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Electric Circuits

Electric Circuits
What is the unit of potential difference ?

 Watt
 Ohm
 Ampere
 Volt

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Electric Circuits
Unit step function is first derivative of

 ramp function.
 gate function.
 parabolic function.
 impulse function.

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Electric Circuits
Which of following is the unit of magnetic flux density?

 Lumens.
 Tesla.
 Daraf.
 Weber.

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Electric Circuits
From the given figure find the R3

 25 mega ohm
 25 kilo ohm
 25 mili ohm
 25 ohm

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Electric Circuits
Two equal resistors R connected in series across a voltage source V dissipate power P. What would be the power dissipated in the same resistors when they are connected in parallel across the same voltage source?

  P.
 16P.
 2P.
 4P.

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Electric Circuits
Total instantaneous power supplied by a 3 - φ AC supply to a balanced RL load is

 constant.
 zero.
 pulsating with zero average.
 pulsating with non zero average.

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