SSC JE Electrical 2018 with solution SET-1
 Determine the reluctance (in Amp-turns/Wb) of a coil, when the flux through the coil is 15 Wb and the produced MMF is 30 Amp-turns

3
1
2
4

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SSC JE Electrical 2018 with solution SET-1
Direct resistance Heating is used in

Electrode Boiler
Salt-Bath furnace
Resistance Welding
All of these

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SSC JE Electrical 2018 with solution SET-1
 A zero watt Lamp consumes

About 25 to 30 W  Power
No power
About 15 to 20 W power
About 5 to 7 W power

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

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

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SSC JE Electrical 2018 with solution SET-1
 A three-phase synchronous motor will have

Two slip-rings
One slip-ring
No slip-rings
Three slip-rings

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