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

Direct 3-bit binary decoding, Q. A table for the direct 3-bit binary decodi...

Q. A table for the direct 3-bit binary decoding is given. Show a block diagram for a 3-to-8 decoder and suggest a method for its implementation.

Obtain an expression for the closed-loop transfer function, Q. A noninverti...

Q. A noninverting op-amp circuit and its closed-loop representation are given in Figure. Obtain an expression for the closed-loop transfer function H(ω) = Y (ω)/X(ω) and comment on

Compute the magnitude of the line-to-line voltage, Q. Three identical imped...

Q. Three identical impedances of 30 30° are connected in delta to a three-phase 173-V system by conductors that have impedances of 0.8 + j0.6  each. Compute the magnitude of the l

Auto transformer, winding turns of 415v step down transformer on 50%, 60% &...

winding turns of 415v step down transformer on 50%, 60% & 80% tapping

Clippers, Which clipper would you prefer between the series and the shunt c...

Which clipper would you prefer between the series and the shunt clipper? Why?

Network theorems, what is the limitations of maximum power transfer thorem ...

what is the limitations of maximum power transfer thorem ?

What are the features used mode 1 in 8255, What are the features used mode ...

What are the features used mode 1 in 8255? Two groups - group A and group B are available for stored data transfer. 1. Each group have one 8-bit data I/O port and one 4-bit

Find the bandwidth of the modulated signal, The signal m(t), whose frequenc...

The signal m(t), whose frequency spectrum M(f ) is to be transmitted from one station to another. Let the signal be nor- malized, i.e., -1 ≤ m(t) ≤ 1. Find the bandwidth of the mod

Use a 4-to-1 multiplexer to simulate nand logic function, Q. Use a 4-to-1mu...

Q. Use a 4-to-1multiplexer to simulate the following: (a) NAND logic function. (b) EXCLUSIVE-OR logic function. (c) Σ m (1, 2, 4).

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