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Electric Circuits

Electric Circuits
Current magnification will occur in which of the following case?

None of these
 Both
 Series resonance
 Parallel resonance

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Electric Circuits
Which of the following are typical resistance and power-dissipation values for a carbon-composition resistor?

 10000 ohms, 10 W.
 5000 ohms, 100W.
 10 ohm, 50 W.
 1000000 ohms, 1 W.

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Electric Circuits
A 100 μF capacitor supplied from 3 V source with a frequency of 50 Hz. The capacitive reactance is

 63.68 Ω.
 15.92 Ω.
 31.84 Ω.
 7.96 Ω.

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Electric Circuits
An electrical motor has rating of 10 MVA at 0.8 lag, represented as series RL circuit at a 50 MVA base. Find the impedance value?

 (2 + j4) pu
 (3 + j4) pu
 (4 + j2 ) pu
 (4 + j3) pu

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

 1.5 V.
 3 V.
 15 V.
 5 V.

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Electric Circuits
The internal resistance of a practical voltage source is considered to be connected in

None of these
 series.
 either parallel or series.
 parallel.

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MORE MCQ ON Electric Circuits

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