Control Systems - Study Mode

[#121] The block diagram of a feedback system is shown in the figure. The transfer function $$frac{{Yleft( s
ight)}}{{Xleft( s
ight)}}$$ xa0of the system is
Correct Answer

(C) $$frac{{{G_1} + {G_2}}}{{1 + {G_1}H}}$$

[#122] In a type 2 system, if a pole has been added, it will cause:
Correct Answer

(A) lag compensation

[#123] A family of constant N circles has the centre as:
Correct Answer

(D) $$X = - frac{1}{2}{ ext{ and }}Y = frac{1}{{2N}}$$

[#124] In the signal flow graph of figure, $$frac{{ ext{y}}}{{ ext{x}}}$$ equals
Correct Answer

(C) 2

[#125] A negative-feedback closed-loop system is supplied with an input of 5 V, the system has a forward gain of 1 and a feedback gain of 1. What is the output voltage?
Correct Answer

(D) 2.5 V