DGVCL Exam Paper (11-12-2011)
Ybus used in power flow studies and Zbus used in short circuit studies

Are the same
Are transpose of each other
Have no inter relation
Are inverse of each other

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

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

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