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Electric Circuits

Electric Circuits
In direct arc furnace which of following is of high value?

 Power factor.
 All of above.
 Current.
 Voltage.

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Electric Circuits
Specific resistance is measured in

  mho.
  ohm.
  ohm/cm.
  ohm - cm.

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Electric Circuits
Which variety of copper has the best mechanical strength ?

  Soft copper.
  Annealed copper.
  Cast copper.
  Hard drawn copper.

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

 Diode.
 Resistor.
 Inductor.
 Capacitor.

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Electric Circuits
The capacitive reactance of a capacitor of (1 / 2μF) F at 103 Hz is

 10- 6 μF.
 10 6 μF.
 10- 3 μF.
 10 3 μF.

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Electric Circuits
One atomic mass unit ( amu ) is approximately equal to

 1.6 × 10-13 Kg.
 1.6 × 10-24 Kg.
 1.6 × 10-19 Kg.
  1.6 × 10-27 Kg.

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