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Electric Circuits

Electric Circuits
Condition of symmetry in ABCD parameter representation is

 C = D.
 B = D.
 AD - BC = 1.
 A = D.

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Electric Circuits
For the network shown below when I = 0, V = 20 V and when R = 0, I = 10 A. If now R = 3 Ω what is the value of the current I?

 10 A.
 6 A.
 4 A.
 5 A.

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Electric Circuits
A balanced star connected load with impedance of 30j - 300 Ω is supplied from a 3 - phase, 4-wire, 173 V system, the voltages to neutral being 100j -900, 100j - 300 and 100j -1500 V. The current in neutral wire is

  50 A.
  8.85 A.
  zero.
  5 A.

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Electric Circuits
Which of the following elements is/are called dynamic element/s?

 R.
 C.
 L.
 Both L and C.

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Electric Circuits
A balanced three Phase Y-connected load has one phase voltage VB = 277∠45o V. The phase sequence is RYB. The line to line voltage VRY is

 339∠45o V.
 480∠ - 45o V.
 480∠45o V.
 339∠- 45o V.

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Electric Circuits
Unit of apparent power is

 VA.
 KWhr.
 VAR.
 Watts.

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MORE MCQ ON Electric Circuits

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