Calculate the machine power factor, Mechanical Engineering

Assignment Help:

A 3-phase, 15-kV, 4-pole, cylindrical rotor synchronous generator is connected to a 50-Hz infinite bus. The synchronous reactance of the machine is Xs = 0.6 ohms per phase and the excitation voltage is set to E0 = 12 kV line-to-neutral. 

 a)  Draw single-phase equivalent circuit representing the machine connected to infinite bus. 

b)  Consider the machine running as a synchronous condenser.

(i)  What is the amount of active power generated by the machine? 

(ii)  Calculate the amount of current injected by the machine to the infinite bus. 

(iii)  Calculate the amount of reactive power generated by the machine. 

 Now, the excitation voltage has been reduced to 8.66 kV and the steam turbine supplies mechanical torque on the shaft such that the torque angle of the machine is equal to +30°.

 c)  Draw phasor diagram for this operating conditions showing clearly the bus voltage, the excitation voltage and the stator current. 

d)  Calculate the machine power factor.


Related Discussions:- Calculate the machine power factor

Describe pendulum pump mechanism, Describe in detail the following mechanis...

Describe in detail the following mechanisms : (a) Pendulum Pump (b) Crank and slotted lever mechanism Explain in detail the following mechanisms : (a) Elliptical Tramme

Types of brake , Types of Brake The brakes used in motorcycles can be ...

Types of Brake The brakes used in motorcycles can be classified as follows: (a) Drum Brake (b) Disc Brake

Example of shear force and bending moment diagram, Example of Shear force a...

Example of Shear force and bending moment diagram: Q: Draw the Shear Force and bending moment diagram for the simply supported beam loaded as shown in the figure given belo

Friction, Friction: you have learnt laws of friction and problems invo...

Friction: you have learnt laws of friction and problems involving dry friction. The relative sliding motion of one body on another body is resisted by forces called as frictio

Maximum stress in each material, The maximum stress in each material: ...

The maximum stress in each material: A copper tube of external diameter 60 mm and internal diameter 40 mm is closely fitted to a steel rod of 40 mm diameter to compose a compo

Determine the amount of air circulated per minute, An air refrigerator oper...

An air refrigerator operates between the pressure limits of 1 bar and 5 bar. The temperature of the air entering the compressor and expansion cylinder are 15 o C and 25 o C respect

Geometric modelling, Geometric modelling: Geometric modelling is an in...

Geometric modelling: Geometric modelling is an integral part of any Computer-Aided-Design (CAD) system. Integration of geometric modelling; computer graphics along with design

Velocity ratio for open belt drive, V elocit y Ratio for Open Belt Drive:...

V elocit y Ratio for Open Belt Drive: Figure Consider a simple belt drive (that is one driver and one follower) as shown in the figure given below Let D 1

Describe natural and synthetic sand, Q. Describe Natural and Synthetic Sand...

Q. Describe Natural and Synthetic Sand? Natural sand: A natural sand is the on which is available from natural deposits. Only assistive and water need to be added to it to ma

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd