ASVAB Electronics Information Practice Test 346419 Results

	Your Results	Global Average
Questions	5	5
Correct	0	2.84
Score	0%	57%

Review

What is the voltage of most household electrical systems in the United States?

59% Answer Correctly

	220V
	110V
	60V
	60Hz

Solution

Most households use electricity with a voltage of 110V.

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

42% Answer Correctly

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

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.

3 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 90 Ω and current is 6.5 amps.

85% Answer Correctly

	643.5 V
	1755 V
	585 V
	877.5 V

Solution

Ohm's law specifies the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit: V = IR.

V = \( I \times R \) = \( 6.5 \times 90 \) = 585 V

4 How would you connect 8 [9V 15A] batteries to achieve a combined power output of 9V 120A?

52% Answer Correctly

	parallel
	perpendicular
	orthogonal
	series

Solution

Connecting the 8 batteries in series multiplies their voltage while keeping their current the same yielding a 72V 15A configuration. Connecting the 8 batteries in parallel multiplies their current while keeping their voltage the same yieleding a 9V 120A configuration. Using a series-parallel connection, 4 batteries can be connected in series and 4 can be connected in parallel resulting in a 36V 60A configuration.

Capacitors connected in series produce __________ capacitance compared to capacitors connected in parallel.

46% Answer Correctly

	the same
	more
	less
	no

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 connected in series produce less capacitance than capacitors connected in parallel.