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A 3-phase, 380 V, 50 Hz , 6 pole, Y-connected induction motor has R, = 0.1 Q, X, = 0.4 N, R, = 0.12 2, X, = 0.4 Q, Xm = 20 2, P, = 1 kW. The motor is operated at 970 rpm. 1. The output shaft torque is: O A) 161 Nm B) 150 Nm C) 295 Nm D) 188 Nm C)None 2. The efficiency is: O A) 91.4% O B) 86.5% O C) 89.3% D) 87.2% C)None 3. The ratio of the stator starting current to full-load current (Igtart / 'rulloae) is : O A) 5.76 O B) 6.12 C) 4.66 O D) 4.98 C)None

A 3-phase, 380 V, 50 Hz , 6 pole, Y-connected induction motor has R, = 0.1 Q, X, = 0.4 N, R, = 0.12 2, X, = 0.4 Q, Xm = 20 2, P, = 1 kW. The motor is operated at 970 rpm. 1. The output shaft torque is: O A) 161 Nm B) 150 Nm C) 295 Nm D) 188 Nm C)None 2. The efficiency is: O A) 91.4% O B) 86.5% O C) 89.3% D) 87.2% C)None 3. The ratio of the stator starting current to full-load current (Igtart / 'rulloae) is : O A) 5.76 O B) 6.12 C) 4.66 O D) 4.98 C)None

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Solve Parts (1),(2)&(3)

A 3-phase, 380 V, 50 Hz , 6 pole, Y-connected induction motor has R, = 0.1 Q, X, = 0.4 N, R, = 0.12 2, X, = 0.4 Q, Xm = 20 2, P, = 1 kW. The motor is operated at 970 rpm. 1. The output shaft torque is: O A) 161 Nm B) 150 Nm C) 295 Nm D) 188 Nm C)None 2. The efficiency is: O A) 91.4% O B) 86.5% O C) 89.3% D) 87.2% C)None 3. The ratio of the stator starting current to full-load current (Igtart / 'rulloae) is : O A) 5.76 O B) 6.12 C) 4.66 O D) 4.98 C)None
Transcribed Image Text:A 3-phase, 380 V, 50 Hz , 6 pole, Y-connected induction motor has R, = 0.1 Q, X, = 0.4 N, R, = 0.12 2, X, = 0.4 Q, Xm = 20 2, P, = 1 kW. The motor is operated at 970 rpm. 1. The output shaft torque is: O A) 161 Nm B) 150 Nm C) 295 Nm D) 188 Nm C)None 2. The efficiency is: O A) 91.4% O B) 86.5% O C) 89.3% D) 87.2% C)None 3. The ratio of the stator starting current to full-load current (Igtart / 'rulloae) is : O A) 5.76 O B) 6.12 C) 4.66 O D) 4.98 C)None
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