A 440 V 4-pole 3 phase 50 Hz slip ring induction motor has its stator winding...

A 440 V 4-pole 3 phase 50 Hz slip ring induction motor has its stator winding mesh connected and its rotor winding star connected. The standstill voltage measured between slip rings with the rotor open –circuited is 218 V. the stator resistance per phase is 0.6Ω and the stator reactance per phase is 3Ω. The rotor resistance per phase is 0.05Ω and the rotor reactance per phase is 0.25Ω. Calculate the maximum torque and the slip at which it occurs. If the ratio of full-load to maximum torque is 1:2.5 find the full-load slip and the power output. [s_max =0.1; T_max= 278 Nm; s=0.02; P=17.1 kW]

Expert Solution

Manojponduru answered 8 months ago

A 3 phase 460 V, 60 Hz, 4 pole, delta connected induction motor has the following...

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Tests were carried out on a three-phase 220 V, 50 Hz, 4-pole delta-connected induction motor. The...

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A 440-V, 3-φ 50-Hz, 4 poles, 37.3 kW, Y-connected induction motor has the following parameters: R1= 0.1 Ω, X1 = 0.4 Ω , R2′ = 0.15 Ω , X2′ = 0.44 Ω Motor has stator core loss of 1250 W and rotational loss of 1000 W. It draws a no-load line current of 20 A at a p.f. of 0.09 (lag). When motor operates at a slip of 3%, calculate a. input line current and p.f. [57.4@29°A, 0.875 lag] b....

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