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Electric Circuits

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

 40 V.
 200 V.
 400 V.
 20 V.

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Electric Circuits
Efficiency of electrical machines should be calculated by measuring

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

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Electric Circuits
Which of the followings is the expression for energy stored in a capacitor?

 Cv.
 C / v.
 (1 / 2) Cv2.
 C dv / dt.

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Electric Circuits
If Vout = 1 V for 1 kHz input then what would be Vout for 10 kHz for same input ?

 None of these.
  1 V.
 0.01 V.
 0.1 V .

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Electric Circuits
When the internal resistance of a cell is large compared to the external resistance in the circuit then high current can flow through the external resistance by grouping the cells

 in parallel.
 in either series or parallel.
 as in series.
 mixed.

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Electric Circuits
In a capacitive circuit, the capacitive reactance is

 indirectly proportional to the square of frequency
 directly proportional to the square of frequency
 indirectly proportional to frequency
 directly proportional to frequency

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MORE MCQ ON Electric Circuits

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