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

None of these
Thermal Relay
Centrifugal Switch
Magnetic Relay

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SSC JE Electrical 2018 with solution SET-1
 Scott connections are used for

Three-phase to two-phase transformation
Single-phase to three-phase transformation
Three Phase to Single Phase transformation
Any of the above

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SSC JE Electrical 2018 with solution SET-1
 For a dc machine shunt resistance and armature resistance values are

Low and High
High and Low
Low and Low
High and High

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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
450 W
300 W
800 W

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