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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°
what is scott connection
Financing the power sector projects: Massive investment is required for the targeted expansion of the sector. It has been estimated at Rs. 9 lakh crores in the further 10 yea
Q. Explain the action of a pn-junction with bias. Consider both the forward bias and the reverse bias, and use sketches wherever possible.
explain how we can produce static eletricty?
12. A capacitor is to be constructed so that its capacitance is 0.2µF and to take a p.d. of 1.25kV across its terminals. The dielectric is to be mica which, after allowing a safety
Dielectric Heating Dielectric losses occur in insulating materials. These are same as hysteresis losses in magnetic materials. When an alternating electric field is a
Q. Binary Coded Decimal Addition Now as in conventional decimal addition, Binary Coded Decimal addition is performed one decimal digit at a time. What happens when the sum g
Name the materials used in case of Bimetals and give reasons. Bimetals : Alloy of nickel and iron along with low value of coefficient of thermal expansion are utilized as
What is a co-processor? 8087 NDP (numerical data processor) is also termed as math co-processor that is used in parallel with the major processor for number crunching applicat
Ceramics are good (A) Insulators. (B) Conductors. (C) Superconductors. (D) Semiconductors. Ans: Ceramics are good insulators.
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