answer Correctly

	keep the circuit at a designated safe temperature
	increase or decrease the temperature of a component in the circuit
	link the temperature of one component in the circuit to that of another component in the circuit
	open or close a circuit at a designated temperature

Solution

A thermocouple is a temperature sensor that consists of two wires made from different conductors. The junction of these two wires produces a voltage based on the temperature difference between them and can be used like a switch to open or close the circuit at a designated temperature.

2 A circuit with a 120-volt power supply is protected by a 5-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

82% Answer Correctly

	1200 W
	598 W
	602 W
	600 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 5A circuit breaker would allow is 120V x 5A = 600 W.

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

68% Answer Correctly

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

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.

Which of the following converts electrical energy into another form of energy in an electrical circuit?

61% Answer Correctly

	wiring
	AC source
	load
	DC source

Solution

A load is a source of resistance that converts electrical energy into another form of energy. The components of a microwave, for example, are loads that work together to convert household electricity into radation that can be used to quickly cook food.

Direct current flows from the __________ terminal of the voltage source to the __________ terminal.

62% Answer Correctly

	negative, negative
	positive, positive
	positive, negative
	negative, positive

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.