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(a) Some antennas have a physical aperture area A that can be identified and is related to the effective area Ae by Ae = ρaA, where ρa is known as the aperture efficiency. For a circular-aperture antenna with a diameter of 2 m and an aperture efficiency of 0.5 at 4 GHz, calculate the power gain.
(b) Referring to Figure, let two such antennas be used for transmitting and receiving, while the two stations are separated by 50 km. Let the total loss over the link be 9 dB, while the transmitter generates 0.5 W. Find the available received power.
how does Proportional band affect the performance of control system?
Q. Three loads in parallel are supplied by a single phase 400-V, 60-Hz supply: Load A: 10 kVA at 0.8 leading power factor Load B: 15 kW at 0.6 lagging power factor Load C:
draw alogic diagramto implement F=ABCDE using only 3 inputAND gates
where is a zener diode used in a car
Q. Draw the common source drain and transfer characteristics of a JFET. How are they useful? The graph below shows variation of the drain current Id as a function of the drain
Problem: a) Explain types of "Addressing Modes". b) What is the difference between "Rotate" and "Swap" Operations? c) A computer spends a lot of time in moving data from
describe the compensation technique for both Vbe and Icbo
A slight modification of the elevator algorithm for scheduling disk requests is to always scan in the same direction, In what respect is this modified algorithm better than the ele
Assignment
why open loop system is stable and why degree of stability varies in closed loop system
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