In a BPSK signal detector, the local oscillator has a fixed phase error of 20⁰. This phase error deteriorates the SNR at the output by a factor of

An image uses $$512\, \times \,512$$ picture elements. Each of the picture elements can take any of the 8 distinguishable intersity levels. The maximum entropy in the above image will be

The steady state error of a stable 'type 0' unity feedback system for a unit step function is

An electromechanical closed-loop control system has the following characteristic equation $$s^3+6Ks^2+\left(K+2\right)s+8\;=\;0$$, where K is the forward gain of the system.The condition for closed loop stability is