Electric Circuits
What is called the frequency in AC operation?

 No. of (-) ve quadrature made per second.
 No. of wave made per second.
 No. of cycles made per second.
 No. of (+) ve quadrature made per second.

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Electric Circuits
Pure metal generally have

  low conductivity and high temperature coefficient.
  high conductivity and low temperature coefficient.
  high conductivity and large temperature coefficient.
  low conductivity and zero temperature coefficient.

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