26. The area under a unit – impulse function is :
(a) infinity
(b) zero
(c) unity
(d) none of these
27. For underdamped systems, the damping ratio is :
(a) ξ=0
(b) ξ
(c) ξ
(d) ξ=1
28. If the characteristic equation of a system is s^2 +2=0,the system is :
(a) undamped
(b) underdamped
(c) critically –damped
(d) overdamped
29. In general, which of the following systems is preferred.
(a) overdamped
(b) critically – damped
(c) undamped
(d) underdamped
30. The steady – state response of a system is dependent :
(a) Only on system poles
(b) only on the system poles and the inputs applied
(c) both on the system poles and the inputs applied
(d) none of these
Related Posts
Time Domain Analysis » Exercise - 140. For critically – damped system, the damping ratio is : (a) ξ=0 (b) ξ=∞ (c) ξ (d) ξ=1- Frequency Domain Analysis » Exercise - 1 20. For a second – order system, ωn = 8 and ξ= 0.5. The value of ωr in rad/s is : (a) 4.657 (b) 5.657 (c) 6.657 (d) none of these
- Stability Theory » Exercise - 253. The phase margin of a system is 40˚. The damping ratio of the system ξ is approximately : (a) 0.04 (b) 0.4 (c) 4 (d) cannot be estimated
- Frequency Domain Analysis » Exercise - 115. The damping ratio ξ of a system is 0.5. The value of Mr is : (a) 2.308 (b) 1.54 (c) 1.01 (d) none of these
- 5555555555140. The two digits in the binary number system are ___ and ___. (a) 1, 2 (b) H, L (c) T, F (d) 0, 1