for s=0.018: 21.6 rpm wrt rotor and 1200 rpm wrt stator30 rpm wrt rotor and 1200 rpm wrt statorfor s=0.025: e. The rotor field moves at (ns- nr) with respect to (wrt) the rotor and nswrt the stator.nr11178.4revmin=nr110.018−() 1200⋅=nr11s1−()ns⋅:=s10.018:=d. At a slip of 1.8%, the rotor speed is given by:fr1.5Hz=fr0.025 60⋅=frsfs⋅:=c. The frequency of the rotor currents is given by:
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