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Electric Circuits

Electric Circuits
The value of supply voltage for 400 W, 4 Ω load is

 200 V.
 20 V.
 400 V.
 40 V.

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Electric Circuits
Which of the following is the different one in terms of measurements?

 RC
 Q
 2L/R
 L/R

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Electric Circuits
In series R, L circuit power factor can be defined as

 R/Z
 P/S
All of these
 Vr/V

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Electric Circuits
Efficiency of electrical machines should be calculated by measuring

 losses and output.
 losses and input.
 output and input.
 losses.

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Electric Circuits
The capacitive reactance of a capacitor of (1 / 2μF) F at 103 Hz is

 10- 6 μF.
 10 6 μF.
 10- 3 μF.
 10 3 μF.

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Electric Circuits
A external resistance R is connected to a cell of internal resistance r, then the current is maximum when

None of these
 R > r.
 R < r.
 R = r.

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