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Electric Circuits

Electric Circuits
The linear circuit element is

 all of above.
 inductor.
 resistor.
 capacitor.

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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

  5 A.
  zero.
  8.85 A.
  50 A.

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Electric Circuits
While Thevenizing a circuit between two terminals, VTH is equal to

 open circuit terminal voltage .
 net voltage available in the circuit.
 none of these.
 short circuit terminal voltage.

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Electric Circuits
A capacitor has a capacitance of 6 μF. Calculate the stored energy in it if a DC voltage of 100 V, is applied across it?

 3 × 102 joules.
 6 × 102 joules.
 2.5 × 102 joules.
 4 × 102 joules.

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Electric Circuits
Image impedance can be written by using short circuit impedance(Zsc)and open circuit impedance(Zoc) as

  (Zsc . Zoc)½
 Zsc/Zoc
 Zsc+Zoc
 Zsc-Zoc

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Electric Circuits
Electrolyte for silver plating is

  dilute sulphuric acid.
  double cyanide of silver and potassium solution.
  potassium nitrate solution.
  any of above.

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