Related Mcqs:

1. 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)

2. For a feed back control system to be stable, the _________________?

   A. Roots of the characteristic equation should be real
   B. Poles of the closed loop transfer function should lie in the left half of the complex plane
   C. Bode plots of the corresponding open loop transfer function should monotonically decrease
   D. Poles of the closed loop transfer function should lie in the right half of the complex plane

3. 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)

4. The closed loop pole of a stable second order system could be_______________?

   A. Both real and positive
   B. Complex conjugate with positive real parts
   C. Both real and negative
   D. One real positive and the other real negative

5. Which of the following is a desirable characteristic of an instrument ?

   A. High drift
   B. High fidelity
   C. High measuring lag
   D. Poor reproducibility

6. Which of the following controllers has the least maximum deviation ?

   A. P-controller
   B. P-I controller
   C. P-I-D controller
   D. P-D controller

7. An ideal PID controller has the transfer function [1 + (1/0.55) + 0.25]. The frequency at which the magnitude ratio of the controller is 1, is________________?

   A. 0.5/0.2
   B. 0.2/0.5
   C. 0.2 × 0.5
   D. 1/√(0.2 × 0.5)

8. Liquid flow rate in a small channel is best measured by a/an____________________?

   A. Weir
   B. Pitot tube
   C. Vane meter
   D. Venturimeter

9. Silver point temperature is ______________ °C?

   A. 760.5
   B. 860.5
   C. 960.5
   D. 1060.5

10. The time taken for a radioactive element to reduce to 50% of its original weight is _____________ years, if its half life period is 12 years?

    A. 24
    B. 18
    C. 6
    D. 36