SSC JE Electrical 2019 with solution SET-1
 Which of the following is the correct relation regarding coupled coils?

M ≤ (L1L2)0.5
M = (L1 − L2)/2
M > (L1L2)0.5
M = (L1 + L2)/2

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SSC JE Electrical 2019 with solution SET-1
 The laws involved in the expression e  = −dφ/dt are

Coulomb’s and Faraday’s laws
Faraday’s and Lenz’s laws
Coulomb’s and Ampere’s laws
Faraday’s and Ampere’s laws

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

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SSC JE Electrical 2019 with solution SET-1
_______is a tube that brings water to turbines

Forebay
Penstock
Trash rack
Spillway

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SSC JE Electrical 2019 with solution SET-1
If the field of the synchronous motor is under excited the power factor will be:

Unity
Lagging
Leading
Zero

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SSC JE Electrical 2019 with solution SET-1
 The amount of AC content present in the DC output of a rectifier is given by

Peak factor
Ripple factor
Power factor
Form factor

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