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
dA ⁄ dΦ
dΦ − dA

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SSC JE Electrical 2019 with solution SET-1
 In electric traction, the coefficient of adhesion is represented by

γ
λ
Φ
μ

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SSC JE Electrical 2019 with solution SET-1
 Z1 and Z2 are connected in series to form a load. A wattmeter’s current coil is connected in series with the load, whereas its pressure coil is connected across Z2. The wattmeter reads

Zero always
Power consumed by Z1
Power consumed by Z2
Power consumed by Z1 and Z2

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SSC JE Electrical 2019 with solution SET-1
 Which of the following should be used under no-load conditions?

Air-break switch
Isolator
Rewireable fuse
Circuit breaker

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