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AC Fundamentals, Circuit and Circuit Theory

AC Fundamentals, Circuit and Circuit Theory
The apparent power drawn by an A.C. circuit is 10 kVA and active power is 8 kW. The reactive power in the circuit is

10 kVAR
8 kVAR
16 kVAR
12 kVAR

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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 current in each section equal to the line current
Have a high impedance

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AC Fundamentals, Circuit and Circuit Theory
Inductance affects the direct current flow

At the time of turning on and off
Only at the time of turning off
Only at the time of turning on
At all the time of operation

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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.

60
30
45
90

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AC Fundamentals, Circuit and Circuit Theory
In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will

Be four times at high
Be reduced to one fourth
Be reduced by half
Be doubled

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AC Fundamentals, Circuit and Circuit Theory
In a series resonant circuit, the impedance of the circuit is

None of these
Zero
Minimum
Maximum

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