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Electric Circuits

Electric Circuits
The life of a lead acid battery is expected to be

 10 to 15 years.
 6 months.
 1 year.
 2 to 5 years.

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Electric Circuits
The capacitance of a parallel plate capacitor can be varied by

 changing the distance between the plates only.
 changing the overlapping area of the plates only.
 changing the dielectric medium only.
All of these

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Electric Circuits
A wire 2.5 m long is bent into a square. An current of 100 A flowing through the wire will produce a magnetizing force at the center of the square, equal to

 196 AT / m.
 72 AT / m.
 222 AT / m.
 144 AT / m.

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Electric Circuits
If P is the power of a star connected system then what will be power of an equivalent delta connected system?

 P/3
None of these
 P
 3P

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Electric Circuits
The value of V in the circuit shown in the given figure is

 4 V.
  2 V.
 5 V.
  3 V.

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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

 15.
 105.
 60.
 75.

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MORE MCQ ON Electric Circuits

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