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

Roll No.

Total No. of Questions : 09

Total No. of Pages : 02

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B.Tech. (ANE) (Sem.-6)

AUTOMATIC FLIGHT CONTROL

Subject Code : ANE-321

M.Code: 60530

Time: 3 Hrs. Max. Marks : 60

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INSTRUCTIONS TO CANDIDATES :

1. SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
2. SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
3. SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.

SECTION-A

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1. Answer briefly : (10 × 2)
   1. Transfer function
   2. Compensation
   3. Open loop control system
   4. Stability derivatives
   5. Bode plot

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   6. Significance of signal flow graphs
   7. Classical control theory
   8. Steady state error
   9. Gain margin
   10. Multivariable system

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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

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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

   G(s)H(s) = (s+2) / s(s+1)(s+4)(s+5)

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8. Determine whether the characteristic equations given below has stable or unstable roots. (2 × 5)
   1. 2?³ + 4?² + 4? + 12 = 0
   2. ?³ + 6?² + 12? + 8 = 0
9. Explain the following controllers with the help of examples : (2, 2, 3, 3,)
   1. Proportional Controller
   2. Integral Controller

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   3. PI Controller
   4. PID Controller

NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.

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