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A 100 m-long RG 58 coax cable is terminated with 150 Ω impedance.
(a) Find the reflection coefficient.
(b) If a very short, 10 V pulse is launched at the input, calculate the time it will take for the pulse to return to the input and voltage be.
A shunt-connected a DC motor has zero rotational losses and RA = 0. Assume that RA and Radj is constant [except in part (d)] and that φ is directly proportion to field current. For VT= 200 V and Pout = 2 hp.
Telephone channels and PCM analysis, The analog to digital converter (ADC) used in a telephone system outputs 8 bit words. The digital words are transmitted as a serial stream to form a PCM voice signal
Phase distortion - the phase response is not linear with frequency inside the frequency band of interest. Different frequency components are subject to different delay in passing through the system.
The arrival rate of calls at a mobile switiching station is 1 per second. The probability of k calls in a T second interval is giving by poisson PMF with h=arivial rate x T. What is the probability that there will be more than 100 calls placed in ..
The light from a cameras electronic flash is produced when a high voltage obtained by charging a capacitor is applied to electrodesin a xenon-filled flash bulb. (a) to what voltage would a 60-microfarad capacitor be charged by a6mA current lasting ..
A synchronous sequential machine is to have a single input line and a single output line. Draw a State Diagram (Mealy) and check for redundancies and Then assign binary State Identifiers
The discrete-time signal x[n] is actually the result of sampling a periodic continuous signal x(t). The signal x[n] is 1 from -12 to +12, zero from n = 13 to 87 and then it repeats. What is the positive frequency (in hz) of the Null Bandwidth
How do circuits work?- explain and show a diagram.
Design a second-order banpass filter with center frequency f=10. The gain should be zero at t=0 and t= 8. Select poles at -a ±j10. Explain the influence of a on the frequency response.
A 4 to 20mA control signal is loaded by a 100Ohm resistor and must produce a 20 to 40V motor drive signal. Develop the equation relating the input current to the output voltage.
A number of SCRs, each with a rating of 2000V and 50A are to beused in series-parallel combination in a circuit to handle 11KV and400A. For a derating factor of 0.15, calulate the number of SCRs in series and parallel units.
Derive the state diagram for an FSM that has an input w and an output z. The machine has to generate z = 1 when the previous four values of w were 1001 or 1111; otherwise, z = 0. Overlapping input patterns are allowed.
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