SSC JE Electrical 2019 with solution SET-2
A diode appears as in forward region of its characteristics?

An OFF switch
A high resistor
An ON switch
A capacitor

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SSC JE Electrical 2019 with solution SET-2
The number of brushes required for a 4 pole, lap wound DC machine is

8
2
4
1

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SSC JE Electrical 2019 with solution SET-2
The work done on or by a unit N-pole in moving once around a closed path is equal to

The product of current and number of turns enclosed by that path
Reluctance
The product of flux and number of turns enclosed by that path
Magnetic flux density

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