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Why radio waves are chosen for Remote & close range transmission? and how HOW TO CONSTRUCT A SIMPLE RADIO RECEIVER ?
In Astable multivibrator (using OP-AMP) and Butterworth 2nd order filter(using OP-AMP)(both high pass & low pass filter), both positive and negative feedback are given. But in Astable mutivibrator positive feedback dominates
A 2 GHz and 100 Watt transmitter is connected to a transmitter antenna with a gain of 12 dB. A 20 dB receiving antenna is placed 10 kilometers away, in what we assume to be free space, in the direction of maximum gain.
Determine the value of the constant c such that the following functions are valid probability functions: A. p(x) = cx/20, x = 1,2,3,4,5,6 and zero elswhere. B. p(x) = c(X^2 + 1), x = 1,2,3,4,5, and zero elsewhere.
A serial RLC circuit is connected to a 24 DC voltage source att=0: The output y(t) is the voltage on the capacitor one sideof which is connected to the ground. L= 1 Henry, R=2.5 Ohms and C= 1 Farad. The circuit is at restfor t
An 80KHz sinusoidal voltage has zero phase angle and a maximum amplitude of 20 mV. When this voltage is applied across the terminals of a capacitor, the resulting steady state current has a maximum amplitude of 0.7 mA.
consider a simple thermostat controller with three inputs and twooutputs. the inputs consist of two user-operated swutches(A,W) and one temperature sensonr T. T=1and T=0 mean the actualroom temp is above and below the desired value, respectively.
Determine the Fourier Series Coefficients Ck for the output y(t) ofan LTI system with impulse response h(t)=e^(-t) u(t) to the inputx(t)=cos2t + sin3t
Basics problems of Induction motor, The frequency of the induced rotor currents in the rotor of a 60 Hz induction, machine is 2 Hz. Furthermore, the fields in the air gap turn at -40 rpm with respect to the rotor.
1 given that the frequency deviation constant kf is 5 khzvolt what is the required amplitude of the modulating signal
Also assume the house power wiring Has the two wires routed around the floor and ceiling. Determine the induced voltage at the power input to a digital computer that is connected to the power net for a lightning channel 1 km away.
If the battery is replaced with a 6 Volt battery it was experimentally determine that the no load speed is reduced to 120 rpm. For this situation, determine a new equation for angular velocity,(in rad/sec) versus Torque (in Nm).
Plot the reflection coefficient for 4 pairs of quarter-wave coated substrate for acrylic/diamond coating-pairs on fused silica substrate. Your plot should be as a function of wavelength range from 400 nm to 1 micrometer.
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