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Electric and engineering
1.A purely imaginary signal has a purely imaginary Fourier transform. is this true? and why?
2.The signal e3t is input to a system with transfer function H(s) = (s**3 - s + 1 )/((s + 2)2(s + 3)). What is the output?
What is resistance?Explain the term resistance combination?
What is the principle behind CRT(CATHODE RAY OSCILLOSCOPE), and How this method is simplified in LCD and LED. Is the same CRT principle used in LCD and LED Televisions. If no what is the principle used in LCD and LED Tvs.
What is the resolution of an ADC with a word length of 12-bits and an analogue signal input range of 100 V A sensor produces a maximum analogue output of 5V. What word length is required for an ADC if there is to be a resolution of 10mV
Design a Mealy sequential machine with two inputs A and B, and one output Z. Output Z generates 1 if: (a) A had the same value at each of the two previous clock ticks, or (b) B has been 1 since the last time that the first condition was true.
A system is called complex if a real-valued input can produce a complex-valued output. Suppose a linear, time-invariant complex system has an impulse response of h(t)= j[u(-t+2)-u(-t)]
An alarm is powered by 120 VAC, and the on/off state of the alarm is controlled by an EM relay. Design the interface between a computer output port and the EM relay. The dropout voltage is 3.5 V, and the coil current needs at least 100 mA. Limit t..
air expands through a nozzle at a rate of 1kg/sec. the outlet is at 15kpa and the inlet is at 400kpa,150degree and 35m/sec. assuming the process to be reversible and adiabatic, what is the exit velocity.
Use a 5nF capacitor to design a series RLC bandpass filter in series. the center frequency of the filter is 8kHz, and the quality factor is 2. perform the analysis in Pspice and graph the transfer function on the y axis vs.
Write a 68000 assembly program to subtract two strings of A15 ASCII characters. The first string is stored starting at $502030. The second string is stored at location $302510. The ASCII character in location $502030 of string 1
Consider a long wire represented as distributed RC sections. The total wire length is 5mm. To reduce the wire delay, we uniformly insert n buffers along the wire. Suppose r=12Ohms/m and c=0.2fF/m and the delay of each buffer is 1ns.
1. Starting from a uniform distribution between (0,1). i. Generate a sequence of Rayleigh distributed random variable. (parameters: a=0, b=1).
The trees can be harvested early at reduced yield: the net profit is then $250T per $1,000 initial investment, for T in years. To the nearest whole year, at what T is the rate of return largest
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