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Q. For a pyramidal-horn antenna, the maximum directive gain is given by
occurring when the aperture dimensions are A ∼ = √3λLandB = 0.81A. The principal-plane beam- widths for the optimum horn with maximum gain are given by θB ∼ = 54λ/B in degrees in the yz- plane, and by φB ∼ = 78λ/A in degrees in the xz- plane. For a pyramidal horn, with A = 6λ and B = 4.86λ, at 6 GHz, ?nd GD, θB, and φB. Comment on whether this horn is optimum.
Illustrate the construction and working of:- (i) Pressure Thermometer (ii) Selective Radiation Pyrometer (iii) Thermistor (iv) Laws of Thermocouple
compear copper and aluminum conductore in termes of price ,weight,resistance for equal length .
Q. How does current flow through the channel of a JFET after pinch off? It is seen that above the pinch off voltage at a constant value of VDS (saturation drain current, ID inc
Q. Basic working of Star Topology? In Star topology, all user nodes are connected to central node point that interconnects all individual users links and nodes. Data flows from
Explain the Meaning of Duality in Boolean Algebra? Any algebraic equality that derived from the axioms of the Boolean algebra remains true when the operators OR and AND are in
The growth in communications over the past 60 years has been phenomenal. The invention of the transistor in 1947 and the integrated circuit and laser in 1958 have paved the way to
Q. Explain Integral-error or reset control? A control system is said to possess integral-error control when the generation of the output in some way depends upon the integral o
What are wired and wireless transmission systems? Transmission Systems: Modern long distance transmission systems can be placed under three main categories: 1. Radio Sy
1- Φ Half Bridge Inverters 1-Φ bridge inverter may be of two type 1-? half bridge and 1-? full bridge inverter. 1-? half bridge inverter with resistive load to explain
Higher order Address Bus The 8085 microprocessor has 8 pins dedicated to higher order address A15 - A8. These pins are used to connect higher order address bus. These p
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