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

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
The purpose of embedding the damper winding in the pole face of a synchronous motor is to

Reduce winding losses
Reduce bearing friction
Eliminate losses on account of fair friction
Eliminate hunting and provide adequate starting torque

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP
MORE MCQ ON DGVCL Exam Paper (11-12-2011)