This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Optimal Control Problems-2″.

1. For minimizing the transfer function the condition is :

a) Second differentiation of the function must be zero

b) Second differentiation of the function must be positive

c) Second differentiation of the function must be negative

d) Second differentiation of the function must be complex

2. For the stability in optimal control poles of the transfer function must be :

a) Located on the right half of s plane

b) Left half of s plane

c) On the s plane

d) None of the mentioned

3. The main step for solving the optimal control problem:

a) Transfer function of system which is optimal with respect to the given performance criterion

b) Compensators for the system

c) Minimizing the quadratic function

d) All of the mentioned

4. The method of choosing compensator is the configuration must be:

a) Forward path

b) Cascade and feedback compensation

c) Feed forward configuration

d) All of the mentioned

5. Z-transform is used in:

a) Continuous optimal control problem

b) Discrete optimal problem

c) Control systems

d) None of the mentioned

6. The special case of the tracking problem with input equal to zero:

a) Free response

b) Regulator problem

c) Forced response

d) Output regulator problem

7. When some of the states are inaccessible, then we may set the feedback coefficients equal to zero.

a) True

b) False

8. For the stable system in discrete optimal control systems:

a) Poles must lie outside the unit circle

b) Poles must lie within the unit circle

c) Poles must be on the unit circle

d) Pole must be in infinity

9. The primary objective of the output regulator problem is to damp out:

a) Initial conditions quickly

b) Reducing the effect of excessive oscillations

c) Reducing the effect of excessive overshoot

d) All of the mentioned

10. The limitation of the transfer function approach are:

a) The spectral factorization becomes quite complex

b) It is restricted to the systems with all performance index

c) Multi input and multi output systems are not obvious

d) It is useful for time varying and linear systems