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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.
Two Quadrant Type A Chopper or Class C Chopper or Reversible Chopper The quadrant type A Chopper is also known as reversible chopper because the polarity of the load cur
Explain Soft ferrites and their applications. Soft ferrites and their applications: Such are non- metallic compounds having ferric oxide and one or two bivalent metal oxides as
What are procedures? Procedures are a group of instructions stored as a separate program in memory and it is known from the main program whenever needed. The type of procedure
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what is the contruction of a fixed capacitor
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