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Electric Circuits

Electric Circuits
In series RLC circuit what is the power factor just bellow the resonance frequency?

 Unity
 Lagging
 Leading
 Zero

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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 R is

 24.4 V .
  50.8 V.
  30.6 V.
 40.8 V.

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Electric Circuits
Capacitor does not allow the sudden change of

None of these
 current
 power
 voltage

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Electric Circuits
From the circuit diagram shown in question 1 find the thevnin voltage.

 1.5 V.
 15 V.
 3 V.
 5 V.

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Electric Circuits
A current of 1 mA flows through a 1M ohm, 2 W carbon resistor. The power dissipated as heat in the resistor will be

 0.5 W.
None of these
 2 W.
 1 W.

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Electric Circuits
Time constant of RL series circuit is

 2RC
 L/R
 2L/R
 RC

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