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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.
Under what circumstances is individual circuit protection for a lighting and applications panel board not required? What is the purpose of guarding runway contact conductors and
Significance of form factor,why we decide the power handing capacity in transmission with the help of form factor?
National tariff policy: The Central Government notified the National Tariff Policy on January 6, 2006, for the power sector in line along with the Section 3 of the EA, 2003. Wi
Questions: a) One common characteristic of Embedded Systems is that they need to be dependable. Name and describe any three aspects which encompass dependability. b) Name
analysis
Speed and Torque Control of Polyphase Induction Motors The induction motor is valuable in so many applications because it combines simplicity and ruggedness. Although a good nu
#ques1. (MATLAB) Generate 100 samples of the signal = sin (0.125). We want to decimate this signal using D = 2. • Design a 25-order lowpass filter using the Parks-McClella
uses of ferromagnatic transformer
Explain Antiferromagnetism magnetic materials. Antiferromagnetism : Magnetic dipoles are aligned anti-parallel to each other. Antiferromagnetic type materials are not as famil
Explain BIOS The IBM PC has in its ROM a collection of routines, each of which performs some particular function such as reading a character from keyboard, writing character to
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