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A radar antenna transmits 50 kW at 10 GHz. Assume transmission is in a narrow beam, 1 m2 in area, and that within the beam, waves are plane waves. The wave is re?ected from an aircraft but only 1 % of the power propagates in the direction of the antenna. If the airplane is at a distance of 100 km, calculate the total power received by the antenna. Assume permittivity and permeability of free space.
In a MOS cascode amplifier, the cascode transistor is required to raise the output resistance by a factor of 40. If the transistor is operated at Vov = 0.2 V, what must its Va be. If the process technology specifies V'a as 5 V/um, what channel len..
the telephone company has a fiber-optic line with time division multiplexing that runs from the united states to
A temperature of 200 oC is measured using a thermopile having three pairs of measuring junctions as shown in the figure below. The reference junction temperatures are set at room temperature of 25 oC.
The messages being sent are 2 milliseconds long. Computer A starts sending a message on the bus; 250 microseconds later, Computer B starts to send a message, and 250 microseconds after that, Computer C starts to send a message.
If it is known that an electric dipole is located at the origin andthat its E-field at the point P(2[m], 30°, 90°) isE=4âθ[V/m],find the magnitude and direction of the dipole moment p.
Determine the dc voltages, VB, VE, and VC, with respect to ground in Figure 3-74. Determine the voltage gain for the CE amplifier in Figure 3-74. Determine IC(sat) for Q1 and Q2 in Figure 3-43.
Design a PLC program and prepare a typical I/O connection diagram and ladder logic program for the following motor control specifications:1) A motor must be started and stopped from any one of three start/stop pushbotton stations.
determine the time it takes to process the multiplication operation in the binary multipler described. Assume that the Q register has n bits and the clock cylcle is t nanoseconds.
In a piezo electric accelrometer circuit which is being used to find out the effect of load capacitance a coaxial lead is used instead of a normal 'unshielded' wire, why is a coaxial lead used
Consider a 16-ary PSK system with symbol error probability PE=10-5. A Gray code is used for the symbol to big assignment. What is the approximate bit error probability. Repeat for a 16-ary orthogonal FSK system.
Needs to oscillate 5 times per second. Amplitude envelope increases 25% every second. Amplitude is 1 at t =0. The derivative at t = 0 is 54.6371. the sinusoid has to be a cos(2*pi*5*t) for the exponential exp(at).
An induction motor has the following specifications: a 8-polesquirrel cage rotor, operates at 25 hp off of a 220 V line-to-line3-phase service, 60 Hz, 64 amps of line current, and under fullload runs at 830 RPM. The motor draws 20.8 kW at full loa..
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