Pls show neat and whole solution. ProblemTwo balanced three-phase motors in parallel, an induction motordrawing 400 kW at 0.80 power factor lagging and a synchronousmotor drawing 150 kVA at 0.90 power factor leading, are suppliedby a balanced, three-phase 4160-volt source. Cable impedancesbetween the source and load are neglected. (a) Draw the powertriangle for each motor and for the combined-motor load. (b)Determine the power factor of the combined-motor load. (c)Determine the magnitude of the line current delivered by thesource.

Answered: Problem Two balanced three-phase motors…

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...

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2. Clear and complete solution.
Two identical 20 MW three-phase alternators operate in parallel. The governor of first machine is such that the frequency drops uniformly from 50 Hz on no-load to 48 Hz on full load. The corresponding uniform speed drop of the second machine is from 50 Hz to 47.5 Hz. How will the two machines share a load of 30 MW?
UDng a ITIe Core in high frequency transformers. c- Discuss, different applications of iron cores of different hysteresis loops. d- Explain the effect of Inrush current on power transformers.
The reactance’s of the alternator during the periods of the subtransient, transient and steady state periods are following, Leakage reactance(XL)=0.13 ohm, Damper winding reactance(XD)= 0.27 ohm Field winding reactance(Xf)=0.54 ohm and Armature reactance (Xm)= 0.73 ohm. The value of the transient reactance during the transient conditions is Transient Reactance
A 1200 kW,60 Hz synchronous alternator A identical governor droop of 0.0005 Hz/kW.Machine A takes two third of 1000kW bus load at 60 Hz.lf an additional 800 kW load is connected to the bus determine (a) bus frequency (b) load on each machine. is in parallel with a 400 kW,60 Hz alternator B.Both machines have (a) 58.6 Hz (b) 566.67 kW, 433.33 kW. (a) 59.6 Hz (b) 866.67 kW, 133.33 kW (a) 59.8 Hz (b) 666.67 kW, 333.33 kW (a) 58.9 Hz (b) 766.67 kW, 233.33 kW
7) A 2-pole three-phase 50Hz 36 stator slots synchronous generator where the coil spans for 0.8889 of the pole pitch. The coil pitch and the winding distribution factors will be, respectively: a) 0.9848, 0.9962. b) 0.9242, 0.9212. 0.9848, 0.9561. d) 0.9242, 0.9962. e) 0.9561,0.9848. f) none of the above.
A 3Ø, Y-connected alternator is rated at 1,600KVA, 13.5KV. The armature effective AC resistance per phase is 1.50. The percentage regulation for a load of 1,280kW at unity power factor is 3.5%. Determine: (a) synchronous reactance of the alternator (b) %VR at full-load 0.8pf leading (c) What is the effect on %VR value if taken at half-load lagging pf? Justify and explain briefly your answer on one(1) sentence.
Q2: A three phase alternator is rated at 120 mva,13.2 kv,0.8 pf lagging, and 60 Hz. its direct axis reactance is 0.62 N and its quadrature axis reactance is 0.4 N.all rotational losses may be neglected . 1-What is the voltage of this generator at the rated condition? 2- what is the voltage regulation of this generator at the rated conditions?
What is the difference between transformer and 3ph asynchronous motor...
synchronous generator threewThe phases are rated at 1000 kVA and operate at a voltage of 6.6 kV. The product resistance per phase is 0.38 ohms and the leakage reactance is 0.5 ohms per phase. The generator works to provide full load at a power factor of 0.85 delayed and at normal voltages. Find the value of the no-load voltage.
The figure shows the label of a Y-connected synchronous generator. According to these tag values, a.Motor voltage ............Is VDC.b.Output electrical active power ..........MW.c.……..phased and........ bipolar.d.Round Rotor/dislocation pole synchronousgenerator (select one of the two.)e.I stimulated the power....... kW.f.Output phase-to-neutral voltage.......VRMs.
Discussion:- 1. What do you understand by "armature- reaction"? Discuss the effect of armature reaction in an alternator when it is loaded with resistive, inductive and capacitive loads. 2. Give the value of voltage regulation for different power factors at full load current and interpret their values.

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