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Electric Circuits

Electric Circuits
In the above question find the angle between voltage and current?

 60.
 54.74.
 90.
 30.

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Electric Circuits
The instantaneous values of line current into a delta connected load in any two lines are + 2.5 amps and - 1.25 amps the current in the third line at the instant is ___________ A.

 2.5
 10
 1
 - 1.25

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Electric Circuits
A ceramic and a mica capacitor have the same physical dimension. Which has the higher value of capacitance?

  It is impossible to conclude on the basis of information supplied.
 Mica capacitor.
 Ceramic capacitor.
 Both have identical value of capacitor.

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Electric Circuits
The time required for a pulse to change from 10 % to 90 % of its maximum value is known as

 fall time.
 rise time.
 decay time.
 run time.

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Electric Circuits
An electrical motor has rating of 10 MVA at 0.8 lag, represented as series RL circuit at a 50 MVA base. Find the impedance value?

 (4 + j2 ) pu
 (3 + j4) pu
 (4 + j3) pu
 (2 + j4) pu

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Electric Circuits
To obtain high efficiency, network is designed with which of the following?

 Low Q factor
 Zero Q factor
 Unity Q factor
 High Q factor

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MORE MCQ ON Electric Circuits

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