Electrical Engineering MCQs

Page No. 366

The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be


aR Ω


b2R Ω


c4R Ω


d8R Ω


View Answer 8R Ω

How many coulombs of charge flow through a circuit carrying a current of 10 A in 1 minute?


a10


b60


c600


d1200


View Answer 600

The unit of resistivity is


aΩ.


bΩ – metre.


cΩ / metre.


dΩ / m².


View Answer Ω – metre.

Instantaneous power in inductor is proportional to the


aproduct of the instantaneous current and rate of change of current.


bsquare of instantaneous current.


csquare of the rate of change of current.


dTemperature of the inductor.



The voltage induced in an inductor is represented as,


aproduct of its inductance and current through it.


bratio of its inductance to the current through it.


cratio of the current through it to its inductance


dproduct of its inductance and rate of change of current through it.



Magnetic flux has the unit of


aNewton


bAmpere-turn


cWeber


dTesla


View Answer Weber

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


aP


b3P


cP/3


dNone of the above


View Answer 3P

Which of the followings is/are active element?


aVoltage source


bCurrent source


cBoth


dNone of these.


View Answer Both

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