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Electric Circuits

Electric Circuits
Current magnification will occur in which of the following case?

 Series resonance
 Both
 Parallel resonance
None of these

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Electric Circuits
Three element having conductance G1, G2 and G3 are connected in parallel. Their combined conductance will be

 (G1 + G2 + G3) - 1.
 (1 / G1 + 1 / G2 + 1 / G3) - 1.
 G1 + G2 + G3.
 1 / G1 + 1 / G2 + 1 / G3.

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

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Electric Circuits
Which of the following is not equivalent to watts?

 Joules per second.
 Ampere-volts.
 Ampere2 – Ohm.
 Amperes/volt.

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Electric Circuits
Transients are presents in the circuit when the circuit is having

 C.
 R.
 Either L or C.
 L.

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Electric Circuits
Silver coating is provided for

  decorative purpose.
  all of above.
  protective purpose.
  bearing surfaces.

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