Answered: 2. Why synchronous impedance method…

Engineering

Electrical Engineering

2. Why synchronous impedance method does not provide the exact value of voltage regulation of an alternator?

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

Related questions

Q: Determine the power angle characteristic for the system shown in figure. The generator is operating…

A: Eg = 1.05 puV∠0 = 1∠0

Q: 5. Two 50 MVA, 3-phase alternators operate in parallel. The settings of governors are such that the…

A: When connecting transformers of the same size in parallel, the substation's space capacity is…

Q: A three-phase star-connected alternator working at 1800 KVA,50 Hz,2200 V, has an armature dc…

A: Given Three-phase star connected alternator at1800 KVA,50 Hz,2200 vThe armature dc resistance is…

Q: A synchronous generator is connected to a pure capacitive load. The field excitation is kept…

A: Note: Current lag by 90 degree with respect to voltage in pure inductive load Current lead by 90…

Q: he terminal voltage of a 150 kW series generator is 600 V at rated load. The armature resistance is…

A: Given Data: Vt = 600 V Pg = 150 kW Ra = 0.06 ohm Rse = 0.04 ohm

Q: 4. Determine the voltage regulation of a 2,000-V, 1-phase alternator giving a current of 100 A at…

Q: A DC series generator is supplying a current of 5A to a series lighting system through a feeder of…

Q: why does a series connected DC generator output voltage increase with an increase of the load…

A: In this question we are going to discuss why does a series connected DC generator output voltage…

Q: A 3-phase, star-connected alternator is rated at 15000 kVA, 11 kV. The armature resistance is I-5…

A: The solution is given below

Q: There are 144 slots in a 3-phase, 16-pole, 50 Hz., star connected alternator. There are 4 conductors…

Q: A short shunt compound generator supplies 100A at 110V. Armature resistance is 0.05Q and the shunt…

A: The answer as given below:

Q: A 1200 kW,60 Hz synchronous alternator A identical governor droop of 0.0005 Hz/kW.Machine A takes…

Q: DEGREE: ELECTRICAL ENGINEERING SUBJECT/COURSE: AC MACHINES Answer the following questions (A,…

A: Alternator- Alternator is a form of machine which is used to convert mechanical energy into…

Q: Draw a complete phasor diagram of a single-phase synchronous generator at a general unity power…

A: In this question we need to draw a phasor diagram of synchronous generator at unity power factor and…

Q: A 500 kVA, 11 kV, 3-phase star-connected alternator has the following data : Friction and windage…

Q: A single phase, 2000 V alternator has armature resistance and reactance of 0.8 ohms and 4.94 ohms…

A: Given, A single phase alternator has V= 2000 V R= 0.8 ohms X= 4.94 ohms I= 100 A Power factor,…

Q: How does a synchronous generator operate, and what are its primary applications in power generation?

A: We have to explain how a synchronous generator operates, and what are its primary applications in…

Q: 6-pole, 3-phase, 60-cycle alternator has 12 slots per pole and four conductors per slot. The winding…

Q: Describe the figures below and how each of figure below are working

A: By increasing the data to a specific power, power transformations are applied. The power parameter…

Q: A three-phase star-connected alternator working at 1400 KVA,50 Hz,2200 V, has an armature dc…

A: A three phase,star-connected alternator has, Rating = 1400 KVA, Line voltage (VL)= 2200 V Armeture…

Q: An 135-pole d.c. shunt generator with wave wound armature having 620 conductors, has to supply a…

A: DC shunt Generator It's supplied to the 170lamps each 135W at 235V. Load current? Generated Emf…

Q: We know there are few conditions for alternator synchronization. How many conditions are there?…

A: There are total 5 conditions of synchronization .

Q: and synchronous reactance per phase = 2.252. Find the % regulation for a power factor of 0.707…

Q: Two 36 AC generators are such that one has twice the linear dimensions of the other. The field…

A: Solution: Let For Generator 1, Length=l1 Diameter=D1 For Generator 2, Length=l2 Diameter=D2…

Q: Draw a complete circuit diagram of 1 phase synchronous alternator including the field excitation…

Concept explainers

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.

Question

100%

2. Why synchronous impedance method does not provide the exact value of
voltage regulation of an alternator?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

Q3: a- Compare the excitation of 3-phase induction and synchronous machines. b- Draw the phasor diagram for the alternator at each of the following operating conditions: lagging pf, leading pf, normal excitation, and maximum power. Indicate the kind of excitation and reactive power for each case.
I need the answer as soon as possible
Draw a complete circuit diagram of 1 phase synchronous alternator including the field excitation circuit. Then, draw the phasor diagram of the generator a general leading power factor. Include the phase resistance in the diagram.
5)This MCQ QUESTION FROM BASIC POWER ELECTRICAL ENGINEERING course.
The standard practice of synchronous generator construction now a days is to have Cylindrical field Rotating armature Either of the above Rotating field In an alternator, the armature reaction influences the magnitude of No load loss Wave form of generated voltage. Speed of the machine Flux Terminal voltage per phase
solve asap
9.5 Find the no-load terminal voltage of an 8-pole Alternator when driven at 750 rpm from the following data: Flux per pole 0.035 Wb distributed sinusoidally; slots per pole per phase 5; conductors per slot 24; two-layer winding; phase-spread 60°; coil-span 144° star-connection.
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 %
A 3-phase, 60 Hz, 6 pole alternator has an air gap flux which is sinusoidally distributed. The stator has 5 slots per pole per phase and each slots contains 4 conductors arranged in two layers. The coil pitch is 12 slots, with normal excitation and rated speed, the voltage induced per conductor is 25 V. The open circuited emf of this Y-connected machine between lines is?
Full solutions for the question with explanation
Eo(LL) (V) a) 3000 b) 2500 2000 1500 1000 500 0 No-load excitation curve @3600rpm 0 1 2 3 4 5 6 DC Excitation current (A) 7 The figure above shows the no-load excitation (LL) curve of a 3-ph, 2-pole, 60 Hz, 1000 kVA, 2.3 kV synchronous alternator at rated speed. The alternator has negligible resistance and Synchronous Reactance Xs = 1.2 n/phase. If the alternator is synchronized to the Power Grid at 2.3 kV (Line to Line), calculate the following: 8 9 10 The value of excitation current required for full load current at 0.7 pf lagging (over-excited). |EO(LL)I IF The alternator current and reactive power when it is delivering 80% rated power (0.8 MW) and its DC excitation current is 4 A. IL Q3ph
Two 30 AC generators are such that one has twice the linear dimensions of the other. The field windings of each are excited to give identical sinusoidal air gap flux density waveform. Both have the same number of stator slots and identical winding patterns. The conductors per slot in big generator in K times that of the smaller one. The value of K to get equal no-load voltage at same frequency is (a)8 (b) 8 1 (d) 7 (c) 4