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

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

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

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DGVCL Exam Paper (11-12-2011)
An IDMT relay provides

A definite time cuttent characteristic
An inverse time current characteristic
An inverse characteristic for low values of the fault current and a definite time characteristic for high values of the fault current
A definite time characteristic for low values of the failt current and an inverse characteristic for high values of the fault current

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