ASVAB Electronics Information Practice Test 51123 Results

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

Review

Using a fuse with a current rating higher than that required by a circuit:

70% Answer Correctly

	is recommended
	makes no difference
	is required
	makes the circuit less safe

Solution

A fuse is a type of low resistance resistor that stops current flow in a circuit in response to a larger than intended electric current flow. Using a fuse with a higher current rating than required by a circuit is less safe as it could potentially allow overcurrent and risk a fire or heat-related equipment damage.

2 Use Ohm's Law to calculate the value of current in this circuit if voltage is 90 volts and resistance is 60 Ω.

80% Answer Correctly

	2.25 A
	1.5 A
	1.65 A
	4.5 A

Solution

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

Solved for current, I = \( \frac{V}{R} \) = \( \frac{90}{60} \) = 1.5 A

Which of the following is not a terminal on a transistor?

59% Answer Correctly

	collector
	base
	emitter
	input

Solution

A transistor works by allowing a small amount of current applied at the base to control general current flow from collector to emitter through the transistor.

In metals, increasing the temperature typically _____________ conductivity.

50% Answer Correctly

	increases
	does nothing to
	eliminates
	decreases

Solution

All conductors have resistance and the amount of resistance varies with the element. Metals exhibit increased resistance (and, therefore, lower conductivity) as their temperature increases.

The sum of the voltage drops across each resistor in a __________ circuit will equal the total voltage applied to the circuit.

54% Answer Correctly

	series
	closed
	series-parallel
	parallel

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.