DGVCL Exam Paper (11-12-2011)
Bulk power transmission over long HVDC lines are preferred on account of

Simple protection
Minimum line power losses
No harmonic problems
Low cost of HVDC terminals

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DGVCL Exam Paper (11-12-2011)
The purpose of skewing of rotor slots in an induction motor is

To increase the distributuion factor
To reduce the locking tendency of the rotor
To reduce the magnetic hum of the motor
To increase the breadth factor

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