SSC JE Electrical 2019 with solution SET-2
Four relations have been given. Select the correct relation?

MMF = Flux/Reluctance
Flux = MMF/Permeance.
MMF = Flux/Permeance
MMF = Flux/Reluctance

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SSC JE Electrical 2019 with solution SET-2
A long straight wire carries a current I = 10 A. At what distance is the magnetic field H = 1 A/m?

10/2π
20/2π
1/2 π
5/2π

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SSC JE Electrical 2019 with solution SET-2
The flux while crossing air gap tends to bulge outwards, thereby increasing the effective area of the gap, this effect is known as

Hopkinson’s effect
Stroboscopic effect
Hall effect
Fringing effect

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