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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.
Impurities in Semiconductors Can be added in accurately controlled amounts. Can modify the electronic and optical properties. Used to change conductivity over wide ra
what ie the use of mutual inductance in a hartley oscillator
Multiplexed Address/ Data Bus Pins AD 7 - AD) are used for multiplexed address data bus. This bus is bidirectional input output and serves two purpose. Initially the bus
input impedence
Decision Making The rhombus diamond symbol is used to represent the decision making process as shown below. Figure De
Q. Consider a 1-bit version of the digital comparator shown in Figure. Note that the operation of this circuit is such that whichever output is 1 gives the desired magnitude compar
Q. Given the following truth table: (a) Realize the function f by a K map using 0s. (b) Realize the function f by a K map using 1s.
Applications of high resistivity materials
Factors Contributing To High Technical Losses Power distribution systems in developing countries have faced a phenomenal and rapid growth within the last two decades. Although
(a) Draw and illustrate the V-I characteristics of PN junction diode. How the characteristics reflected with change in temperature? (b) Describe physically why a PN junction dio
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