Exam Details
| Subject | control systems | |
| Paper | ||
| Exam / Course | b.tech | |
| Department | ||
| Organization | Vardhaman College Of Engineering | |
| Position | ||
| Exam Date | May, 2018 | |
| City, State | telangana, hyderabad |
Question Paper
Hall Ticket No:
Question Paper Code: A3212
VARDHAMAN COLLEGE OF ENGINEERING
(AUTONOMOUS) B. Tech IV Semester Regular/Supplementary Examinations, May 2018
(Regulations: VCE-R15) CONTROL SYSTEMS
(Electrical and Electronics Engineering) Date: 15 May, 2018 FN
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit
All Questions Carry Equal Marks
Unit I
1.
Define closed loop control system. with a neat diagram explain closed loop control system. List the advantages and disadvantages of closed loop system.
9M
For the mechanical system shown in Fig. 1 below, write the differential equations for the system.
Fig. 1
6M
2.
Explain different classifications of control systems.
8M
Write the differential equations for the mechanical system having friction less wheels shown in Fig.2.
Fig. 2
7M
Unit II
3.
Obtain using block diagram reduction rules.
Fig. 3
9M
Write a brief note on synchro transmitter receiver.
6M
Cont…2
2
4. Using Mason's gain formula determine for the signal flow graph shown in Fig.4.
where k=1 and
Fig. 4
9M
Derive the transfer function of field controlled DC servo motor.
6M
Unit III
5. Briefly discuss the different rules for constructing the root locus. 6M
A second order system is given by Find rise time, peak time,
peak overshoot and settling time if subjected to unit step input.
9M
6. Find Kp, Kv and Ka and steady state error for a system with open transfer function
9M
Derive the time domain expression for for a second order system excited by unit
step signal.
6M
Unit IV
7. Write a brief note on the limitations of frequency domain analysis. 6M
Determine the transfer function of the system whose magnitude plot w1=5 and w2=500
is shown in Fig.5 below.
Fig.5
9M
8. Briefly describe the steps to solve problems by Nyquist criterion. 7M
Consider the system with transfer function
1
1 2
G s H s
s s
. Draw its polar
plot.
8M
Unit V
9. Obtain the state model of the system whose transfer function in CCF form given as
11M
What are the characteristics of lag compensation? When it is employed.
4M
10. Describe the procedure to find controllability and observability of a system with an
example.
8M
Consider the matrix A compute state transition matrix where.
Question Paper Code: A3212
VARDHAMAN COLLEGE OF ENGINEERING
(AUTONOMOUS) B. Tech IV Semester Regular/Supplementary Examinations, May 2018
(Regulations: VCE-R15) CONTROL SYSTEMS
(Electrical and Electronics Engineering) Date: 15 May, 2018 FN
Time: 3 hours
Max Marks: 75
Answer ONE question from each Unit
All Questions Carry Equal Marks
Unit I
1.
Define closed loop control system. with a neat diagram explain closed loop control system. List the advantages and disadvantages of closed loop system.
9M
For the mechanical system shown in Fig. 1 below, write the differential equations for the system.
Fig. 1
6M
2.
Explain different classifications of control systems.
8M
Write the differential equations for the mechanical system having friction less wheels shown in Fig.2.
Fig. 2
7M
Unit II
3.
Obtain using block diagram reduction rules.
Fig. 3
9M
Write a brief note on synchro transmitter receiver.
6M
Cont…2
2
4. Using Mason's gain formula determine for the signal flow graph shown in Fig.4.
where k=1 and
Fig. 4
9M
Derive the transfer function of field controlled DC servo motor.
6M
Unit III
5. Briefly discuss the different rules for constructing the root locus. 6M
A second order system is given by Find rise time, peak time,
peak overshoot and settling time if subjected to unit step input.
9M
6. Find Kp, Kv and Ka and steady state error for a system with open transfer function
9M
Derive the time domain expression for for a second order system excited by unit
step signal.
6M
Unit IV
7. Write a brief note on the limitations of frequency domain analysis. 6M
Determine the transfer function of the system whose magnitude plot w1=5 and w2=500
is shown in Fig.5 below.
Fig.5
9M
8. Briefly describe the steps to solve problems by Nyquist criterion. 7M
Consider the system with transfer function
1
1 2
G s H s
s s
. Draw its polar
plot.
8M
Unit V
9. Obtain the state model of the system whose transfer function in CCF form given as
11M
What are the characteristics of lag compensation? When it is employed.
4M
10. Describe the procedure to find controllability and observability of a system with an
example.
8M
Consider the matrix A compute state transition matrix where.
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