Control Systems - Study Mode
[#86] Consider the following statements for signal flow graph: 1. It represents linear as well as non-linear systems. 2. It is not unique for a given system. Which of the above statements is/are correct?
Correct Answer
(B) 2 only
[#87] The gain-phase plots of open-loop transfer function of four different systems are shown below. The correct sequence of the increasing order of stability of these four systems will be:
Correct Answer
(B) A, B, C, D
[#88] Group I gives two possible choices for the impedance Z in the diagram. The circuit elements in Z satisfy the condition R 2 C 2 > R 1 C 1 . The transfer function $$frac{{{V_0}}}{{{V_i}}}$$ represents a kind of controller. Match the impedances in Group I with the types of controllers in Group II.
Correct Answer
(B) Q-1, R-3
[#89] A composite R-C network yielded the following transfer function when calculated from its components: $$Tleft( s
ight) = frac{{Cleft( s
ight)}}{{Rleft( s
ight)}} = frac{{1 + 21s + 20{s^2}}}{{1 + 11s + 10{s^2}}}$$ This network can be used as which one of the following?
Correct Answer
(A) Phase lead compensator
[#90] In a synchro error detection, the output voltage is proportional to [ω(t)] n , where ω(t) is the rotor velocity and n equals to
Correct Answer
(C) 1