Draw the power flow diagram of induction motor and iosses, the air gap power and the converted pòwer. Explain how by solving the equivalent circuit of three phase induction motor the input current, input power factor, air gap power, rotor copper loss, converted power, output power and induced torque are calculated. (b))A 440 V, 50 Hz, 2-pole, Y-connected induction motor is rated 75 KW. The equivalent circuit parameters are: R, = 0.0752 R, = 0.0652 X, = 0.17Q XM = 7.22 X, = 0.172 %3D P =1.1kW PEAN = 1.0kW For a slip of 0.04 find the line-eurrent, the statof"power factor, the stator copper_loss, the air gan power, the converted power the induced torque and the 1oad torque. core Pu =150W

Draw the power flow diagram of induction motor and iosses, the air gap power and the converted pòwer. Explain how by solving the equivalent circuit of three phase induction motor the input current, input power factor, air gap power, rotor copper loss, converted power, output power and induced torque are calculated. (b))A 440 V, 50 Hz, 2-pole, Y-connected induction motor is rated 75 KW. The equivalent circuit parameters are: R, = 0.0752 R, = 0.0652 X, = 0.17Q XM = 7.22 X, = 0.172 %3D P =1.1kW PEAN = 1.0kW For a slip of 0.04 find the line-eurrent, the statof"power factor, the stator copper_loss, the air gan power, the converted power the induced torque and the 1oad torque. core Pu =150W

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

A 2MVA, 2.3kV three – phase Y – connected alternator operates at rated kVA at a power factor of 80%. The dc armature winding resistance between terminals is 0.08 ohm. The field takes 70 A at 125 V from an exciter equipment. Friction and windage loss is 20kW, iron losses 36kW and stray load losses are 2.0 kW. Calculate the efficiency of the alternator. Assume the effective armature winding resistance is 120% of the DC resistance. a. 94.0 % b. 92.1 % c. 93.2 % d. 89.5 %
Which of the following statements related to wind turbine types are true? Select one or more: a. The Savonius rotor will not start without an auxiliary motor b. In modern industrial-sized wind turbines, the most common type of turbine is a 3-bladed wind turbine. c. In a downwind turbine, the blades are on the (upper) side of the wind when viewed from the nacell
A 3 phase AC induction motor is operating at no load. What is the power factor? Group of answer choices A) leading B) lagging C) neither leading nor lagging
In a three-phase induction motor the maximum torque occurs at 20% slip and the equivalent resistance of the secondary is 0.04Ω per phase. Find the equivalent load resistance and the load voltage and the load current. Output power is 20 kW.
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
A 60 Hz generator is connected to a turbine operating under a head of 3000 ft with a flow of 80 cubic ft / sec. The turbine specific speed is 3 rpm and a turbine efficiency of 80%. a.) Determine the number of poles of the generator
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
Q5)A- A 3-phase Induction motor has an efficiency of 0.91 when it delivers an Output power of 22KW. At this load,the stator copper losses equals the rotor copper losses and the total copper losses equals the no- load losses the mechanical losses are one-fourth the no-load losses Find the slip write equations with drawing power flow Diagram ? B-Define the following: (i)Regulation (ii) Slip (iii)Core and shell Transformer (iv)PM motor
A three-phase induction motor operates at a slip of 3% and has a rotor copper loss of 300W. The rotational loss is 1500W. Determine (a) the airgap power and (b) the power output.
A three-phase star-connected alternator working at 1400 KVA,50 Hz, 2300 V, has an armature dc resistance of 0.15 2. Assume the ac resistance is 1.4 times the dc resistance. A field current of 75 A produces a short circuit current of 360 A and for the same field current the open circuit voltage is 1000 V. Determine a) Synchronous reactance of the machine b) Full load regulation at 0.9 leading c) Power angle a) b)
Choose True (V) or false( x) for the following : 4) Reluctance is a measure of "opposition" the magnetic circuit offers to the flux. 5) The rated output power (transformer rating) can be used to determine the turns ratio of the transformer. 6) With the increase in speed of a series DC motor, Both back emf as well as line current increase. 7) When an induction motor is stationary, the stator and rotor windings form the equivalent of a transformer. 8) Increasing the load current for DC Self-excited generator Shunt-Wound Generator will increase the terminal voltage. 9) In lap windings there are as many paths in parallel and used to produce high current, low voltage output. 10) In 3-pahse induction motor, if the rotor speed increases, the rate at which the rotating magnetic field cuts the rotor bars is increasing.