SSC JE Electrical 2018 with solution SET-1
In a synchronous Motor, the damping winding is generally used to

Reduces the eddy current
Provide starting torque
Prevent hunting and provide starting Torque
Reduces the Noise Level

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SSC JE Electrical 2018 with solution SET-1
 If the field of a DC shunt motor gets opened while the motor is running, then the

Motor will become slow
Armature will oscillate about original speed as the mean speed
The motor will attain the dangerously high speed
Armature current will drop

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SSC JE Electrical 2018 with solution SET-1
 Determine the percentage voltage error of a potential transformer with the system voltage of 11000 V and having a turn’s ratio of 104 if the measured secondary voltage is 98 V

8.84
5.75
6.25
7.92

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SSC JE Electrical 2018 with solution SET-1
 On which of the following parameters the eddy current loss occurring in a material does not depend?

Magnetic flux Density
The frequency of variation of flux
Susceptibility
The volume of the material

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