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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SSC JE Electrical 2019 with solution SET-2
The type of damping used for moving iron instruments is

Fluid friction damping
Eddy current damping
Gravity friction damping
Air friction damping

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