SSC JE Electrical 2019 with solution SET-1
In the two wattmeter method, the readings of the two wattmeters are 500W, 500W respectively. The load power factor in a balanced 3-phase 3-wire circuit is:

0.8
0.9
1
0.5

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SSC JE Electrical 2019 with solution SET-1
 H = ____is the expression for the magnetic field due to an infinite linear current-carrying conductor

(μI ⁄ 2Πr) A/m
(μI ⁄ 2r) A/m
(I ⁄ 2Πr) A/m
(I ⁄ 2r) A/m

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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?

Mercury vapor lamp
Fluorescent lamp
Sodium vapor lamp
Incandescent lamp

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