1
GATE ECE 2001
MCQ (Single Correct Answer)
+2
-0.6
An electrical system and its signal-flow graph representations are shown in Figure (a) and (b) respectively. The values of G2 and H, respectively are GATE ECE 2001 Control Systems - Signal Flow Graph and Block Diagram Question 5 English
A
$$\frac{Z_3\left(s\right)}{Z_2\left(s\right)+Z_3\left(s\right)+Z_4\left(s\right)},\frac{-Z_3\left(s\right)}{Z_1\left(s\right)+Z_3\left(s\right)}$$
B
$$\frac{-Z_3\left(s\right)}{Z_2\left(s\right)-Z_3\left(s\right)+Z_4\left(s\right)},\frac{-Z_3\left(s\right)}{Z_1\left(s\right)+Z_3\left(s\right)}$$
C
$$\frac{Z_3\left(s\right)}{Z_2\left(s\right)+Z_3\left(s\right)+Z_4\left(s\right)},\frac{Z_3\left(s\right)}{Z_1\left(s\right)+Z_3\left(s\right)}$$
D
$$\frac{-Z_3\left(s\right)}{Z_2\left(s\right)-Z_3\left(s\right)+Z_4\left(s\right)},\frac{Z_3\left(s\right)}{Z_1\left(s\right)+Z_3\left(s\right)}$$
2
GATE ECE 2001
MCQ (Single Correct Answer)
+2
-0.6
The feedback control system in Figure is stable GATE ECE 2001 Control Systems - Stability Question 14 English
A
for all K $$\geq$$ 0
B
only if K $$\geq$$ 1
C
only if 0 $$\leq$$ K < 1
D
only if 0 $$\leq$$ K $$\leq$$ 1
3
GATE ECE 2001
Subjective
+5
-0
Consider the feedback control system shown in figure. GATE ECE 2001 Control Systems - Stability Question 4 English
(a) Find the transfer function of the system and its characteristic equation.

(b) Use the Routh-Hurwitz criterion to determine the range of 'K' for which the system is stable.

4
GATE ECE 2001
MCQ (Single Correct Answer)
+1
-0.3
The root-locus diagram for a closed loop feedback system is shown in Figure. The system is overdamped. GATE ECE 2001 Control Systems - Root Locus Diagram Question 7 English
A
$$only\;if\;0\;\leq\;K\;\leq\;1$$
B
$$only\;if\;1\;<\;K\;<\;5$$
C
$$only\;if\;\;K\;>\;5$$
D
$$if\;0\;\leq\;K\;<\;1\;or\;K\;>\;5$$
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