In an induction motor, no-load the slip is generally
A. Less than 1 %
B. 1.5 %
C. 2 %
D. 4 %
Answer: Option A
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since at no load rotor speed is nearly at synchronous speed but not equal to synchronous speed.
so while calculating sleep '%s' =(Ns-Nr)/Ns*100 i,e.... it will give less then 1%