Subject Code:2151908
GUJARAT TECHNOLOGICAL UNIVERSITY
--- Content provided by FirstRanker.com ---
BE- SEMESTER-V (NEW) EXAMINATION - WINTER 2020
Subject Name:Control Engineering
Time:10:30 AM TO 12:30 PM
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.
--- Content provided by FirstRanker.com ---
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Comparison between open and closed loop control system. 03
(b) Define:(1)Plant(2)System (3)Controller(4)Disturbances 04
(c) Explain the following terms: (1) State (2) State space (3) State variable (4) State vector. Also Explain advantages of state variable method. 07
--- Content provided by FirstRanker.com ---
Q.2 (a) Write advantage and disadvantages of transfer function 03
(b) Explain mechanics of translation motion with suitable example. 04
(c) Determine the transfer function C(s)/R(s) from the block diagram shown in Figure 1. 07
Q.3 (a) Explain steady state errors for step input. 03
(b) Write advantages of frequency response analysis. 04
--- Content provided by FirstRanker.com ---
(c) Explain transient response specification of a second order control system with neat sketch. 07
Q.4 (a) Explain steady state errors for parabolic input. 03
(b) Write limitations of frequency response analysis. 04
(c) Explain analysis of first order system and unit step response of first order system. 07
Q.5 (a) Define: Bandwidth, Cut-off frequency and Cut-off rate for frequency response specification. 03
--- Content provided by FirstRanker.com ---
(b) Explain Routh’s stability criterion. 04
(c) The open loop transfer function of a system is G(s) H(s) = k / (S(s+2+2j)(s+2-2j)). Solve the complete root locus and comment on the stability of the closed loop system. 07
Q.6 (a) Define:Resonant peak, Resonant frequency and Gain crossover frequency for frequency response specification. 03
(b) Determine the stability of system to s6+2s5+8s4+12s3+20s2+16s+16 using Routh’s criterion. 04
(c) Write general method for drawing root locus with suitable example. 07
--- Content provided by FirstRanker.com ---
Q.7 (a) List various components used in hydraulic control system. 03
(b) Comparison between hydraulic and pneumatic control system. 04
(c)
Q.8 (a) List various components used in pneumatic control system. 03
(b) Comparison between hydraulic and electric control system. 04
--- Content provided by FirstRanker.com ---
(c) Explain hydraulic proportional derivative controller with the help of neat sketch. 07
Date:29/01/2021
Total Marks: 56
--- Content provided by FirstRanker.com ---
This download link is referred from the post: GTU B.Tech 2020 Winter Question Papers || Gujarat Technological University