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Electronics and Communication Control Systems Difficulty: Medium

In a baseband communications link, frequencies upto 3500 Hz are used for signaling. Using a raised cosine pulse with 75% excess bandwidth and for no inter-symbol interference, the maximum possible signaling rate in symbols per second is Consider the following for a variable reluctance stepper motor used in system: 1. The stator torque acting on the rotor is a function of angular misalignment between stator and rotor teeth. 2. There are two positions of zero torque: $$\theta = {0^ \circ },\,\frac{{{{180}^ \circ }}}{{\text{T}}}$$ (T = number of rotor teeth) 3. Both the torque zero positions are stable. 4. As the stator is excited, the rotor is pulled into the nearest minimum reluctance position. Of these statements A closed loop system is shown in the above figure. What is the ratio of output frequencies $$\frac{{\omega \left( {{\text{for }}K = 32} \right)}}{{\omega \left( {{\text{for }}K = 16} \right)}}?$$ A source produces 4 symbols with probability $$\frac{1}{2},\frac{1}{4},\frac{1}{8}$$ and $$\frac{1}{8}$$ For this source, a practical coding scheme has an average codeword length of 2 bits/symbols. The efficiency of the code is The root locus of the system $$G\left( s \right)H\left( s \right) = \frac{K}{{s\left( {s + 2} \right)\left( {s + 3} \right)}},$$ has the break-away point located at