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

dA ⁄ dΦ
Φ × A
dΦ ⁄ dA
dΦ − dA

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SSC JE Electrical 2019 with solution SET-1
 The amount of AC content present in the DC output of a rectifier is given by

Power factor
Peak factor
Form factor
Ripple factor

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