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Electric Circuits

Electric Circuits
If one cycle of AC waveform occurs every millisecond, the frequency will be

 100 Hz.
 1000 Hz.
 10 kHz.
 50 Hz.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The voltage drop across L is

 50.5 V.
  39.1 V.
 45.5 V.
  31.9 V.

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Electric Circuits
In series RLC circuit to get Q>1, which of the following is required?

 XL = R
 XL > R
All of these
 XL < R

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Electric Circuits
Reactive power drawn by a pure resistor is

 0
None of these
 maximum
 minimum

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Electric Circuits
When AC flows through a pure capacitance then the current

 leads the emf by - 90o.
 leads the emf by 90o.
 lags the emf by 90o.
 is in phase with emf.

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Electric Circuits
The current in the resistor R shown in figure will be

 0.8 A.
 0.6 A.
 0.2 A.
 0.4 A.

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MORE MCQ ON Electric Circuits

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