SSC JE Electrical 2018 with solution SET-1
The motor used on a small lathe is usually

Universal Motor
3-Phase Synchronous Motor
D.C shunt Motor
Single-phase capacitor run Motor

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SSC JE Electrical 2018 with solution SET-1
 Starting winding of a single-phase motor of a refrigerator is disconnected from the circuit by means of a

Centrifugal Switch
Magnetic Relay
None of these
Thermal Relay

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SSC JE Electrical 2018 with solution SET-1
 What will be the voltage (in V) across an 8H inductor, when the rate of change of current flowing through it is 0.5A/sec

4
6
2
8

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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

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

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