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Explain Corrosion.
Corrosion: The process of constant eating (or destruction) up of metals (by the surface) by the surrounding is termed as corrosion. These metals are corroded while exposed to the atmosphere. The metals are usually converted in their oxides. Such oxide covers the surface of the metal that results in the destruction of the metal. Rusting of iron is general illustration of corrosion in that iron makes iron oxide with oxygen of the atmosphere. This iron oxide covers the surface in the form of brownish powder. Thus, the conducting material must be corrosion resistant.
Explain the Asynchronous Up-Down Counters? In some applications a counter must be able to count both down and up and the circuit below is a 3-bit up-down counter. It counts do
Q. Explain about Common Channel Signalling? Common Channel Signalling (CCS), centralized maintenance and automatic faultdiagnosis and interactive human-machine interface are so
Q. What is the function of CT and P.T and where they are used? Ans: The full form of CT is Current transformer and is used for calculating of current. The full form of PT is
current and voltage
Q. A 75-kVA transformer has an iron loss of 1 kW and a full-load copper loss of 1 kW. If the transformer operates on the following load cycle, determine the all-day efficiency:
Write a short note on dispersion shifted and dispersion flatted fibers? The dispersion features of a fiber is display below: The overall dispersion is the sum of materi
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Consider the circuit of Figure and obtain the complete solution for the voltage v C (t) across the 5-F capacitor and the voltage vx(t) across the 5- resistor.
Q. In an AM transmitter that transmits a total power of 1 kW, the unmodulated carrier power is 850 W. Compute the required value of (S i /N i )AM at a receiver, if (S 0 /N 0 )AM
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