Deemed University 2009 A.M.I.E.T.E Electronics

g. The initial slope of the Bode plot for a transfer function having a simple zero at origin is

(A) -20 dB/decade. (B) 10 dB /decade.
(C) 20 dB/decade. (D) -10 dB/decade.

h. In state space representation of a control system x = Ax + Bu, the state transition matrix is
(A) . (B) .
(C) . (D) .

i. In reference to frequency domain analysis of a linear control system, the value of M-circles is
(A) . (B) .
(C) . (D) .

j. In the characteristic formula of 2nd order system, , the represents
(A) stability factor. (B) biasing factor.
(C) damping ratio. (D) None of these.



ans any 5 ques. out of 8 ques..
every ques. carries 16 marks.



Q.2 a. For a mechanical system of Fig.1, draw the mechanical equivalent network, write the system equations and obtain of the system. (6)








b. The transfer function of a control system is . obtain the response y(t) to the input where K, a and are constants and is sinusoidal frequency. (10)








Q.3 a. A linear feedback control system has the block diagram as shown in Fig.2. Using block diagram reduction rules, find closed loop transfer function . (8)

Earning:   Approval pending.