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Electric Circuits

Electric Circuits
Which of the following has positive temperature coefficient ?

  Gold.
  Rubber.
  Germanium.
  Paper.

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Electric Circuits
What is Va in the below circuit?

 (4R + 10) / 3.
 (6R + 10) / 3.
 (6R - 10) / 3.
 (3R + 10) / 3.

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Electric Circuits
In RLC parallel circuit if current through capacitor and inductor is equal. Then What is the power factor?

 zero
 unity
 leading
 lagging

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Electric Circuits
If conductance increases as temperature increases it is called as ..........

 positive co-efficient.
 both 1 and 2.
None of these
 negative co-efficient.

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Electric Circuits
Three resistances of two ohms each are connected in star. In the equivalent delta representation each resistance will have a value of _______________ Ω.

 0.6.
 3.4.
 6.
 5.2.

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Electric Circuits
Which of following capacitor will have least value of breakdown voltage?

 Ceramic.
 Electrolytic.
 Mica.
 Paper.

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