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

λ
γ
Φ
μ

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SSC JE Electrical 2019 with solution SET-1
 Which of the following lamps has the shortest/less life span in working hours?

Incandescent lamp
Mercury vapor lamp
Sodium vapor lamp
Fluorescent lamp

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