Control Systems - Study Mode
[#216] Which control action can never be used alone?
Correct Answer
(B) Derivative
[#217] Nyquist stability criterion uses open loop frequency response characteristics.
Correct Answer
(A) True
[#218] Find the locations of any two roots of the characteristic equation F(s) = s 4 + 2s 3 + 11s 2 + 18s + 18 = 0.
Correct Answer
(B) ±j3
[#219] The unit step response of the above system is given by
Correct Answer
(A) $$Cleft( s
ight) = frac{1}{{sleft( {1 + sT}
ight)}}$$
[#220] If the closed-loop transfer function of a control system is given as $$Tleft( s
ight) = frac{{s - 5}}{{left( {s + 2}
ight)left( {s + 3}
ight)}},$$ xa0 xa0 then it is
Correct Answer
(D) a non-minimum phase system