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Electric Circuits

Electric Circuits
The Laplace Transform of a shifted unit step f (t) = U (t-a) is

 se-as.
 (e-as)/s.
 e-as.
 s(1-e-as).

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Electric Circuits
The lead acid cell should not never be discharged beyond

 1.9 V.
 1.8 V.
 2 V.
 2.1 V

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Electric Circuits
In which braking back emf exceeds supply voltage?

  Regenerative.
  Dynamic.
  Plugging.
  None of these.

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Electric Circuits
A balanced 3 - φ star connected load is fed from a 208 V, 3 - φ supply. Each load has resistance of 35 Ω. The total power is

 1236 W.
 411.3 W.
 618 W.
 none of these.

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Electric Circuits
Which of following is invariably seen in an electroplating plant?

  Barrel.
  Carbon brushes.
  Rectifier.
  Distilled water.

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Electric Circuits
Highest current density is usually recommended for

  tin plating.
  bronze plating.
  chromium plating.
  cadmium plating.

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MORE MCQ ON Electric Circuits

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