SSC JE Electrical 2019 with solution SET-2
A transistor can be made to operate as a switch by operating it in which of the following regions?

Active region, saturation region
Active region
Active region, cut-off region
Saturation region, cut-off region

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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

Fringing effect
Stroboscopic effect
Hall effect
Hopkinson’s effect

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

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