Explain synchronous generators, Electrical Engineering

Assignment Help:

Explain Synchronous Generators?

They can be utilized to produce or absorb reactive power. An over-excited machine produces reactive power when an under-excited machine absorbs it. The generator is the major source of supply to the system of both of the positive and negative VArs. The ability to supply VArs is ascertained by the short-circuit ratio (1/ synchronous reactance).

For economic reasons, in current units this ratio is kept low and therefore the inherent ability to run at leading power factors is not large. For instance, a 200 MW, 0.85 p.f. machine with a 10% stability margin can just supply 45 MVAr at full power outputs.


Related Discussions:- Explain synchronous generators

What do you mean by superposition and linearity, Q. What do you mean by Sup...

Q. What do you mean by Superposition and linearity? Mathematically a function is said to be linear if it satisfies two properties: homogeneity (proportionality or scaling) and

Binary to hexadecimal conversion, Binary  to Hexadecimal  Conversion ...

Binary  to Hexadecimal  Conversion To convert a binary  number  into  hexadecimal  divide the number into group  of four  bits  each starting from the least significant bit. Th

Differentiate between dual beam and dual trace oscilloscope, Q. How do you ...

Q. How do you differentiate between dual beam and dual trace oscilloscope? Sol. There are two separate vertical input channels A, B and these use separate attenuator and prea

Name the elements related to capacitance, Elements related to capacitance ...

Elements related to capacitance a.  Electric field: Area that surrounds the electric charge or charges system where the enhancing and reducing of electric force exists.

Ac waveform, which ckt. Or components using for irregular ac sine wave ...

which ckt. Or components using for irregular ac sine wave change into pure sine wave.......

Derating factor, Conductors with a temperature rating of 75 degrees C are r...

Conductors with a temperature rating of 75 degrees C are run in an area with an ambient temperature of 55 degrees C. What would be the de-rating factor that should be applied?

Find the minimum sum of products, Given that , f(a,b,c,d,e) = Σm (6,7,9,11,...

Given that , f(a,b,c,d,e) = Σm (6,7,9,11,12,13,16,17,18,20,21,23,25,28) using a Karnaugh map. (i) Find the essential prime implicants (ii) Find the minimum sum of product

Calculate the induced armature voltage, Q. A 50-kW, 250-V, short-shunt comp...

Q. A 50-kW, 250-V, short-shunt compound generator has the following data: R a = 0.06 , R S = 0.04 , and R f = 125 . Calculate the induced armature voltage at rated load and t

Digital electronic, how many data input and data output line for 8k 16-bits...

how many data input and data output line for 8k 16-bits?

Determine the total power in balanced delta-connected load, Q. Two wattmete...

Q. Two wattmeters are used, as shown in Figure, to measure the power absorbed by a balanced delta-connected load. Determine the total power in kW, the power factor, and the per-pha

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