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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.
Explain time division switching? Time Division Switching: A switching element can be shared by number of concurrently active speech circuits. It is the princi
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.
what is Tabulation Method?
What is the purpose of clock signal in an 8086 system? 8086 needs clock signal with 33%duty cycle from some external operations.8086 processor needs 5 MHZ clock signal
Common base configuration: for pap transistor connection for common base operation is as follow: common base means base is common to both input and output side of configurati
Explain Fourth group of 32 ASCII character code? The fourth, and final, group of 32 ASCII character codes are set aside for the lower case alphabetic symbols, five additional
Types of Power Diode According to their reverse recovery characteristics of power diodes it can be classified as follows: a. General purpose diodes b. Fas
In most real signal processing applications the measured signals can not be described by an analytical expression. In addition, by the Wold decomposition theorem a stationary signa
explain all the components involved in transmission of electricity
Voltage divider with AC bypasses capacitor: Figure: Voltage divider with capacitor The standard voltage divider circuit that is discussed above faces a drawback - A
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