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Assume that π(v) is a smooth function of the noise v in the model of Fig. 9.6. Using a Taylor expansion of the distortion measure of Eq. (9.19), determine the curvature term that arises from the noise model π(v)
Figure 9.6
What is the normal or average life expectancy of a Transformer ?
Given a sequence x(n) for 0 ≤ n ≤ 3, where x(0) = 4, x(1) = 3, x(2) = 2, and x(3) = 1, evaluate its DFT X(k) using the decimation-in-time FFT method, and determine the number of complex multiplications.
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).
Suppose that independent missiles A, B, C have probabilities .4, .5, and .6 of hitting the enemy's headquarters, respectively. Assume that the enemy's headquarters will be destroyed with a probability .3,
A complex number with a phase between 90° and 180°(in the 2nd quadrant) is added to a second complexnumber with a phase between -90° and -180° (inthe 3rd quadrant). What is the sign of the realpart of this sum
If we wish to design a communication system which carries voice securely, we need to ensure that others cannot tap into the conversation. In digital transmissions, we can do this by encryption.
Design a system to convert a two digit BCD number into an8-bit binary number. For example, if the input is thirty-five inBCD format (namely 0011 0101 in BCD format), the output should bethirty-five in 8-bit format (namely 0010 0011 in binary forma..
A temperature sensor has a static transfer function of 0.15mV/C and a time constant of 3.3s. If a step change of 22 degrees to 50 degrees C is applied at t=0, find the output voltages at .5s, 2.0s, 3.3s, and 9s. What is the indicated temperature a..
If the potential on the outer surface of the membrane is +70.0 mV greater than that on the inside surface, how much charge resides on the outer surface?
A diode operating at 300K at a forward voltage of 0.4V carriers a current of 10mA. When voltage is changed to 0.42V the current becomes thrice. Calculate the value of reverse leakage current and ? for the diode(assume VT= 26 mV).
A starting torque of 80 Nm is developed in an induction motor by an auto-transformer starter with a tapping of 30%. If the tapping of auto-transformer starter is 60% then the starting torque
A star connected synchronous motor at 187 kVA, 3-V, 2300V, 47A, 50Hz, 187.5 rpm has an effective resistance of 1.5 ohm and a synchronous reactance of 20 ohm per phase. Determine internal power developed by the motor when it is operating at rated c..
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