What is the overall transfer function (C/R) of the following block diagram if G = G1. G2. G3 and H = H1.H2 ?

Related Mcqs:

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

2. 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

3. The open loop transfer function of a process is K [{(s + 1) (s + 4)}/{(s + 2) (s + 3)}]. In the root locus diagram, the poles will be at ___________________?

   A. -1, -4
   B. 1, 4
   C. -2, -3
   D. 2, 3

4. 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

5. 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)

6. Bode diagram are generated from output response of the system subjected to which of the following input ?

   A. Impulse
   B. Step
   C. Ramp
   D. Sinusoidal

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. Characteristic equation is the denominator of ____________ loop transfer function?

   A. Open
   B. Closed
   C. Both A. and B.
   D. Neither A. nor B.

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 root locus method, a pole of a transfer function G(s) is the value of s for which G(s) approaches ___________________?

    A. -1
    B. 0
    C. 1
    D. ∞