GATE ECE

Signal Flow Graph and Block Diagram

Control Systems

(Past Years Questions)

Marks 1

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The block diagram of a feedback control system is shown in the figure. The overall closed-loop gain G of the system is ...
GATE ECE 2016 Set 3
By performing cascading and/or summing/differencing operations using transfer function blocks G1(s) and G2(s), one CANNO...
GATE ECE 2015 Set 2
For the signal flow graph shown in the figure, the value of $$\frac{\mathrm C\left(\mathrm s\right)}{\mathrm R\left(\mat...
GATE ECE 2015 Set 2
Consider the following block diagram in the figure. The transfer function $$\frac{\mathrm C\left(\mathrm s\right)}{\ma...
GATE ECE 2014 Set 3
For the following system, When X1(s) = 0 , the transfer function $$\frac{\mathrm Y\left(\mathrm s\right)}{{\mathrm X}_2...
GATE ECE 2014 Set 2
The transfer function Y(s)/R(s) of the system shown is ...
GATE ECE 2010
The equivalent of the block diagram in Figure is given as ...
GATE ECE 2001
Signal flow graph is used to find
GATE ECE 1995

Marks 2

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The signal flow graph for a system is given below. The transfer function $$\frac{Y(s)}{U(s)}$$ for this system is ...
GATE ECE 2013
Consider the signal flow graph shown in Figure. The gain $$\frac{x_5}{x_1}$$ is ...
GATE ECE 2004
The signal flow graph of a system is shown in figure. The transfer function $$\frac{C(s)}{R(s)}$$ of the system is ...
GATE ECE 2003
An electrical system and its signal-flow graph representations are shown in Figure (a) and (b) respectively. The values ...
GATE ECE 2001
In the signal flow graph of Fig. y/x equals ...
GATE ECE 1997
In the signal flow graph of Figure, the gain c/r will be ...
GATE ECE 1991
In the signal flow graph shown in fig X2= TX1 where T is equal to ...
GATE ECE 1987
For the system shown in figure the transfer function $$\frac{\mathrm C\left(\mathrm s\right)}{\mathrm R\left(\mathrm s\r...
GATE ECE 1987

Marks 5

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A feedback control system is shown in figure (a) Draw the signal-flow graph that represents the system. (b) Find the to...
GATE ECE 2001
Draw a signal flow graph for the following set of algebraic equations: $$$\begin{array}{l}y_2=ay_1-\;gy_3\\y_3=ey_2+\;cy...
GATE ECE 1998
Reduce the signal flow graph shown in fig. below, to obtain another graph which does not contain the node e5.Also, remov...
GATE ECE 1994

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