1
GATE ECE 2015 Set 1
Numerical
+2
-0
In the system shown in figure (a), m(t) is a low-pass signal with bandwidth W Hz. The frequency response of the band-pass filter H(f) is shown in figure (b). If it is desired that the output signal z(t) = 10x(t), the maximum value of W (in Hz) should be strictly less than ____________________. GATE ECE 2015 Set 1 Communications - Analog Communication Systems Question 9 English
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2
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
3
GATE ECE 2015 Set 1
MCQ (Single Correct Answer)
+2
-0.6
The damping ratio of a series RLC circuit can be expressed as
A
$$\frac{R^2C}{2L}$$
B
$$\frac{2L}{R^2C}$$
C
$$\frac R2\sqrt{\frac CL}$$
D
$$\frac2R\sqrt{\frac LC}$$
4
GATE ECE 2015 Set 1
Numerical
+1
-0
A unity negative feedback system has the open-loop transfer function $$$G\left(s\right)\;=\;\frac K{s\left(s\;+\;1\right)\left(s\;+\;3\right)}$$$ The value of the gain K (>0) at which the root locus crosses the imaginary axis is _________.
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