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Define and explain Numerical aperture?
Figure shown below shows an incident ray to the fibre,
The light bends at two interfaces, one at the air- core interface and the other is the core cladding interface.At the first interface, we can writen sin O0 = n1 sin O ---------(1)but minimum value of Ø is Øc where Ømax = 90 - Øc, then (1) becomes n sin Omax = n1 sin Ømax = n1 sin (90 - Øc)n sin Omax = n1 cos Øc.............(2)at the second interface, we can writen1 sin Oc = n2 sin 90sin Oc = n2/n1 ........(3)therefore cos Oc = (1- sin2 Oc)1/2 cos Oc = [1- (n1/n2)2]1/2(2) becomes n sin Omax = (n12 - n22)1/2 this is called numerical aperture (NA) of the fibre.NA = (n12 - n22)1/2
Off line UPS System Again the two switches are used in this type of ups as online ups. The difference is that here the main static switch remains normally ON and UP
Interrupt latency refers to the amount of time among when an interrupt is triggered and when the interrupt is observe by software.
HLT Halt Instruction The microprocessor halts the execution of the program and enters into the wait state the address and data bus are placed in the high impedance st
a) What is meant by Ripple Voltage? Measure the Ripple Voltage Amplitude, Frequency and DC Offset b) Describe how Ripple Voltage could be decreased.
Q. Show the familiar electric sources? Batteries and ac outlets are the familiar electric sources. These are voltage sources.An ideal voltage source is one whose terminal volta
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For the circuit in figure, find: a) Total resistance b) Total current c) Current flow through resistor 6Ω and 4Ω
Define some Illustrations of Common Control Characters? Illustrations of common control characters include: Carriage return (ASCII code 0Dh), which positions the cu
How clock signal is generated in 8086?what is the maximum internal clock frequency of 8086? Clock input 33% square wave from external clock generator .the external clock genera
A 6 V / 2.5 mA relay is connected in the output stage of a transistor. The coil is made of aluminium having α = 0.004. The resistance of the coil is 600 ? at 32 o C. Calculate th
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