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Electric Circuits

Electric Circuits
Which of the following has no units?

 Moment of a magnet
 Magnetic susceptibility
 Permittivity
 Permeability

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Electric Circuits
Sulphation in a lead acid battery occurs due to

 fast charging.
 heavy charging.
 trickle charging.
 incomplete charging.

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Electric Circuits
The lead acid cell should not never be discharged beyond

 2 V.
 2.1 V
 1.9 V.
 1.8 V.

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Electric Circuits
Efficiency of electrical machines should be calculated by measuring

 losses.
 losses and input.
 output and input.
 losses and output.

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Electric Circuits
Reactive power drawn by a pure resistor is

 0
None of these
 minimum
 maximum

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Electric Circuits
Time constant is the time taken for response to rise -------of maximum value?

 100%
 90%
 68.3%
 63.2%

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