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Electric Circuits

Electric Circuits
Active filter consists of

 op-amp and capacitor.
 op-amp.
 capacitor.
 inductor.

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Electric Circuits
Purpose of using capacitor is / are

 increase p.f of inductive load circuit.
 effect DC filter in electronic circuit.
 to do phase split in AC 1 phase motor.
 all of these.

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Electric Circuits
Which of the following theorems can be applied to any network- linear or nonlinear, active or passive, time variant or time invariant?

 Norton Theorem.
 Millman theorem.
 Thevnin theorem.
 Tellegen theorem.

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Electric Circuits
For balanced star load, if unbalanced line current are IR, IY, IB equal to - j10, - j10 and - j20 respectively, the neutral current will be equal to

  (-8.66 - j5) A.
  (-9.66 + j5) A.
  (8.66 - j5) A.
  (8.66 + j5) A.

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Electric Circuits
For occurrence of resonance which of the following elements are required?

 R
 L
 Both 2 and 3
 C

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Electric Circuits
What are the points to be mentioned in specifying main switches?

  Current rating.
  Both A and B.
  None of these.
  Voltage grade.

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MORE MCQ ON Electric Circuits

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