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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
Form factor for a sine wave is

1.414
1.11
0.637
0.707

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AC Fundamentals, Circuit and Circuit Theory
The purpose of a parallel circuit resonance is to magnify

Voltage
Frequency
Current
Power

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AC Fundamentals, Circuit and Circuit Theory
In each of the three coils of a three phase generator, an alternating voltage having an r.m.s. value of 220 V is induced. Which of the following values is indicated by the voltmeters?

220 V
220/v3 V
220 v3 V
None of these

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AC Fundamentals, Circuit and Circuit Theory
Form Factor is the ratio of

Average value/r.m.s. value
r.m.s. value/peak value
Average value/peak value
r.m.s. value/average value

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AC Fundamentals, Circuit and Circuit Theory
The time constant of a series R-C circuit is given by

R2C
RC
R/C
RC2

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AC Fundamentals, Circuit and Circuit Theory
In a pure resistive circuit

Current lags behind the voltage by 90°
Current can lead or lag the voltage by 90°
None of the listed here
Current is in phase with the voltage

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