SSC JE Electrical 2019 with solution SET-1
 Which of the following is the function of the moderator in a nuclear reactor?

Stopping chain reaction
To slow down the fast-moving electron
Starting chain reaction
Controlling chain reaction

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SSC JE Electrical 2019 with solution SET-1
 For a three-layer stranded wire, the number of strands in the first, second, and third layer respectively are:

1, 4 and 8
1, 7 and 14
1, 6 and 12
1, 5 and 10

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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?

Fluorescent lamp
Incandescent lamp
Sodium vapor lamp
Mercury 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 ⁄ (2 − S)
R2 ⁄ S
R2 ⁄ (1 + S)

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