# Time Domain Analysis – 1 – 9

41. A system is critically damped. If the gain of the system is increased, the system will behave as :

(a) undamped
(b) underdamped
(c) overdamped
(d) no effect of gain

Explanation
No answer description available for this question. Let us discuss.

42. The effect of increase in the forward path gain of a control system on the damping ratio is that the damping ratio is :

(a) increased
(b) reduced
(c) not effected

Explanation
No answer description available for this question. Let us discuss.

43. For a second – order systems as ξ is increased from zero, the response becomes :

(a) Progressively more oscillatory
(b) Progressively less oscillatory
(c) zero
(d) infinity

Explanation
No answer description available for this question. Let us discuss.

44. The roots of the characteristic equation are the same as the poles of the :

(a) closed-loop transfer function
(b) open –loop transfer function
(c) forward path transfer function
(d) none of these

Explanation
No answer description available for this question. Let us discuss.

45. The rise time of a second – order underdamped system is the time taken by the output to rise :

(a) from 10% to 90% of its final steady – state value
(b) from 0%to 100% to 100% of its final steady – state value
(c) from 5% ato 95% of its final steady – state value
(d) from 0% to 50% its final steady – state value