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Electric Circuits

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

 s(1-e-as).
 e-as.
 se-as.
 (e-as)/s.

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Electric Circuits
If P is the power of a star connected system then what will be power of an equivalent delta connected system?

 3P
None of these
 P
 P/3

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Electric Circuits
Advantage of active filter is

  derive high impedance load.
  easy to tune.
  both of above.
  do not offer gain.

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Electric Circuits
In which of the circuits power factor can be zero?

 inductive.
 both ‘a’ and ‘b’
 resistive.
 capacitive.

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Electric Circuits
Galvanizing is the coating of

 lead.
 brass.
 zinc.
 chromium.

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Electric Circuits
Which part of magnetic path requires largest mmf?

 Air gap.
 Coil.
 Inductance.
 Core.

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MORE MCQ ON Electric Circuits

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