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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
For the same peak value, which of the following wave has the least mean value?

Half wave rectified sine wave
Triangular wave
Square wave
Sine wave

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AC Fundamentals, Circuit and Circuit Theory
The phosphors for which of the following pair are 180° out of phase for VL, VC and VR?

None of these
VL and VR
VC and VL
VC and VR

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AC Fundamentals, Circuit and Circuit Theory
A parallel AC. circuit in resonance will

Act like a resistor of low value
Have a high voltage developed across each inductive and capacitive section
Have a high impedance
Have current in each section equal to the line current

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AC Fundamentals, Circuit and Circuit Theory
In a loss-free R-L-C circuit the transient current is

Oscillating
Non-oscillating
Sinusoidal
Square wave

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AC Fundamentals, Circuit and Circuit Theory
The peak value of a sine wave is 200 V. Its average value is

282.8 V
141.4 V
200 V
127.4 V

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AC Fundamentals, Circuit and Circuit Theory
All definitions of power factor of a series R-L-C circuit are correct except

Ratio of net reactance and impedance
Ratio of J and Z
Ratio of kW and kVA
Ratio of W and VA

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