A. 1/(S2 + 2)
B. 1/(S2 – 2S + 3)
C. 1/(S2 + 2S + 2)
D. exp (-20 S)/(S2 + 2S – 1)
Related Mcqs:
- Which of the systems having following transfer functions is stable ?
A. 1/(s2 + 2)
B. 1/(s2 – 2s + 3)
C. 1/(s2 + 2s + 2)
D. exp (-20s)/(s2 + 2s – 1) - For two non-interacting first order systems connected in series, the overall transfer function is the ______________ of the individual transfer functions?
A. Product
B. Ratio
C. Sum
D. Difference - In a closed loop system, the process to be controlled is an integrating process with transfer function 1/2s. The controller proposed to be used in an integral controller with transfer function 1/T1s. When a step change in set point is applied to such a closed loop system, the controlled variable will exhibit__________________?
A. Overdamped response
B. Underdamped response
C. Undamped response
D. Unstable response - Find the ultimate gain and frequency for a proportional controller in the case of a process having the transfer function Gp(s) = 1/(4s + 1)(2s + 1)(s + 1) ?
A. w = 1/√14, Kc = 45/7 √14
B. w = √(7/6), Kc = 46/3
C. w = 1, Kc = 13
D. w = √(7/8), Kc = 45/4 - The root locus plot of the roots of the characteristics equation of a closed loop system having the open loop transfer function K (s + 1)/[2 (2s + 1) (3s + 1)] will have a definite number of loci for variation of K from 0 to ∞. The number of loci is_______________?
A. 1
B. 2
C. 3
D. 4 - What is the overall transfer function (C/R) of the following block diagram if G = G1. G2. G3 and H = H1.H2 ?
A. 1/(1 + GH)
B. G/(1 + GH)
C. H/(1 + GH)
D. G/(1 – GH) - Suppose that the gain, time constant and dead time of a process with the following transfer function: Gc(s) = 10 exp( – 0.1s)/(0.5s + 1) are known with a possible error of ± 20% of their values. The largest permissible gain Kc of a proportional controller needs to be calculated below taking the values of process gain, time constant and dead time as________________?
A. 8, 0.6, 0.08
B. 12, 0.6, 0.12
C. 8, 0.6, 0.12
D. 12, 0.4, 0.08 - The initial value (t = 0) of the unit step response of the transfer function [(s + 1)/(2s + 1)] is__________________?
A. 0
B. ½
C. 1
D. 2 - The unit step response of the transfer function (2s – 1)/[(3s + 1) (4s + 1)] reaches its final steady state asymptotically after _____________?
A. A monotonic increase
B. A monotonic decrease
C. Initially increasing and then decreasing
D. Increasing decreasing and then increasing - The transfer function for a PID controller is (where, η i is the integral (reset) time and ηD is the derivative time.) ?
A. Kc(1 + ηis + ηD ). s
B. Kc[1 + (1/ηis) + ηD . s)
C. Kc(1 + ηis + (1/ηD . s)
D. None of these
