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

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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?

Sodium vapor lamp
Incandescent lamp
Mercury vapor lamp
Fluorescent lamp

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SSC JE Electrical 2019 with solution SET-1
 Three lamps are connected in series across a 120V supply and take a current of 1.5A. If the resistance of two of the lamps is 30Ω, what is the resistance of the third lamp?

40Ω
10Ω
30Ω
20Ω

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

γ
μ
Φ
λ

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