A 3 phase, 10 kW, 400 V, connected induction 400 V, 4 pole, 50 Hz, star motor draws 20 A on full load. Its no load and blocked rotor test data are given below: No Load test: 400 V Blocked Rotor test: 90 V 6 A 15 A 1002 W 762 W Neglecting copper loss in no load test and core loss in Blocked Rotor test, estimate motor's full load efficiency.

A 3 phase, 10 kW, 400 V, connected induction 400 V, 4 pole, 50 Hz, star motor draws 20 A on full load. Its no load and blocked rotor test data are given below: No Load test: 400 V Blocked Rotor test: 90 V 6 A 15 A 1002 W 762 W Neglecting copper loss in no load test and core loss in Blocked Rotor test, estimate motor's full load efficiency.

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

I asked the question 2 hours before but i didn't know the I had to upload by 3 -3 subparts so this is the rest of my previous question. PLEASE EXPLAIN THE d) sub part as soon as possible.Thanks in advance. The no-load and locked-rotor test results of a three-phase 10 HP, 220 V, 60 Hz, 6 poles star connected induction motor are; The no-load test: VNL=220 V, PNL=340 W, INL=6.2 A The locked-rotor test: VSC=54 V, PSC =430 W, ISC =15.2 A The voltage across the stator windings is 2 V when nominal DC current flows through it. Coefficient for DC resistance is 1,25. d) Slip value at the maximum (breakdown) torque,
The no-load and locked-rotor test results of a three-phase 10 HP, 220 V, 60 Hz, 6 poles star connected induction motor are; The no-load test: VNL=220 V, PNL=340 W, INL=6.2 A The locked-rotor test: VSC=54 V, PSC =430 W, ISC =15.2 A The voltage across the stator windings is 2 V when nominal DC current flows through it. Coefficient for DC resistance is 1,25. a) Calculate the equivalent circuit parameters and draw the complete single-phase equivalent circuit of the induction motor. b) Calculate efficiency of the motor for s=0.06 by using the approximate equivalent circuit (RFe core resistance is not ignored). c) Shaft torque for s=0,06 d) Slip value at the maximum (breakdown) torque, e) Maximum (breakdown) torque of the induction motor. f) Speed of the motor at maximum torque point. g) Rotor frequency at maximum torque.
Please explain your answers step by step how did you solve or why u needed those formulas etc. Thanks in advance. You know better than me but I'm mentioning just for clarification this question is on the electromechanical energy conversion. The no-load and locked-rotor test results of a three-phase 10 HP, 220 V, 60 Hz, 6 poles star connected induction motor are; The no-load test: VNL=220 V, PNL=340 W, INL=6.2 A The locked-rotor test: VSC=54 V, PSC =430 W, ISC =15.2 A The voltage across the stator windings is 2 V when nominal DC current flows through it. Coefficient for DC resistance is 1,25. a) Calculate the equivalent circuit parameters and draw the complete single-phase equivalent circuit of the induction motor. b) Calculate efficiency of the motor for s=0.06 by using the approximate equivalent circuit (RFe core resistance is not ignored). c) Shaft torque for s=0,06d) Slip value at the maximum (breakdown) torque, e) Maximum (breakdown) torque of the induction motor. f) Speed of…
Draw the circle diagram for a 5.6 kW, 400-V, 3-φ, 4-pole, 50-Hz, slip-ring induction motor from the following data :No-load readings : 400 V, 6 A, cos φ0 = 0.087 : Short-circuit test : 100 V, 12 A, 720 W.The ratio of primary to secondary turns = 2.62, stator resistance per phase is 0.67 Ωand of the rotor is 0.185 Ω.
Draw the circle diagram for a 5.6 kW, 400-V, 3-φ, 4-pole, 50-Hz, slip-ring induction motor from the following data : No-load readings : 400 V, 6 A, cos φ0 = 0.087 : Short-circuit test : 100 V, 12 A, 720 W. The ratio of primary to secondary turns = 2.62, stator resistance per phase is 0.67 Ω and of the rotor is 0.185 Ω. Calculate (i) full-load current (ii) full-load slip (iii) full-load power factor (iv) maximum torque full - load torque (v) maximum power.
3-phase 3730W, 220V, 6-pole and 50 Hz induction motor operates at full load with a slip of 0.025. The sum of the rotational losses including friction + windage losses and other (stray load) losses is 5% of the output power. Find the induced (electromagnetic) moment at full load
A no load test conducted on a 30 Hp, 835 rpm , 440V 3-phase 60 hz squirrel cage induction motor yielded the following results.No load voltage line to line = 440VNo load current = 14ANo load power = 1470 WResistance measured between two terminals = 0.5Ω The locked rotor test conducted at reduced voltage gave the following results. Locked rotor voltage line to line = 163V Locked rotor power = 7200W Locked rotor current = 60A Determine the equivalent circuit of the motor.
For a 6 pole, 3 phase, 60 Hz induction motor ratio of stator to rotor turns is 2. On a certain load, its speed is observed to be 995 r.p.m. when connected to 415 V supply. Calculate, i) Frequency of rotor e.m.f. in running condition ii) Magnitude of induced e.m.f. in the rotor at standstill iii) Magnitude of induced e.m.f. in the rotor under running condition. Assume star connected stator
380V, 50Hz, 4-pole star-connected asynchronous motor draws 27.5A current at 0.806 back power factor. Stator copper losses 750W, rotor copper losses 450W, friction and wind losses 200W, core Find the desired ones since their losses are 400W and stray load losses are 100W. What is the; The power of the air gap (Pag) and the power generated in the rotor (Pconv)? Output power and efficiency? slip(slip calculation)? The torque generated in the rotor and output torque? and Draw the power flow diagram.
Please Do not Designed 15 Kw Please Must Show Given Questions in Design for 11KW Motor . A15 kW, 440 V, 4-pole, 50 Hz, 3-phase induction motor is built with a stator bore 0.25 m and a core length of 0.16. The specific electric loading is 23000 ampere conductors/meter. Using the data of this machine, determine the core dimensions, number of stator slots and number of stator conductors for 11 kW, 460 V, 6 pole, 50 Hz motor. Assume a full-load efficiency of 84% and power factor of 0.82 for each machine.the Winding Factor is 0.955.
3-phase 3730W, 220V, 8 poles and 50 Hz asynchronous motor operates at full load with a slip of 0.025. The sum of the rotational losses including friction + windage losses and other (stray load) losses is 5% of the output power. Find the induced (electromagnetic) moment at full load.
A fractional horse-power universal motor has armature circuit resistance of 20 ohm andinductance of 0.4HH. On being connected to a 220-Vdc supply, it draws 1.0 A from the mainssand runs at 2000 rpm. Estimate the speed and power factor of theh motor, when connected toa 230-V, 50-Hz supply drawing the sasme armature current. Draw relevant phasor diagram.