1
GATE EE 2015 Set 1
+1
-0.3
For the signal-flow graph shown in the figure, which one of the following expressions is equal to the transfer function $${\left. {{{Y\left( s \right)} \over {{X_2}\left( s \right)}}} \right|_{{x_1}\left( s \right) = 0}}?$$ A
$${{{G_1}} \over {1 + {G_2}\left( {1 + {G_1}} \right)}}$$
B
$${{{G_2}} \over {1 + {G_1}\left( {1 + {G_2}} \right)}}$$
C
$${{{G_1}} \over {1 + {G_1}{G_2}}}$$
D
$${{{G_2}} \over {1 + {G_1}{G_2}}}$$
2
GATE EE 2014 Set 3
+1
-0.3
The signal flow graph of a system is shown below. $$U(S)$$ is the input and $$C(S)$$ is the output. Assuming $${h_1} = {b_1}$$ and $${h_0} = {b_0} - {b_1}{a_1},$$ the input-output transfer function, $$G\left( S \right) = {{C\left( S \right)} \over {U\left( S \right)}}$$ of the system is given by

A
$$G\left( S \right) = {{{b_0}s + {b_1}} \over {{s^2} + {a_0}s + {a_1}}}$$
B
$$G\left( S \right) = {{{a_1}s + {a_0}} \over {{s^2} + {b_1} + {b_0}}}$$
C
$$G\left( S \right) = {{{b_1}s + {b_0}} \over {{s^2} + {a_1}s + {a_0}}}$$
D
$$G\left( S \right) = {{{a_0}s + {a_1}} \over {{s^2} + {b_0}s + {b_1}}}$$
3
GATE EE 1993
+1
-0.3
Signal flow graph is used to obtain the
A
stability of a system
B
transfer function of a system
C
controllability of a system
D
observability of a system
4
GATE EE 1992
+1
-0.3
The overall transfer function of the system in Figure, is A
$${G \over {1 - GH}}$$
B
$${{2G} \over {1 - GH}}$$
C
$${{GH} \over {1 - GH}}$$
D
$${{GH} \over {1 - H}}$$
GATE EE Subjects
Electric Circuits
Electromagnetic Fields
Signals and Systems
Electrical Machines
Engineering Mathematics
General Aptitude
Power System Analysis
Electrical and Electronics Measurement
Analog Electronics
Control Systems
Power Electronics
Digital Electronics
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