ALTERNATING CURRENT FUNDAMENTALS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024

ALTERNATING CURRENT
FUNDAMENTALS QUESTIONS AND
ANSWERS WITH SOLUTIONS 2024
The __________ of an AC power source changes periodically. - ANSWER Polarity



List the three requirement for inducing a voltage. - ANSWER - Conductor

- Magnetic field

- Relative motion



When a conductor rotating in a magnetic field is cutting through the maximum number of flux lines: -
ANSWER Maximum voltage is induced



When a sine wave is used to represent voltage, voltage below the horizontal line is negative. - ANSWER
True



The number of cycles completed each second by a given AC voltage is called __________ and is
measured in __________. - ANSWER Frequency and hertz



The letters used to express effective AC values are __________. - ANSWER RMS



The physical property of all AC circuits that opposes any change in __________ is called inductance. -
ANSWER Current flow



__________ is the measure of the opposition to current flow that is created by inductance. - ANSWER
Inductive reactance



When current flowing through a conductor is increasing: - ANSWER The magnetic field around the
conductor is building up



When CEMF opposes the applied voltage in an AC circuit, it has the effect of increasing current. -
ANSWER False. Limiting current