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Electric Circuits

Electric Circuits
Which of the following ABCD parameters is unit less?

 A and D.
 A and C.
 B and C.
 A and B.

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Electric Circuits
In a lead acid cell PbSO4 formed during

  charging only.
  both during charging as well as discharging.
  discharging only.
  neither during charging nor discharging.

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Electric Circuits
What is the dielectric material used in precision small value capacitor and capacitor used in radio frequency circuits?

 Titanium oxide.
 Oil impregnated paper.
 Vacuum, air.
 Glass.

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Electric Circuits
Cells are connected in parallel in order to increase

 voltage rating.
 efficiency.
 current capacity.
 life of the cells.

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Electric Circuits
For Norton’s equivalent circuit

 Voc = Isc / Req.
 Isc = Voc / Req.
 Isc = Voc Req.
 Voc = Req /Isc.

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Electric Circuits
2) Two sinusoidal emfs are given as e1 = Asin(wt+45) and e2 = Bsin(wt-30). The phase difference between the two quantities in degrees is

 75.
 105.
 60.
 15.

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