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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
Power factor of the following circuit will be unity

Inductance
Capacitance
Resistance
None of the listed here

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AC Fundamentals, Circuit and Circuit Theory
In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of

C only
R only
L only
L or C

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AC Fundamentals, Circuit and Circuit Theory
The r.m.s. value of a sinusoidal A.C. current is equal to its value at an angle of ________ degrees.

90
60
30
45

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

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

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AC Fundamentals, Circuit and Circuit Theory
Capacitors for power factor correction are rated in

kW
kVAR
kVA
kV

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

Non-oscillating
Sinusoidal
Oscillating
Square wave

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MORE MCQ ON AC Fundamentals, Circuit and Circuit Theory

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