SSC JE Electrical 2019 with solution SET-1
 If the copper loss of a transformer at half full load is 400 W, then the copper loss corresponding to full load is

1200 W
1600 W
800 W
400 W

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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
Fluorescent lamp
Mercury vapor lamp
Sodium vapor lamp

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SSC JE Electrical 2019 with solution SET-1
 The resistive component of the rotor with resistance R2 offered to the backward rotating flux wave in a single-phase motor runs with slip s is given as

R2 ⁄ (1 + S)
R2 ⁄ S
R2 ⁄ (1 − S)
R2 ⁄ (2 − S)

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

Isolator
Circuit breaker
Air-break switch
Rewireable fuse

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SSC JE Electrical 2019 with solution SET-1
Reflected Light/Incident Light =

Reflection factor
Maintenance factor
Absorption factor
Waste light factor

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