Comprehensive Electrical Quiz

Which of the following is the letter commonly used for representing electrical potential?

• A

• P

• V

• W

At which of the following degrees on a sine wave is the voltage at its maximum positive value?

• 0

• 90

• 180

• 270

A value of AC voltage that is measured from the maximum value in the positive direction to the maximum value in the negative direction is called the _ value.

(a)  

An AC volt meter reading an applied voltage of 120 volts. What is the average voltage?

• 77.8 volts

• 108 volts

• 122.2 volts

• 155.5 volts

• None

Which diagram in the figure below shows the correct relationship between the voltage and current sine waves for a purely inductive AC circuit?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Which diagram in the figure below shows the correct relationship between the voltage and current sine waves for a capacitive circuit.

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Which diagram in the figure below shows the correct relationship between the voltage and current vectors for a purely resistive AC circuit?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

Alternating current flowing through an inductor is opposed by resistance and _.

• capacitance

• conductance

• inductance

• reactance

In a purely inductive circuit, the current _ the applied voltage by 90 degrees.

• lags

• leads

• coincides

• is equal to

Whenever current flows through a conductor, a(n) _ field is created around the conductor.

• electromotive

• inductive

• magnetic

• reactive