SSC JE Electrical 2019 with solution SET-1
 If the copper loss of a transformer at half full load is 400 W, then the copper loss corresponding to full load is

1600 W
1200 W
400 W
800 W

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SSC JE Electrical 2019 with solution SET-1
 In a single-phase capacitor start-and-run motor, the minimum number of capacitors to be used in it is:

1
3
4
2

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SSC JE Electrical 2019 with solution SET-1
 What is the reason behind using a centrifugal switch in a single-phase induction motor?

To cut-off the starting winding at an appropriate instant
To improve the starting performance of the motor
To protect the motor from overloading
To out in the capacitor during running conditions

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SSC JE Electrical 2019 with solution SET-1
 Lamp efficiency is measured in

Lumen/lux
Candela/watt
Lumen/watt
Lux/watt

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