Using a block diagram, show how to implement the following roll-off rates using a single-pole and a two-pole with Butterworth responses. Implement these filters as low-pass. (a)-60 dB/decade (b) -100 dB/decade  (c)   -40 dB/decade (d)   -20 dB/decade (e)   -120 dB/decade

For a Fixed bias circuit having Rc-2.2K0, RB-2400, Vcc=12v and current amplification factor is 100 and the current flowing through the base is 20µA, the value if Collector current in saturation is 3mA O OA O 5.4mA O 1mA

(b) Block diagram of a system with unity feedback is illustrated as R(s) Y(s) K G(s) Figure Q3(b) and the transfer function is given as 50000 G(s) = s² + 150s + 5000 From the given block diagram and transfer function, sketch an approximate magnitude and phase of Bode Plot. Choose any value of K that you might think will simplify your sketching. There is no requirement of K value in this sketching process. The selection of Kis only necessary if you have a particular design requirement.

D(s) проработат H₂ R(s) C(s) For the following block diagram derive the closed loop transfer function by using; a) Reduction rules b) Mayson formula