DGVCL Exam Paper (11-12-2011)
A Mho relay is a

Voltage restrained directional relay
Directional restrained over current relay
Directional restrained over voltage relay
Voltage controlled over current relay

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DGVCL Exam Paper (11-12-2011)
Hysteresis in an instrument means

The change in the same reading when the input is first increased and then decreased
The inaccuracy due to change in temperature
The reliability of the instrument
The repeatability of the instrument

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

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