ASVAB Electronics Information Practice Test 599686 Results

Your Results Global Average
Questions 5 5
Correct 0 3.10
Score 0% 62%

Review

1 Use Ohm's Law to calculate the value of resistance in this circuit if voltage is 120 volts and current is 4 amps.
80% Answer Correctly
27 Ω
31.5 Ω
32 Ω
30 Ω
Solution

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

Solved for resistance, R = \( \frac{V}{I} \) = \( \frac{120}{4} \) = 30 Ω

2

General current flow in a transistor is from __________ to __________.

51% Answer Correctly

base, collector

collector, base

base, emitter

collector, emitter
Solution

The transistor is the foundation of modern electronic devices. It is made entirely from semiconductor material (making it a solid state device) and can serve many different functions in a circuit including acting as a switch, amplifier, or current regulator. 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.

3 Suppose you have 8 [6V 25A] batteries that you can connect together in series, in parallel, or in series-parallel. Which of the following voltage and ampere combinations cannot be attained using these 8 batteries?
46% Answer Correctly
48V 25A
96V 400A
24V 100A
6V 200A
Solution

Connecting the 8 batteries in series multiplies their voltage while keeping their current the same yielding a 48V 25A configuration. Connecting the 8 batteries in parallel multiplies their current while keeping their voltage the same yielding a 6V 200A configuration. Using a series-parallel connection, 4 batteries can be connected in series and 4 can be connected in parallel resulting in a 24V 100A configuration.

4

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

78% Answer Correctly

ammeter

voltmeter

potentiometer

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.

5

A solid state device has which of the following characteristics?

53% Answer Correctly

made entirely from conductive material

made entirely from insulative material

made entirely from semiconductor material

made from a mix of conductive and insulative material
Solution

The transistor is the foundation of modern electronic devices. It is made entirely from semiconductor material (making it a solid state device) and can serve many different functions in a circuit including acting as a switch, amplifier, or current regulator. 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.