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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
At very low frequencies a series R-C circuit behaves as almost purely

None of the listed here
Resistive
Inductive
Capacitive

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AC Fundamentals, Circuit and Circuit Theory
The equation of 50 Hz current sine wave having r.m.s. value of 60 A is

60 sin 25 t
42.42 sin 314 t
60 sin 50 t
84.84 sin 3141

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

Voltage
Frequency
Power
Current

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AC Fundamentals, Circuit and Circuit Theory
For a sine wave with peak value Imax the r.m.s. value is

0.707
1.414 Imax
0.5 Imax
0.9

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

The current is in phase with the voltage
The current can lead or lag by 90°
The current lags behind the voltage by 90°
The current leads the voltage by 90°

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AC Fundamentals, Circuit and Circuit Theory
The form factor is the ratio of

r.m.s. value to average value
Peak value to r.m.s. value
None of these
Average value to r.m.s. value

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