Source encoding in a data communication system is done in order to

For a random variable 'X' following the probability density function, p (x), shown in figure, the mean and the variance are, respectively.

The maximum power efficiency of an AM modulator is

Block diagram model of a position control system is shown in figure.
(a) In absence of derivative feedback (K_t=0) , determine damping ratio of the system for amplifier gain K_A=5. Also find the steady state error to unit ramp input.

(b) Find suitable values of the parameters K_A and K_t so that damping ratio of the system is increased to 0.7 without affecting the steady state error as obtained in part (a).