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A 600 V, 3-phase 60 Hz, 56.7 kW, Y-connected induction motor has the following parameters: R, = 0.12 Q; R,' = 0.18 Q; X, = 0.67 Q and X', = 0.56 0 Motor has stator core loss of 980 W and rotational loss of 860 W. It draws a no-load line current of 35 A at a pf of 0.09 (lag). When motor operates at a slip of 2.7 % calculate: a.) Input current and pf b.) Electromagnetic torque developed in Ib-ft c.) Output d.) Efficiency of the motor Use: R/S II =

A 600 V, 3-phase 60 Hz, 56.7 kW, Y-connected induction motor has the following parameters: R, = 0.12 Q; R,' = 0.18 Q; X, = 0.67 Q and X', = 0.56 0 Motor has stator core loss of 980 W and rotational loss of 860 W. It draws a no-load line current of 35 A at a pf of 0.09 (lag). When motor operates at a slip of 2.7 % calculate: a.) Input current and pf b.) Electromagnetic torque developed in Ib-ft c.) Output d.) Efficiency of the motor Use: R/S II =

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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A 600 V, 3-phase 60 Hz, 56.7 kW, Y-connected induction motor has the following parameters:

R1 = 0.12 Ω; R2

’ = 0.18 Ω; X1 = 0.67 Ω and X’2 = 0.56 Ω

Motor has stator core loss of 980 W and rotational loss of 860 W. It draws a no-load line current

of 35 A at a pf of 0.09 (lag). When motor operates at a slip of 2.7 % calculate:

a.) Input current and pf

b.) Electromagnetic torque developed in Ib-ft

c.) Output

d.) Efficiency of the motor

Use: R2

’/S

3. A 50-hp, 200 V, 13

A 600 V, 3-phase 60 Hz, 56.7 kW, Y-connected induction motor has the following parameters: R, = 0.12 Q; R,' = 0.18 Q; x, = 0.67 Q and X', = 0.56 0 Motor has stator core loss of 98o w and rotational loss of 860 W. It draws a no-load line current of 35 A at a pf of 0.09 (lag). When motor operates at a slip of 2.7 % calculate: a.) Input current and pf b.) Electromagnetic torque developed in Ib-ft c.) Output d.) Efficiency of the motor Use: R/S
Transcribed Image Text:A 600 V, 3-phase 60 Hz, 56.7 kW, Y-connected induction motor has the following parameters: R, = 0.12 Q; R,' = 0.18 Q; x, = 0.67 Q and X', = 0.56 0 Motor has stator core loss of 98o w and rotational loss of 860 W. It draws a no-load line current of 35 A at a pf of 0.09 (lag). When motor operates at a slip of 2.7 % calculate: a.) Input current and pf b.) Electromagnetic torque developed in Ib-ft c.) Output d.) Efficiency of the motor Use: R/S
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