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Electric Circuits

Electric Circuits
Which of the following is not a bilateral element?

 Inductor.
 Resistor.
 Capacitor.
 Diode.

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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

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

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Electric Circuits
Silver coating is provided for

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

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Electric Circuits
Electro-chemical equivalent is usually expressed in

  mg per volt.
  mg per kVA.
  mg per coulomb.
  mg per kW.

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Electric Circuits
What is apparent power in AC operation?

 Product of rms voltage and rms current.
 Product of voltage and current at full load.
 Product of voltage and current at no load.
 Product of voltage and current.

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Electric Circuits
For cadium plating electrolyte used is

 sodium cyanide, cadmium and caustic soda.
 cadmium hexa metaphosphate.
 cadmium sulphate and sulphuric acid.
 any of above.

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