DGVCL Exam Paper (11-12-2011)
Under operating conditions, the secondary of a current transformer is always short ciruited because

It is safe to human beings
It avoids core saturation and high voltage induction
It protects the secondary ciruits
It protects the primary ciruits

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DGVCL Exam Paper (11-12-2011)
The motor used in celling fans is

Capacitor start capacitor run motor
Capacitor start motor
Universal motor
Split phase motor

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DGVCL Exam Paper (11-12-2011)
The main advantage of using fractional pitch winding is to refuce

Size of the machine
Harmonics in the generated emf
Amount of copper in the winding
Cost of the machine

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