The transfer function of a first order system is______________?

Related Mcqs:

1. 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

2. 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

3. A system with transfer function [(2S/4S) + 1] is of _____________ order?

   A. Zero
   B. 1st
   C. 2nd
   D. 3rd

4. The transfer function of a second order system is _____________________?

   A. 1/(T2s2 + 2ξTs + 1)
   B. 1/(T2s2 + 2Ts + 1)
   C. 1/(T2s2 + 2ξT + 1)
   D. None of these

5. The second order system with the transfer function 4/(s2 + 2s + 4) has a damping ratio of ___________________?

   A. 2.0
   B. 0.5
   C. 1.0
   D. 4.0

6. 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)

7. 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

8. Which of the systems having the following transfer function is stable ?

   A. 1/(S2 + 2)
   B. 1/(S2 – 2S + 3)
   C. 1/(S2 + 2S + 2)
   D. exp (-20 S)/(S2 + 2S – 1)

9. 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

10. 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