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03000EE303092002

PART ‏تا‎
‎Answer any two full questions, each carries 10 marks.
Explain the Mason's gain formula for the derivation of transfer function with a

suitable example.

Analyse the effect of feedback block H(s) on the characteristic equation and
pole-zero locations of the closed loop system having
G 2 ⋅⋅ 1 ⋅⋅
(s)= > _ with: i) H(s)=- ; ii) H(s)=s
(s~ +45+4) 5
Determine the unit step response for the system with transfer function

1

T(s)=—,———
(s~ +4s+5)

. Also determine peak overshoot (M,) and peak time

(tp).
Explain the features and control applications of Tacho generators.

Derive the transfer function of the Field controlled DC servo motor and hence

explain the system characteristics?

How does an automatic control system differ from an open loop system.
Mention at least four general control system components required for the
modification?

PART C

Answer any two full questions, each carries 10 marks.

Test the stability of the unity negative feedback system with
16

G(s) = ವುದು ப பபப
‏و‎ (8 5” +s 4 + 88 3 + ‏و6‎ 2 + 20s + 8)

using Routh's © stability

criterion. Hence identify the location of roots of the system.

Explain how does the type of the system control the steady state error for a ramp
input?

Determine the _ stability of the closed 1000 system with
K(s+1)

G(s)H(s)= எத ‏پچ‎
‎(ऽ +4s+8)

using Root locus plot. Hence, determine the

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