Electric Circuits
Addition of which of the following substance in electrolyte helps in producing bright finish?

 Phenol.
 Any of above.
 Glycerine.
 Dextrol.

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Electric Circuits
What is referred as the average value in AC opearation?

  Average of all values of an alternating quantity over a complete cycle.
 Average of all values of the phase sequences.
 Average of all values of the (+)ve and (-)ve half.
 Average of all values of an alternating quantity.

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