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Q. Explain Wireless electromagnetic channels?
Wireless electromagnetic channels are used in wireless communication systems, in which the electromagnetic energy is coupled to the propagation medium through an antenna that serves as a radiator. The physical size and configuration of the antenna depend mainly on the frequency of operation. For example, a radio station transmitting AM frequency band of 1 MHz (with a corresponding wavelength of λ = c/fc = 300 m) requires an antenna of at least 30 m (approximately one-tenth of the wavelength).
Determine a normalized frequency at 820nm for a step index fibre having 25µm core radius. Given n 1 =1.48 and n 2 =1.46.Also calculate how several modes propagate within this fibre
What is the power of the signal transmitted by powerful cell phones? Ans) The powerful cell phones can transfer a signal of 3 watts.
Using star-delta transformation, calculate the current flow through RL.
charactersticks of pn junction
Q. What do you mean by Companding? In order to lower the crest factor of a waveform, so as to produce better performance, a process known as companding is used. It works like a
#I need some guides in order to build a circuit that will be beneath a machine and turn that machine left/right/up/down
Decimal to Binary Coded Decimal Conversions Step1. Separate the digits in the decimal number Step2. Express each of the digits in their binary equivalent Step3. Combine all o
Q. Explain the high-frequency response of FET amplifier? The analysis for the high frequency response of the FET amplifier is almost the same as that of the BJT amplifier. The
AC Circuit: This topic explain the basic concepts of single and three-phase ac system. Unit provides the thorough analysis and derivations as required by topics. Here we find
industrial approach of speed control of dc series motor
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