The torque produced in induction type relay (shaded pole structure) is
A. inversely proportional to the current
B. inversely proportional to the square of the current
C. proportional to the current
D. proportional to square of the current
Answer: Option B
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Related Questions on Switchgear Protections
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ans is D
Option D is the correct ans, as Torque(T) is proportional to I^2*Sin(alpha). Where alpha is the angle between flux produced by shaded portion and unshaded portion.