ASVAB Electronics Information Practice Test 346066 Results

	Your Results	Global Average
Questions	5	5
Correct	0	3.62
Score	0%	72%

Review

1 Use Ohm's Law to calculate the value of voltage in this circuit if resistance is 60 Ω and current is 6 amps.

85% Answer Correctly

	396 V
	360 V
	540 V
	361.5 V

Solution

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

V = \( I \times R \) = \( 6 \times 60 \) = 360 V

An engineer who wants to document an electric circuit would create which of the following?

67% Answer Correctly

	a schematic
	a blueprint
	a matrix
	a layout

Solution

A schematic is the proper name for a drawing of an electric or electronic circuit.

3 A circuit with a 120-volt power supply is protected by a 15-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?

82% Answer Correctly

	1802 W
	1620 W
	1800 W
	1809 W

Solution

Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 15A circuit breaker would allow is 120V x 15A = 1800 W.

Which of the following is not a characteristic of a step-up transformer?

54% Answer Correctly

	the secondary voltage is higher than the primary voltage
	the primary voltage is higher than the secondary voltage
	increases voltage
	has more turns in the secondary winding than in the primary winding

Solution

As their names indicate, a step-up transformer is used to step up or increase voltage and a step-down transformer is used to step down or decrease voltage. In a step-up transformer, the secondary voltage is higher than the primary voltage and it has more turns in the secondary winding than in the primary winding.

Longer the electrical wires mean _______________ voltage drop.

73% Answer Correctly

	diminishing
	greater
	complete
	lesser

Solution

Electrical wires have a certain amount of resistance per foot. A longer wire means more resistance and a greater voltage drop.