A three phase, 50 Hz, 4800V, 6 pole Y-connected synchronous generator connected to an infinite bus (constant voltage at 4800V) and has synchronous reactance of 202 per phase and negligible armature resistance. The generator is delivering 1 MW at a power angle of 30° . Calculate the following 1. Output torque of the generator 2. Excitation voltage E. 3. Armature current

A three phase, 50 Hz, 4800V, 6 pole Y-connected synchronous generator connected to an infinite bus (constant voltage at 4800V) and has synchronous reactance of 202 per phase and negligible armature resistance. The generator is delivering 1 MW at a power angle of 30° . Calculate the following 1. Output torque of the generator 2. Excitation voltage E. 3. Armature current

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: IISI Jess Leal * Question 3. A 40-kVA, 240-V, three-phase, Y-connected synchronous generator has a…

Q: A 381 V, 50 Hz, Y-connected, eight poles synchronous generator has the OCC given in tabular form…

A: We need to find out the field current.

Q: A IcA B The voltage ratio in the following transformer equals to, Inc VAN/N1 Van/N2 Van/N1 Vab/N2

A: In this question, choose the correct option What is the voltage ratio of the given transformer.

Q: A 220V short-shunt compound generator has armature resistance, series field resistance and shunt…

Q: A 380-V, 60-Hz, A-connected, four-pole synchronous generator has a per-phase synchronous reactance…

A: As per our policy we can provide solution of first three questions only.

Q: The voltage regulation of synchronous generator is defined as the rise in voltage when the load is…

A: Voltage regulation:- it is defined as the measure of change in the voltage magnitude between the…

Q: The generator is operating in stand-alone mode unity power factor load. (a) Draw a neat and clearly…

Q: The open-circuit terminal voltage of a three-phase, 60-Hz synchronous generator is found to be 15.4…

Q: a 3 phase 10 kVA, 380 V star connected, 10 pole synchronous generator has a synchronous reactance…

A: In this question we need to find a speed of generator and voltage regulation at given condition.

Q: A Short shunt compound generator delivers a load current of (16)A at 400V. Armature resistance 0.08…

Q: Q2. A three phase 50MVA, 10kV cylindrical rotor generator has armature resistance of 0.1pu and…

Q: long-shunt compound generato

Q: a) A three-phase, 11 kV, 50 Hz, four poles delta-connected synchronous generator has an armature…

Q: Explain the construction working principle and derivation for the emf induced in a DC generator.…

Q: + 3.26 A 4-pole lap-wound de generator is designed to have an average air gap flux density of 0.8 T.…

A: 8 pole lap wound(A=P=4) B=0.8TRa=0.3ΩVbd=2V

Q: This question refers to a three-phase induction motor. which statement are false (A) The slip speed…

A: According to question:

Q: Draw the Terminal Characteristics of the following Generators. (i)Shunt DC Generator (ii)Series DC…

Q: A 3-phase, 4500 kVA, 13 kV, 50 Hz, 4-pole, star-connected synchronous generator has synchronous…

Q: A salient-pole synchronous generator is connected to an infinite bus. The infinite bus has a…

Q: If the armature resistance of a 3-phase, 318.75 kVA, 2

Q: Y-connected

Q: A 480-V, 50-Hz, Y -connected, six-pole synchronous generator has a per-phase synchronous reactance…

A: Given star connected 6-pole synchronous generator, Voltage 480v Synchronous reactance 1.0H Armature…

Q: A 220V, 5.5 kW, DC shunt generator has an armature resistance of 0.2 Q and a total field-circuit…

A: Given A dc shunt motor with specifications.we need to find the voltage regulation. Please find the…

Q: A 240-V, short-shunt, cumulative compound generator is rated at 100 A. The shunt field current is 3…

A: Given,Voltage, V=240 VRated current, IL=100 AShunt field current, If= 3 AArmature resistance, Ra=50…

Q: A 10 KW full load output power of shunt generator having an armature circuit resistance of 0.75 Q…

A: given shunt generator

Q: A 15 MVA, 13.6 kV, 50HZ hydro generator is supplying a real power of 10 MW. The field current is…

A: GIVEN THAT, MAGNITUDE OF TERMINAL VOLTAGE AND INTERNAL EMF ARE THE SAME AS RATED VOLTAGE. Ef = Vt =…

Q: 2000V 3-phase 4-pole wye connected SM runs at 1800 rpm. The excitation is constant and gives an emf…

A: In this question slip ring induction motor is given....We have to find out input power and developed…

Q: A 381 V, 50 Hz, Y-connected, eight poles synchronous generator has the OCC given in tabular form…

Q: A 50 MVA, 3-phase, 31.2-KV, 0.85-PF-lagging, 50-Hz, 4-pole, Y-connected steam-turbine generator has…

Q: A 3-phase, 11KV, 5MVA, Y-connected cylindrical-rotor alternator has Z = (1+j 10)N per phase. Its…

Q: A 60 KW, 240V compound DC generator (as shown in the figure), has the given parameters: Rse=0.01 2,…

Q: A 690 KVA, 4200-V, 60 Hz, 0.9 PF lagging, Delta-connected, 8- pole synchronous generator has an…

A: A generator is an electrical machine which converts mechanical energy to electrical energy. It is…

Q: A 5 MVA, 3-phase, 14.1-KV, 0.85-PF-lagging, 50-Hz, 4-pole, Y-connected steam-turbine generator has a…

Q: A 3-phase, Y connected, round rotor synchronous generator rated at 8KVA, 220V has a Synchronous…

Q: Q1. The per-unit d-axis and g-axis reactance's of a salient-pole generator are 0.9 and 0.6…

Q: A salient-pole generator operates at rated conditions with a 0.8 PF lagging. It has Xd=1pu and…

A: Write down the formula for armature voltage and power angle assume terminal voltage = 1 pu

Q: (a) Perform binary addition of the following numbers: 100010011.00011+ 101000000.10111 ( mark) (b)…

Q: A three phase 50MVA, 10kV cylindrical rotor generator has armature resistance of 0.1pu and…

A: The rated MVA of the generator, Srated=50 MVA The terminal voltage of the generator, VT=10 kV The…

Q: Two DC Shunt generators are connected to a common load with linear load characteristic. Generator A…

A: Use nodal analysis to find the terminal or load voltage . Then find the current from the each…

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

A three phase, 50 Hz, 4800V, 6 pole Y-connected synchronous generator connected to an
infinite bus (constant voltage at 4800V) and has synchronous reactance of 202 per phase
and negligible armature resistance. The generator is delivering 1 MW at a power angle of
30° . Calculate the following
1. Output torque of the generator
2. Excitation voltage E.
3. Armature current
4. Power factor
5. Reactive power delivered.

Expert Solution

This question has been solved!

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

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

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

A 13.8-kV 10-MVA 0.8-PF-lagging 60-Hz two-pole Y-connected steam-turbine generator has a synchronous reactance of 12 2 per phase and an armature resistance of 1.5 2 per phase. This generator is operating in parallel with a large power system (infinite bus). (a) What is the magnitude of E, at rated conditions? (b) What is the torque angle of the generator at rated conditions?
A 381 V, 50 Hz, Y-connected, eight poles synchronous generator has the OCC given in tabular form below (Phase Voltage versus the field current). The generator has a per-phase synchronous reactance of 0.2 Q, and a negligible armature resistance. At full-load: The machine supplies 500 A armature current at 0.8 PF lagging. How much field current must be supplied to the generator to make the terminal voltage 380 V? EA. (V) 65 125 260 290 320 350 380 420 450 470 IF. (A) 0.00 0.5 1.0 2.0 2.25 2.55 2.7 3.0 3.7 4.1 4.25 Select one: O a. Ip = 1.8 A O b. Ip = 4.1 A O c. None O d. IF = 2.25 A Clear my choice
A 50 MVA, 32-KV, 0.85-PF.lagging. 50-Hz, 4-pole, Delta-connected, 3-phase steam-turbine generator has a synchronous reactance of 10 per-phase, and a negligible armature resistance. The field current is adjusted to produce rated voltage at no load. This generator is connected to operate in parallel with a large power system ( infinite bus) If the field current is unchanged, determine the absolute maximum output power of this generator.
In a long shunt DC generator, Shunt winding is parallel with the Series filed winding and Armature winding of the DC generator. Select one: True False
A six-pole, 30-slot dc commutator generator has a lap wound Armature winding. The armature constant, Ka is 9.55.The generator is operated with a separately excited field such that the field flux per pole is 0.04 weber/pole. The generator is driven at a speed of 3000 rpm. The no load armature voltage is 418.9 V. The above generator is now operated as a motor. The flux is 0.04 weber/pole. It is desired to supply a load requiring a Torque of 50 n–m at 4000 rpm. Armature circuit resistance is 0.075 ohm. Calculate (a) the back emf, (b) the required armature current and voltage to supply this load.
A 13.8-kV, 50-MVA, 0.9-power-factor-lagging, 60-Hz, four-pole Y-connected synchronous generator has a synchronous reactance of 2.5 Q and an armature resistance of 0.2 2. At 60 Hz, its friction and windage losses are 1 MW, and its core losses are 1.5 MW. The field circuit has a dc voltage of 120 V, and the maximum Ir is 10 A. The current of the field circuit is adjustable over the range from 0 to 10 A. The OCC of this generator is shown in Figure P4-1. 4.2 Open-circuit characteristic 20 18 (a) How much field current is required to make the terminal voltage V, (or line voltage V,) equal to 13.8 kV when the generator is running at no load? 16 (b) What is the internal generated voltage E, of this machine at rated conditions? 14 12 (c) What is the phase voltage V of this generator at rated conditions? 10 (d) How much field current is required to make the terminal voltage V, equal to 13.8 kV when the generator is running at rated conditions? (e) Suppose that this generator is running at…
Thanks
Solve it within 30 min I will upvote
A 15-kV 35-KVA 0.76-PF-lagging 50-Hz four-pole Y-connected steam-turbine generator has a synchronous reactance of 3.50 0 per phase and an armature resistance of 0.75 0 per phase. This generator is operating in parallel with a large power system (infinite bus). a) What is the magnitude of E, at rated conditions? b) What is the generator's torque angle at rated conditions? c) If the field current is constant, what is the maximum power possible out of this generator? How much reserve power or torque does this generator have at full load? d) Sketch the corresponding phasor diagram and calculate for the armature current (assume the field current is still unchanged) e) At the absolute power possible, how much reactive power will this generator be supplying or consuming?
Define the Synchronizing Torque and Damping Torque of a Synchronous Generator using the through explanations and draw the essential curves illustrating the concepts
A 380 V line-to-line, 40 kVA, 50 Hz, 6-pole, Y-connected cylindrical rotor synchronous machine operates as an isolated generator (not connected to a bus). The synchronous reactance is 1 Q/phase and the armature resistance is negligible. The field current of the generator is adjusted so that the no-load terminal voltage is 380 V line-to-line. Calculate the terminal voltage and the voltage regulation if the generator is loaded with (draw the phasor diagram for each case) a. rated current at unity power factor b. rated current at 0.8 lagging power factor C. rated current at 0.8 leading power factor