SSC JE Electrical 2019 with solution SET-2
Two coils are said to be ‘magnetically isolated’ provided the coefficient of coupling K

Is less than one
Is equal to one
Is equal to zero
Is less than or equal to one

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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

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

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SSC JE Electrical 2019 with solution SET-2
IL = Load Current, then the relation between these currents for a DC series generator is

IL = Ise + Ia
IL ÷ Ise ÷ Ia
IL ÷ Ise = Ia
IL = Ise = Ia

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