STUPIDSID
1(a)
Find the transfer function from the signal flow graph given fig.1
5 M
1(b)
Find the steady-state errors due to units step and unit ramp inputs for a unity negative feedback system whose open loop transfer function is [G(s) =dfrac{K}{s(s+1)}\]
5 M
1(c)
Find the position and velocity error coefficient for the system with open loop transfer function [G(s) =dfrac{50}{(1+0.1s)(1+2s)}\]
5 M
1(d)
Determine the stability of the system that has the transfer function[G(s) =dfrac{G(s+1)}{(s^{4}+2s^{3}+9s+6)}\]
5 M
2(a)
For the RLC netwrok shown in fig 2(a),determine Transfer function State space equation
5 M
2(b)
Consider the block diagram of a system In fig 2(b).Determine C(s)R(s) using block reduction techniques
10 M
3(a)
Open loop gain of a unity feedback system is [G(s) =dfrac{200}{s(s+2)}\] Determine,when the system is excited by unit step input
Damping coefficient
First overshoot
Since the system is under damped, and hence non-periodic,why should it have a damped frequency/
Damping coefficient
First overshoot
Since the system is under damped, and hence non-periodic,why should it have a damped frequency/
6 M
3(b)
The transfer function of a system is given by
[dfrac{C(s)}{R(s)}=dfrac{K/T}{s^{2}+dfrac{1}{T}s+dfrac{K}{T}}
It is desired to reduce the overshoot from 60% tp 20% by varying k and keeping T constant.By what factor K should be reduced?
[dfrac{C(s)}{R(s)}=dfrac{K/T}{s^{2}+dfrac{1}{T}s+dfrac{K}{T}}
It is desired to reduce the overshoot from 60% tp 20% by varying k and keeping T constant.By what factor K should be reduced?
14 M
4(a)
The partial Routh array of a unity feedback system is given below
10 M
4(b)
The characteristic equation of a system is [s^{4}+20s^{3}+10s^{2}+s+k=0.find
The range of K for which system is stable
frequency of oscillation
The range of K for which system is stable
frequency of oscillation
10 M
5(a)(i)
Describe the working principle and construction of a servo motor
Give its application in control system
6 M
5(b)
derive the sensitves STH and STG of a feedback control system where T is the closed loop gain H is feedback gain and G is the loop gain of the system.
8 M
5(b)(ii)
Compare the method of determining stability of a system by Nyquist plot and Bode plots.
6 M
6(a)
Draw the Bode plots for the circuits shown in fig
10 M
6(b)
State Mason gain formula (2 marks)
From the block diagram shown in fig.draw the corresponding single graph evaluate the transfer function of the complete system using Manson gain formula
10 M
7(a)(i)
Define 'Gain margin' and 'Phase Margin'.
4 M
7(a)(ii)
Explain their importance in determining the stability of a system.
2 M
7(b)(i)
State the Nyquist criterion for testing the stability of a system
8 M
7(b)(ii)
A closed loop control system is described by the block diagra shown In fig.determine the stability of the system Nyquist criterion
8 M
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