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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.
Application of Microprocessors Microprocessor microcontroller based systems may be used in almost every filed of life and their applications are increasing day by day
Sparking : In ordinary domestic situations, small electrical sparks are usually not hazardous. In certain conditions which are frequently encountered in science labs, even the sma
Q. Determine the Laplace transform for each of the following functions from the basic de?nition of Equation. (a) f 1 (t) = u(t) (b) f 2 (t) = e-at (c) f 3 (t) = df (t) dt,
Explain the Johnson Counters? The Johnson counters are a variation of standard ring counters with the inverted output of the last stage fed back to the input of the first stage
You have been requested by your Senior Engineer to design a lift control unit (LCU) and prepare a report detailing your proposed solution. The client requires a microcontroller bas
Q. Define Number Systems? A number system, in general, is an ordered set of symbols (digits) with relationships defined for addition, subtraction, multiplication, and division.
Q. Show limitations of microprocessor-based control systems? Practical limitations of microprocessor-based control systems stem from the following considerations: • Finite-w
need help on 2330 level 2 motors assignment
A circular ring of magnetic material has a mean length of 1m and a cross sectional area of .001m^2.A sawcut of 5mm width is made in the ring . calculate the magnetizing current req
Define the X-NOR or Exclusive-NOR Gate? This is the EX-OR gate with the output inverted, as shown by the 'o' on the output and the output Q is true if inputs A and B a
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