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A 10 GHz radio link is established between two antennas separated by 40 Km , find the necessary height of the antennas , assume equal antenna heights and standard atmospheric conditions.
Derive an iterative formula for finding the roots of cos(x) = x with Newton's method. Starting with an initial guess of x = 5 radians, determine the estimate of the root after five iterations. How many iterations are needed to get f
Two transmitters send messages through bursts of radio signals to an antenna. During each time slot each transmitter sends a message with probability 1/2. Simultaneous trans- missions result in loss of the messages.
A somewhat discharged automotive battery has an open-circuit voltage of 12.5 V and supplies 50 A when a 0.1 Ohms resistance is connected across the battery terminals. A) Find theThevenin equivalent voltage for the circuit.
A 120 V separately excited DC Motor is operated at a fixed field current. It has an armature resistance Ra = 10 ohms, and a machine constant K = 0.1 V/rpm. The armature current is 0.5 amps with no load, and 3.0 amps at full load.
Three towns A, B & C are situated at the corners of an equivalent triangle of side 30 km. It is proposed to supply power to extent of 30 MW, 10 MW, 20 MW to A, B & C respectively from one substation. Where should substation be located to minimize ..
A certain microphone is capable of delivering 0.5V when someone clap their hands at a distance of 20ft. A particular electronic switch has a Thevenin equivalent resistance of 670ohm and requires 100mA to energize.
Each of the protons in a particle beam has a kinetic energy of 3.30 10-15 J. What is the magnitude of the electric field that will stop these protons in a distance of 1.05 m
Control Systems- PID Controller, Which one of the following statements regarding the operation of a PID controller is definately false?
Suppose you are to construct a logic circuit with inputs {A,B,C} and output {F} The logic is such that "F" is asserted only when "A" or "B" are asserted and "C" is not. First draw and complete the truth table
Several of the voltages associated with certain circuit are given by V12 = 9 phase angle 30 degrees V, V32 = 3 angle 130 degrees V, and V14 - 2 angle 10 degrees V. Determine V21, V13,, V34 and V24
an automobile travels 1200ft in 30s while being accelerated at a constant rate of 1.8 ft/s^2. Determine (a) its initial velocity, (b) its final velocity, (c) the distance traveled during the first 10s
A four pole DC machine has a wave winding of 300 turns. The flux per pole is .025 webers. The DC machine rotates at 1000 RPM. Determine the generated voltage and the kW rating if the current through the turn is 25 amps.
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