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Calculate the N.A of a step index fibre having n1=1.48 and n2=1.46. What is the maximum entrance angle ψmax for this fibre if the outer medium is air with n1=1.0? Given n1=1.48 n2=1.46We know that numerical aperture, Sinψ = (n12- n22)½= (1.482- 1.462)½ =0.2425 ψmax= sin-1(0.2425) = 14.03°
Q. Explain topology method used in LAN technology? Ans: LAN Topologies: Network topology is a physical schematic which demonstrates interconnection of the many users. Th
i am Eectrical engineer and i want to teach students on line mode. let me know the procedure. thanks pushpendra
Scale-space pyramids Write an m-file "scale_space.m" which computes scale space representation of an input image for a given scale "sigma" and displays them. (i) 4 scale
A ¼-hp, 230-V, 60-Hz, four-pole, single-phase inductionmotor has the following parameters and losses: R 1 = 10 , X l1 = X l2 = 12.5 ,R 2 = 11.5 , and X m = 250 . The core
What are the broad principals that will be applied in product design to facilitate automated assembly ?
Describe 74LS139 memory decoder. The 74LS139 is a dual 2-to-4 line decoder. This contains two separate 2-to-4 line decoders - all with its address, output and enable connection
Discuss the modes of connection for polyphase transformers Discuss with aid of electrical grouping and wiring connection diagrams the different types of connections for polypha
Q. Explain biased and double clipper circuits. Clipper can be either forward biased or reverse biased. If a battery is connected in series with the diode in a positi
Q. Show NPN Common Collector Amplifier? The common collector amplifier, often called an emitter follower since its output is taken from the emitter resistor, is useful as
Q. What is the need of MODEM in data communication? Need of Modem: Modems are used to interface computers, computer networks in addition to other terminal equipment to teleco
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