1
GATE ECE 2015 Set 1
MCQ (Single Correct Answer)
+1
-0.3
Negative feedback in a closed-loop control system DOES NOT
A
reduce the overall gain
B
reduce bandwidth
C
improve disturbance rejection
D
reduce sensitivity to parameter variation
2
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
Despite the presence of negative feedback, control systems still have problems of instability because the
A
Components used have nonlinearities.
B
Dynamic equations of the subsystems are not known exactly.
C
Mathematical analysis involves approximations.
D
System has large negative phase angle at high frequencies.
3
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The transfer function of a tachometer is of the form
A
Ks
B
$$\frac{\mathrm K}{\mathrm s}$$
C
$$\frac{\mathrm K}{\left(\mathrm s+1\right)}$$
D
$$\frac{\mathrm K}{\mathrm s\left(\mathrm s+1\right)}$$
4
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
The transfer function of a linear system is the
A
Ratio of the output, V0(t) and input Vi(t)
B
Ratio of the derivatives of the output and the input
C
Ratio of the Laplace transform of the output and that of the input with all initial conditions zeros
D
none of these
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