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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).
1) Assume that we are given the continuous-time signal xa (t) = xa1 (t) + xa2 (t) + xa3 (t), where, xa1 (t) = 2 + cos3 (2pf1 t + p 3 ) + 2 cos(2pf2 t), xa2 (t) = 2 cos(2pf3 t)
Charge density In a semiconductor
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A 100-kW, 250-V shunt generator has an armature-circuit resistance of 0.05 and a field- circuit resistance of 60 . With the generator operating at rated voltage, determine the i
Normal 0 false false false EN-IN X-NONE X-NONE Life Interactive UPS Systems
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Discuss some features of Pentium series of microprocessors. The Pentium is a CISC microprocessor, 32-bit superscalar. The term superscalar is utilized for the processor that
Explain iron and silicon iron alloys. Iron: Galvanised steel and iron wires that are usually used for earth conductor in low voltage distribution systems may also be utilize
how over compensation by capacitive var rises voltage in a circuit?
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