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

Φ × A
dΦ − dA
dΦ ⁄ dA
dA ⁄ dΦ

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SSC JE Electrical 2019 with solution SET-1
 The law that explains about the economic size of a conductor is:

Kelvin’s law
Faraday’s law
Newton’s law
Lamberts law

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SSC JE Electrical 2019 with solution SET-1
 Which of the following voltage range is used in medium transmission lines?

20 kV to 100 kV
More than 200 kV
50 kV to 200 kV
Less than 20 kV

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