# PTU B.Tech Aero Engineering? 6th Semester May 2019 60530 AUTOMATIC FLIGHT CONTROL Question Papers

PTU Punjab Technical University B-Tech May 2019 Question Papers 6th Semester Aerospace Engineering?

Roll No.
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech. (ANE) (Sem.?6)
AUTOMATIC FLIGHT CONTROL
Subject Code : ANE-321
M.Code : 60530
Time : 3 Hrs. Max. Marks : 60
INSTRUCTIONS TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.

SECTION-A
1.
(10 ? 2)

a) Transfer function

b) Compensation

c) Open loop control system

d) Stability derivatives

e) Bode plot

f) Significance of signal flow graphs

g) Classical control theory

i) Gain margin

j) Multivariable system

1 | M- 60530

(S2)-94

SECTION-B
2.
Write a note on `Forward path Compensation'.
5
3.
Sketch a root locus plot for a typical control system while explaining the rules for
graphical construction of root locus plot.
5
4.
Define and differentiate between `Displacement Autopilot' and `Pitch Displacement
Autopilot.
5
5.
Write a note on `Instrument Landing System'.
5
6.
Write a note on `Routh-Huritz criterion'.
5

SECTION-C
7.
Given the following transfer function, determine the steady-state error of the system to
unit step, ramp and parabolic input :
10
k(s 2)
G(s) H (s)

s(s 1) (s 4) (s 5)
8.
Determine whether the characteristic equations given below has stable or unstable roots.

(2 ? 5)

a) 23 + 42 + 4 + 12 = 0

b) 3 + 62 + 12 + 8 = 0
9.
Explain the following controllers with the help of examples :
(2, 2, 3, 3,)

a) Proportional Controller

b) Integral Controller

c) PI Controller

d) PID Controller

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