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Electric Circuits

Electric Circuits
A paper capacitor is usually available in form of

 disc.
 tubes.
 rolled foil.
 meshed plates.

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Electric Circuits
Current locus is obtained by which of the following?

 Varying any one of the circuit element
 Either of these
 Varying source frequency
None of these

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Electric Circuits
Two resistances R1 and R2 give combined resistances 4.5 Ω and 1 Ω when they are connected in series and parallel respectively. What would be the values of these resistances?

 6 Ω and 9 Ω.
  1.5 Ω and 3 Ω.
  3 Ω and 6 Ω.
 3 Ω and 9 Ω.

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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
At which of the following frequency voltage across capacitor has maximum value for series circuit ?

 Equal to resonance frequency
 Less than resonance frequency
 Greater than resonance frequency
 Zero frequency

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Electric Circuits
Which of the following is the correct relation?

 AB-CD = 1 .
 all of these.
 AD-BC = 1.
 AC-BD = 1.

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MORE MCQ ON Electric Circuits

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