SSC JE Electrical 2018 with solution SET-1
 A hysteresis Motor

Is not a self-starting motor
Is a constant speed motor
Need DC excitation
Can not be run in reverse speed

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SSC JE Electrical 2018 with solution SET-1
 A 40KVA transformer has a core loss of 450 W and total loss of 800 W. Find the copper loss for Maximum efficiency

350 W
300 W
450 W
800 W

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SSC JE Electrical 2018 with solution SET-1
A DC generator used for ARC welding should Have

Straight characteristics
Dropping Characteristics
Rising characteristics
None of these

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

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

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