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categoryهندسة كهربائية
schoolبكالوريوس
event_available2026-07-14
السؤال
Transcribed Image Text:
Q1)
A 208-V four-pole 60-Hz Y-connected wound-rotor induction motor is rated at 30 hp. Its equivalent
circuit components are
R₁ = 0.100 2
R₁₂ = 0.070 2
X = 10.02
X₁ = 0.210 2
X₂ = 0.210 2
Pmech = 500 W
P
= 0
misc
P core
= 400 W
For a slip of 0.05, find
Q2)
(a) The line current I
(b) The stator copper losses PSCL
(c) The air-gap power PAG
(d) The power converted from electrical to mechanical form Pconv
(e) The induced torque Tind
(f) The load torque load
(g) The overall machine efficiency
(h) The motor speed in revolutions per minute and radians per second
In the previous problem (Q1), what is the slip at the pullout torque? What is the pullout torque of this
motor?
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