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Electric Circuits

Electric Circuits
Which of the following are the passive elements?

 None of these.
 Resistor
 Bulb
 Both

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Electric Circuits
Container of a lead acid battery

 any of above.
 celluloid.
 molded hard rubber.
 ceramics.

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

 Power factor.
 Voltage.
 Current.
 All of above.

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Electric Circuits
Air gap flux density is of the order of

  0.35 - 0.5 T.
  0.65 - 0.9 T.
 0.75 - 0.8 T.
 0.85 - 0.9 T.

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Electric Circuits
Time constant of RC series circuit is

 RC
 2RC
 L/R
 2L/R

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Electric Circuits
If all the elements in a particular network are linear, then the superposition theorem would hold, when the excitation is

 Either AC or DC
 An Impulse
 DC only
 AC only

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MORE MCQ ON Electric Circuits

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