STUPIDSID
1 (a)
Differentiate between microprocessor and microcontroller.
5 M
1 (b)
How steady state error of a control system is determined? How it can be reduced?
5 M
1 (c)
Obtain the transfer function of the system defined by the following state-space equations: \[ \begin{bmatrix}x_1\\x_2 \\x_3 \end{bmatrix} = \begin{bmatrix}
0 &1 &0 \\0 &0 &1 \\-5 &-25 &-5 \end{bmatrix} \begin{bmatrix}x_1\\x_2 \\x_3 \end{bmatrix}+ \begin{bmatrix}
0\\25 \\-120 \end{bmatrix} u \\ y= \begin{bmatrix}
1 & 0 & 0 \end{bmatrix} \begin{bmatrix}
x_1\\x_2 \\x_3 \end{bmatrix} \]
5 M
1 (d)
Write short note on pneumatic actuator.
5 M
2 (a)
Explain the architecture of 8051 microcontroller with neat sketch.
10 M
2 (b)
For a system, \[ G(s) h(s) = \dfrac {k}{s^2 (s+2)(s+3) }. \] Find the value of k to limit steady state error to 10 when input to system is \[ \left \{ 1+10t + \dfrac {40}{2} t^2 \right \} \]
10 M
3 (a)
Two double acting pneumatic cylinders A and B are selected for an industrial application. The sequence of movement for cylinder is as indicated below. A+B+, (AB)- Draw pneumatic circuit for the above sequence of operation.
10 M
3 (b)
Draw Bode plot for a unity feedback system with \[ G(S) H(S) = \dfrac {3 (s+1) (s+6) }{s^2 (s^2 = 18 s + 400)} \] Comment on G.M, P.M, and stability.
10 M
4 (a)
Describe the Architecture of PLC with block diagram with suitable industrial applications.
4 M
4 (b)
Sketch the complete root locus for the system having, \[ G(S) H(S) = \dfrac {K} {s(s+1) (s+2)(s+3)} \]
8 M
4 (c)
Consider the liquid-level system shown in the fig. 1. In the system Qt is steady-state flow rate, H1 and H2 are steady-state heads. h1 and h2 small deviation of head from its steady state value q and q2 are small deviations of inflow and outlflow rate from its steady values. Obtain the transfer function of the system.
8 M
5 (a)
Two double acting hydraulic cylinders A, B are selected for an industrial application. The sequence of movement for cylinder is as indicated below-
Delay B+A+, Delay(AB)-
Draw the electro-hydraulic circuit using 4/3 double solenoid ass final directional control valves. The auxiliary condition is that single cycle or multi-cycle can be selected.
Delay B+A+, Delay(AB)-
Draw the electro-hydraulic circuit using 4/3 double solenoid ass final directional control valves. The auxiliary condition is that single cycle or multi-cycle can be selected.
10 M
5 (b)
The open loop T.F. of unity feedbacks system is \[ G(S) = \dfrac {K}{S(1+TS)} \] for this system overshot reduces from 0.6 to 0.2 due to change in "K" only. Show that- \[ \dfrac {T K_1-1} {TK_2-1} = 43.33 \] where K1 and K2 are values of K for 0.6 and 0.2 overshot respectively.
10 M
6 (a)
For a system with characteristics equation, F(S)=s6+3S5+4S4+6S3+5S2+3S+2=0, examine stability using Routh's criterion.
6 M
6 (b)
Define (a) Gain Margin and (b) Phase Margin.
6 M
6 (c)
Differentiate between stepper motor and servo motor.
8 M
Write short notes on:
7 (a)
Advantages of PI controller
5 M
7 (b)
Transient response of a control system.
5 M
7 (c)
Polar plot.
5 M
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