4-24- A three-phase, 335-hp, 2000-V, six-pole, 60-Hz, Y-connected scuirrel-cage induction motor has the followingparameters per phase that are applicable at normal slips:ri = 0.2 Qŕ2 = 0.203 NXI == 0.707 Nre = 450 2Xạ = 77 2%3D%3DThe rotational losses are 4100 W . Using the approximateequivalent circuit, compute for the slip of 1.5%:a)line power factor and current.b)devloped current.c)efficincy.

As we have given: Q=335 hpV=2000 VP=6f=60 Hzr1=0.2 Ωr2'=0.203 Ωre=450 Ωx1=0.707 Ωx2=0.707 Ωxϕ=77…

4-24- A three-phase, 335-hp, 2000-V, six-pole, 60-Hz, Y- connected scuirrel-cage induction motor has the following parameters per phase that are applicable at normal slips: Ti = 0.2 2 ń = 0.203 N Xi = X'2 = 0.707 N re = 450 2 %3D Xp = 77 2 The rotational losses are 4100 W . Using the approximate equivalent circuit, compute for the slip of 1.5%: a)line power factor and current. b)devloped current. c)efficincy.

4-24- A three-phase, 335-hp, 2000-V, six-pole, 60-Hz, Y- connected scuirrel-cage induction motor has the following parameters per phase that are applicable at normal slips: Ti = 0.2 2 ń = 0.203 N Xi = X'2 = 0.707 N re = 450 2 %3D Xp = 77 2 The rotational losses are 4100 W . Using the approximate equivalent circuit, compute for the slip of 1.5%: a)line power factor and current. b)devloped current. c)efficincy.

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...

See similar textbooks

Similar questions

ICua_RWaUpXC0w/ -------Source and its rotor trom 26 Hz source. The motor will run at الاجابة تكون بكتابة رقم صحيح و يدون وحدات * (2) ihi The efficiency of the 1 phase induction motor could be better increased-4 * by adding a permanently capacitor in series with the starting winding O adding a permanently 2 capacitors in series with the starting winding none of the mentioned all the mentioned O 4 2aio عدم إرسال كلمات المرور دبر نماذج Go ogle مطلقا. A e University of Basrah J
tal At rest condition, the slip of induction motor is 0. Select one: True False In DC series motor when flux decreases, the speed w decrease zero remains same increase
What is the relationship between slip s) and load (Pa) in an induction motor? Please explain.
A large 3-phase, 4160 V, 60 Hz, squirrel-cage induction motor draws a current of 400 A and the total active power of 2500 kW when operating at full-load. The corresponding speed is accurately measured and is found to be 1178 r/min. The stator is connected in wye and the resistance between two stator terminals is 0.15 0. The total iron losses are 26.5 kW and the windage and friction losses are 15 kW. Calculate the following: The power factor at full-load The active power supplied to the rotor The total I²R losses in the rotor The load mechanical power [kW], torque [kN.m], and efficiency [%] a. b. C. d.
A 400V, 25hp, 60HZ, 4 pole, Y-connected induction motor has the following impedances in ohms per phase referred to the stator circuit: R1=0.6410, X1=1.106 Q, Rp=11.080, Xf=6.680 .The total rotational (windage and friction) losses are 1100 W and are assumed to be constant. The core loss is jumped in with the rotational losses. For a rotor slip of 3.2% at the rated voltage and rated frequency, the stator current is
2) A large 3-phase, 4000 Va (phase to phase), 60 Hz squirrel-cage induction motor draws a current of 385 A/phase. The total active power at the stator input terminals is 2344 kW, when operating at full load. The corresponding speed is accurately measured and found to be 709.2 r/min. The stator is connected in wye and the resistance between two stator terminals is 0.10 Q. The total iron losses are 23.4 kW and the windage and friction losses are 12 kW. Calculate the following: c) The total 1²-R losses in the rotor d) The load mechanical power (kW), torque (kN•m), and efficiency. S = Va · V3 - I S= Vy•3·I %3D
Hury up pleaaaaaaase
(Qld) A three-phase 20-pole induction motor is rated at 800 V, 50 Hz. What is the synchronous speed of this machine if the voltage at its terminals is reduced to 400 V (a) 150 rpm, (b) 300 rpm, (c) 600 rpm, (d) 3000 rpm
The rotor of a 3-phase, 60 Hz, 4-pole induction motor takes 118 kW at 3Hz. The motor has stator copped loss of 2.95 kW, a mechanical loss of 2kW and a stator core loss of 1.7 kW. Solve for the motor efficiency
3. A 440V 60-hp six pole 60 hz A connected induction motor has the following parameters R1=0.048 R2= 0.035 Xm= 9.50 X1= 0.33 0 X2= 0.37 0 Pcore= 600W PF&W= 350W Use the Thevenin's Equivalent circuit concept to find: (a)Vth and Zth seen by the rotor circuit (b)The slip at which maximum torque occurs (c) the value of Max/pullout Torques (d) The starting torque.