ASVAB Electronics Information Practice Test 423495 Results

Your Results Global Average
Questions 5 5
Correct 0 3.59
Score 0% 72%

Review

1

This circuit diagram represents a(n):

69% Answer Correctly

open circuit

series circuit

parallel circuit

series-parallel circuit
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.

2 A circuit with a 120-volt power supply is protected by a 25-amp circuit breaker. What is the largest number of watts loads on this circuit can safely use?
84% Answer Correctly
1500 W
2997 W
3000 W
9000 W
Solution
Wattage is current multiplied by voltage: W = IV. So, the maximum amount of power a 120-volt circuit with a 25A circuit breaker would allow is 120V x 25A = 3000 W.
3

In a series circuit, which of the following is the same across all branches of the circuit?

61% Answer Correctly

current

resistance

conductance

voltage
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.

4

The conversion of alternating current (AC) into direct current (DC) is called:

69% Answer Correctly

rectification

inductance

capacitance

reactance
Solution

A diode allows current to pass easily in one direction and blocks current in the other direction. Diodes are commonly used for rectification which is the conversion of alternating current (AC) into direct current (DC). Because a diode only allows current flow in one direction, it will pass either the upper or lower half of AC waves (half-wave rectification) creating pulsating DC. Multiple diodes can be connected together to utilize both halves of the AC signal in full-wave rectification.

5

The formula specifying Ohm's law is which of the following?

77% Answer Correctly

\(V = {R \over I}\)

V = IR

V = I2R

\(V = {I \over R}\)
Solution

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