SSC JE Electrical Engineering 22 Jan 2018 Morning Paper

Question : 159 of 200

Marks: +1, -0

In the induction motors the torque is directly proportional to the

Solution:

In Induction motor, Torque is given by

T={KϕSE^2R_2}/{R_2^2+(SX_2)^2}

Now at very low value of slip i.e. S = 0
we get

T={KϕSE^2R_2}/{R_2^2}

∴T={KSV^2}/R_2

∴T ∝S

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