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Q. In an AM transmitter that transmits a total power of 1 kW, the unmodulated carrier power is 850 W. Compute the required value of (Si /Ni )AM at a receiver, if (S0/N0)AM = 2ηAM(Si /Ni )AM must be 103 for good performance.
History of Transistor: The great Physicist Julius Edgar Lilienfeld filed the first patent for a transistor in Canada in the year 1925, explaining a device identical to a Field
Q. Sketch the asymptotic Bode plots for the following loop-gain functions, and find the approximate values of gain and phase margins in each case.
Define ruled surface and surface of revolution. Illustrate in detail B-spline and cubic Bezier surfaces with their important properties.
Break over voltage of Finger Voltage The minimum forward voltage when the gate is opened at which SCR starts conducting heavily is called the break over voltage. To
Q. Name all the switching schemes used in a digital exchange. How call processing occur? Ans: The basic types of switching systems used are: 1. Stronger Switching System
Q. Show Power and Power Factor in ac Circuits? Power is the rate of change of energy with respect to time. The unit of power is a watt (W), which is a joule per second (J/s). T
what is the need of coupling
Q. Explain the Methods of Analysis for digital system? Just as differential equations are used to represent systems with analog signals, difference equations are used for syste
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A three-phase, 400-V, wye-connected induction motor takes the full-load current at 45 V with the rotor blocked. The full-load slip is 4%. Calculate the tappings k on a three-phase
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