Question

A 50 Hz, 8-pole, 3-phase induction motor has a full load slip of 4%. The rotor resistance is 0.001 ohm/phase, and the standstill reactance is 0.005 ohm/phase. Find i) the ratio of maximum torque to full load torque ii) the speed at which maximum torque occurs.

Name: a 50 hz 8 pole 3 phase induction motor has full load slip of 4 the rotor resistance is 0001 ohmphase and standstill reactance is 0005 ohmphase find i the ratio of maximum torque to full load 98333
Uploaded: 2022-07-08T18:02:52-08:00
Duration: 1 min 31 s
Channel: Animesh Raj
Description: a 50 hz 8 pole 3 phase induction motor has full load slip of 4 the rotor resistance is 0001 ohmphase and standstill reactance is 0005 ohmphase find i the ratio of maximum torque to full load 98333

          A 50 Hz, 8-pole, 3-phase induction motor has a full load slip of 4%. The rotor resistance is 0.001 ohm/phase, and the standstill reactance is 0.005 ohm/phase. Find i) the ratio of maximum torque to full load torque ii) the speed at which maximum torque occurs.

Added by Sara W.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Animesh Raj

07/08/2022

Step 1

Substituting the given values, we get: T_max/T_fl = 2/(0.04 + 1/0.04) = 2/25 = 0.08 So, the ratio of maximum torque to full load torque is 0.08. ii) The speed at which maximum torque occurs can be calculated using the formula: N_max = (1 - s_max) * N_s where Show more…

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A 50 Hz, 8-pole, 3-phase induction motor has a full load slip of 4%. The rotor resistance is 0.001 ohm/phase, and the standstill reactance is 0.005 ohm/phase. Find i) the ratio of maximum torque to full load torque ii) the speed at which maximum torque occurs.