Question
Download Solution PDFIf the synchronous speed of a motor is 1000 rpm and the rotor speed is 970 rpm, then percentage slip is ________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept
The slip of an induction motor is given by:
\(s={N_s-N_r\over N_s}\)
where, s = Slip
Ns = Synchronous speed
Nr = Motor speed
Calculation
Given, Ns = 1000 rpm & Nr = 970 rpm
\(s={1000-970\over 1000}=0.03\)
% s = 3%
Additional Information If the value of slip, s = 0
\(0={N_s-N_r\over N_s}\)
\(0={N_s-N_r}\)
\({N_s=N_r}\)
When the value of slip is zero, the motor runs at full load speed.
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