1. A 240 V, 50 Hz, single-phase capacitor start a.c. motor is loaded such that the slip is 6%. The mater constants referred to the stator are: Stator resistance = 2-22; Rotor resistance 3-892 2-192 3-02; Rotor reactance ME Stator reactance 86 2; Iron and friction loss 50 W T Magnetising reactance = Draw the equivalent circuit and from it find the output power and efficiency at the given loading

Electric Motor Control
10th Edition
ISBN:9781133702818
Author:Herman
Publisher:Herman
Chapter51: Electric And Electronic Braking
Section: Chapter Questions
Problem 2SQ: Differentiate between the AC and DC magnetic fields applied to an induction motor stator.
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i
Ctrl
廣州
lowe
1. A 240 V, 50 Hz, single-phase capacitor start a.c. motor is loaded such that the slip is 6%. The motor
constants referred to the stator are :
23
Stator resistance = 2-22 Rotor resistance = 3.82
3-02; Rotor reactance = 2.192
=862; Iron and friction loss = 50 W
Stator reactance
Magnetising reactance
Draw the equivalent circuit and from it find the output power and efficiency at the given loading
2. Find the mechanical power output of the 185 W, 110 V, 60 Hz, single-phase induction motor whose
that abo
or d.c.
it is sor
0
throug
with th
:
(1090 W; 746%)
revers
constants referred to stator are:
flux is
Stator resistance
Stator reactance = 3-56
Rotor resistance = 3.56 2; Standstill rotor reactance = 2:56
= 1-862;
motor
Magnetising reactance of stator winding = 53-52
C
d.c. su
1202 W
Transcribed Image Text:i Ctrl 廣州 lowe 1. A 240 V, 50 Hz, single-phase capacitor start a.c. motor is loaded such that the slip is 6%. The motor constants referred to the stator are : 23 Stator resistance = 2-22 Rotor resistance = 3.82 3-02; Rotor reactance = 2.192 =862; Iron and friction loss = 50 W Stator reactance Magnetising reactance Draw the equivalent circuit and from it find the output power and efficiency at the given loading 2. Find the mechanical power output of the 185 W, 110 V, 60 Hz, single-phase induction motor whose that abo or d.c. it is sor 0 throug with th : (1090 W; 746%) revers constants referred to stator are: flux is Stator resistance Stator reactance = 3-56 Rotor resistance = 3.56 2; Standstill rotor reactance = 2:56 = 1-862; motor Magnetising reactance of stator winding = 53-52 C d.c. su 1202 W
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