SSC JE Electrical 2019 with solution SET-1
 If dΦ is the luminous flux incident normally on an area dA, then Illuminance is given as

dΦ ⁄ dA
dΦ − dA
dA ⁄ dΦ
Φ × A

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SSC JE Electrical 2019 with solution SET-1
_____ is NOT a component in a thermal power plant

Economizer
Reactor
Chimney
Boiler

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SSC JE Electrical 2019 with solution SET-1
 If an alternator is operating at unity power factor, then its terminal voltage is

Less than the induced EMF, with negative regulation
Equal to the induced EMF, with zero voltage regulation
Less than the induced EMF, with positive voltage regulation
Greater than the induced EMF, with negative voltage regulation

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