Control Systems - Study Mode
[#161] The transfer function of a phase lead network, as shown in the figure below is $$frac{{Kleft( {1 + 0.3s}
ight)}}{{left( {1 + 0.17s}
ight)}}$$ The values of R 1 and R 2 are respectively
Correct Answer
(B) 300 kΩ and 400 kΩ
[#162] A typical control system is shown in the figure. Assuming $$Rleft( s
ight) = frac{1}{s}$$ xa0the steady-state error is given by,
Correct Answer
(C) Zero
[#163] Find the points at which the root locus crosses the jω axis for the unity feedback system with feed forward transfer function. $$Gleft( s
ight) = frac{K}{{left( {{s^2} + 2s + 2}
ight)left( {{s^2} + 2s + 5}
ight)}}$$
Correct Answer
(B) ±1.8708
[#164] The characteristic equation of a certain feedback control system is given by s 4 + 4s 3 + 13s 2 + 36s + k = 0. The range of values of k for which the feedback system is stable, is given by:
Correct Answer
(C) 0 < k < 36
[#165] The open loop transfer function $$Gleft( s
ight) = frac{{kleft( {s + 10}
ight)}}{{left( {s + 2}
ight)left( {s + 5}
ight)}},$$ xa0 xa0 the break point lies in the root locus in between . . . . . . . .
Correct Answer
(C) -2 to -5