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

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

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SSC JE Electrical 2019 with solution SET-2
If a circular conductor carries a current of ‘I’ ampere having radius ‘r’ meter, then the magnetizing force at the center of the coil is given by

(1/4r)*(At/m)
(1/r)*(At/Wb)
(1/r)*(At/m)
(1/2r)*(At/m)

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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
4
2
1

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SSC JE Electrical 2019 with solution SET-2
Identify the correct statement regarding a nuclear power plant?

Graphite is used as a coolant
Graphite is used as fuel
Graphite is used as an electrode
Graphite is used as a moderator

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