A 20 MVA, 11.2 kV, 4-pole, 50 Hz alternator has an inertia constant of 15 MJ/MVA. If the input and output powers of the alternator are 15 MW and 10 MW, respectively, the angular acceleration in mechanical degree/s² is (round off to nearest integer).

A 20 MVA, 11.2 kV, 4-pole, 50 Hz alternator has an inertia constant of 15 MJ/MVA. If the input and output powers of the alternator are 15 MW and 10 MW, respectively, the angular acceleration in mechanical degree/s² is (round off to nearest integer).

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

See similar textbooks

Related questions

Q: The generated voltage per phase of an alternator is E0 while the speed of rotor rotation is 3000…

A: We know the relation between emf phase ans speed of rotor. Ephase=4.44Kpkdfrequency*flux*turn…

Q: Q2. An electric power station has to meet the following demand: Group 1: 200 kW between 8 A.M. and 6…

A: The solution can be achieved as follows.

Q: The voltage regulation of alternator can be regulated by changing its rotational speed. O True O…

Q: citor is 3,2 micro voltage of the ge -. Frequency 100 Hz (b) what is the rr it when it is 100C

Q: How many poles are required on an alternator which runs at 300 rpm to develop

Q: A 25 MVA, 4-pole, 50 Hz turbo-alternator has an inertia constant H = 5 kW sec/kVA. The stored…

A: Given: A turbo alternator has, Power rating, S = 25 MVA Inertia constant, H = 5 kW sec/kVA

Q: power triangle shown below represents the characteristics of a 230 V 60 Hz ac motor. How much…

Q: An inductor is connected in parallel with a 6540 resistor and a function generator. The applied…

A: Let current through the resistor be IR and current through the inductor is IL and I be total source…

Q: small 4-pole generator with a six-turn rotor coil generates the following voltage wave: e = 169.706…

Q: AC Machine Fundamentals A three-phase Y-connected 60 Hz two-pole synchronous machine has a stator…

Q: The speed of an alternator rotor in rpm that has 4 poles and is producing a voltage at 45.4 Hertz…

Q: Consider a generator that rotates its 200 turn, 0.19 m diameter coil at 3600 rpm in a 0.95 T field.…

A: For an electrical generator, the following data is given:number of turns of coil N=200,magnetic…

Q: A synchronous generator generates 370 V at 55 Hz when the field current is 4.4A. The e.m.f generated…

A: Generated emf of the synchronous generator is proportional to is frequency and current.

Q: Consider a generator that rotates its 200 turn, 0.18 m diameter coil at 3500 rpm in a 0.95 T field.…

A: We need to find out peak voltage for given generator .

Q: iii) A sine waveform with following specifications. RMS voltage 161.4V Time for ten cycles 0.02s…

A: Given values are =

Q: Your company is to supply a 50 Hz alternator to a European company. The stator is wye connected with…

A: Given:- f=50 Hzϕ=0.173 weberT=28 turns

Q: A 100 MVA generator operates load of 50 Hz frequency. The load is suddenly reduced to 50 MW. The…

A: Given, Generator power rating, S = 100 MVA Frequency, fo = 50 Hz The load is suddenly reduced to,…

Q: A synchronous generator generates 365 V at 60 Hz when the field current is 3.9A. The e.m.f generated…

A: A synchronous generator generates 365 V at 60 Hz At he field current is 3.9A. The e.m.f generated…

Q: The generated or induced AC voltage is independent to the speed of the rotor. O True O False

A: Correct option is False we know they average Emf induced per conductor is (PFN) /60 volts Here P is…

Q: Ia a α 10.89 O 2.91 O 5.16 O 82.46

Q: A hydraulic turbine turning at 100 r/min is coupled to a synchronous generator. If the induced…

A: Given, A hydraulic turbine connected to synchronous generator with speed, Ns=100 rmin or rpm Induced…

Q: A separately excited dc generator generates 230 V when driven at 1200 rpm of the field flux is…

Q: The rotor of a 4-pole ac generator is wound with a 200 turns coil. If the flux per pole is 5 mWb and…

A: Given: An AC generator with, Number of pole, P = 4 Number of turns, N = 200 Flux, φ=5 mWb Speed, Ns…

Q: a) To increase the output of an ac generator, a student has the choice of doubling either the…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: A basic, single loop, 2 pole generator is rotating at a speed of 2160 RPM. The output frequency of…

A: In this question We need to choose the correct options What is frequency if speed and number of pole…

Q: Consider a generator that rotates its 200 turn, 0.17 m diameter coil at 3350 rpm in a 0.55 T field.…

A: In this question we need to find the peak voltage of the generator.

Q: The speed of an alternator rotor in rpm that has 6 poles and is producing a voltage at 57.4 Hertz is

Q: A 50 Hz alternator stator is delta connected with each winding having 40 turns of wire. The rotor is…

A: f=50 Hzϕ=0.148 weberT=40 turns

Q: A 100 MVA, four-pole, 60 Hz generator has a moment of inertia 25 X 103 Kg-m2 . The angular momentum…

Q: Calculate the average power output of a wind turbine with blades of 85 m diameter operating in wind…

A: The length of blades = 85 m Mean speed, V=7 m/s Power coefficient, Cp=0.45 Density of air, ρ=1.22…

Question

A 20 MVA, 11.2 kV, 4-pole, 50 Hz alternator has an inertia constant of 15 MJ/MVA. If
the input and output powers of the alternator are 15 MW and 10 MW, respectively, the
angular acceleration in mechanical degree/s² is (round off to nearest integer).

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 with 1 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

The voltage regulation of alternator can be regulated by changing its rotational speed. O True O False
a) To increase the output of an ac generator, a student has the choice of doubling either the generator's magnetic field or its frequency. To maximize the increse in emf output, A - he should double the magentic field.B - he should double the frequency.C - it does not matter which one he doubles. b) Two students display their ac generators at a science fair. The generator made by Student A has a loop area of 100 cm22 rotating in a magnetic field of 20 mT at at 60 Hz. The generator made by Student B has a loop area of 75 cm22 rotating in a magnetic field of 200 mT at at 120 Hz. Calculate the emf of the two generators. Student A: Student B:
q. 7
A synchronous generator generates 370 V at 55 Hz when the field current is 4.4A. The e.m.f generated when the frequency is 35HZ and the field current is 2.9A is ..... .......
The RMS value of current, if the value of armature current is 14 A, a = 51 degrees, and B = 160 degrees is Ia a+T B+T a O 10.89 O 2.91 O 5.16 O 82.46
please help asap
Solve it quickly please
A 50 Hz alternator stator is delta connected with each winding having 40 turns of wire. The rotor is supplying 0.148 Wb of flux in the center of the pole face. What is the RMS value of the output voltage if the measured line to neutral
A) A magnetic flux Ø=2 Sin 377t +0.08 Sin 1885 mwb completely links a 500 turns coil. Find a) The instaneous value of voltage induced in the coil. b) The rms induced voltage in the coil. . Thank you Need Asap ?
2, In a circuit, the capacitance of a capacitor is 3.2 microfarads and the rms voltage of the generator is 50 volts. Frequency (a) 100 Hz and (b) what is the rms current in the circuit when it is 1000 Hz?
A 50 Hz, 4 pole turbo alternator rated at 20 MVA, 13.2 kV has a inertia constant H = 4 kW sec/kVA. The K.E stored in the rotor in the rotor at synchronous speed is
Your company is to supply a 50 Hz alternator to a European company. The stator is wye connected with each phase winding having 28 turns of wire. The rotor is supplying 0.173 Wb of flux in the center of pole face. What is the RMS value of the output voltage if measured line to neutral?