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Electric Circuits

Electric Circuits
In which braking back emf exceeds supply voltage?

  Plugging.
  None of these.
  Dynamic.
  Regenerative.

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Electric Circuits
Galvanizing is the coating of

 brass.
 zinc.
 lead.
 chromium.

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Electric Circuits
While comparing magnetic field and electric circuits, the point of dissimilarity exists while considering

 reluctance and resistance.
 permeance and conductance.
 mmf and emf.
 flux and current flow.

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Electric Circuits
A capacitor is charged by a constant 10 mA current sources which is turned on for 1 second. Assuming the capacitor is initially charge free; determine the charge delivered to and the power supplied by the source if the capacitor has a value of 1 mF.

 0.1C, 10MW.
 0.1C, 100MW.
 0.01C, 10MW.
 0.01C and 5W.

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Electric Circuits
If the peak value of a sine wave is 100 V, then its RMS value will be

 63.6 V.
 88 V.
 100 V.
 70.7 V.

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Electric Circuits
In a capacitive circuit, the capacitive reactance is

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

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