ce moDEL
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Reg. No: MODEL EXAMINATION III YEAR/V SEMESTER EE2365 – CONTROL ENGINEERING Date: .10.2015 Duration: 3 Hours Maximum: 100 Marks Answer ALL questions PART – A 10x2 = 20 1. What are the two major types of control system? 2. Define transfer function. 3. What are the basic elements used for modeling mechanical translational system. 4. Write Masons Gain formula. 5. Name the test signals used in control system. 6. What is transient and steady state response? 7. What is servomechanism? 8. Define sampling theorem and zero order hold. 9. What is the necessary condition for stability? 10 . List the types of controllers used in control system. PART – B (5 x 16 = 80 Marks) 11 . a ) i) Determine the transfer function X1(S) / F(S) and X2(S) / F(S) of the mechanical system shown in figure. 1 6 (OR) - 1 -
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Transcript of ce moDEL
Reg. No:
HINDUSTHAN INSTITUTE OF TECHNOLOGY, COIMBATOREMODEL EXAMINATIONIII YEAR/V SEMESTER
EE2365 – CONTROL ENGINEERINGDate: .10.2015 Duration: 3 Hours Maximum: 100 Marks
Answer ALL questionsPART – A 10x2 = 20 Marks)
1. What are the two major types of control system?
2. Define transfer function.
3. What are the basic elements used for modeling mechanical translational system.
4. Write Masons Gain formula.
5. Name the test signals used in control system.
6. What is transient and steady state response?
7. What is servomechanism?
8. Define sampling theorem and zero order hold.
9. What is the necessary condition for stability?
10. List the types of controllers used in control system.
PART – B (5 x 16 = 80 Marks)
11. a
)
i) Determine the transfer function X1(S) / F(S) and X2(S) / F(S) of the mechanical
system shown in figure.
16
(OR)
b) i) With a block diagram explain the concept of flight control systems. 8
ii) With examples explain the concept of open loop and closed loop systems. 8
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Compare.
12. a) i) Obtain the closed loop transfer function C(S) / R(S) of the system whose block
diagram is shown in figure. Use Block diagram reduction technique.
16
(OR)
b) i) Find the overall gain of the system whose signal flow graph is shown in fig.
16
13. a) i) Derive the expressions and draw the response of first order system for unit
step input.8
ii) Measurements conducted on a Servomechanism show the system response to be c(t)=1+0.2 ê 60t-1.2 ê –10 t. when subjected to a unit step. Obtain an expression for closed loop transfer function.
8
(OR)
b) i)A unity feedback control system has an open loop transfer function G(S) =
10/S(S+2). Find the rise time, percentage over shoot, peak time and settling time.16
14. a) i) Plot the Bode diagram for the following transfer function and obtain the gain
and phase cross over frequencies. G(S) = 10/ S (1+0.4S) (1+0.1S).
16
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(OR)
b) i)Sketch the root locus for the open loop transfer function of unity feedback
system given by 16
15. a) i) Compare analog control system with digital control systems and Explain briefly sample & zero order Hold operation. 16
(OR)
b) i) Explain with neat diagram digital PID controllers.8
ii) Using Routh Hurwitz criterion comment about the stability of the system
whose characteristic equation given by 3S5+5S4+6S3+3S2+2S+1=08
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