# Mathematical Preliminaries MCQ’s

This set of Control Systems Multiple Choice Questions & Answers (MCQs) focuses on “Mathematical Preliminaries”.

1. The effect of error damping is to
a) Provide larger settling lime
b) Delay the response
d) All of the mentioned

2. ______________technique gives quick transient and stability response
a) Root locus
b) Bode
c) Nyquist
d) Nichols

3. Which of the following devices is used for conversion of co-ordinates?
a) Microsyn
b) Selsyn
c) Synchro-resolver
d) Synchro-transformer

4. A phase lag lead network introduces in the output
a) Lag at all frequencies
b) Lag at high frequencies and lead at low frequencies
c) Lag at low frequencies and lead at high frequencies
d) None of the above mentioned

5. ____________can be extended to systems which are time-varying?
a) Bode-Nyquist stability methods
b) Transfer functions
c) Root locus design
d) State model representatives

6. Which of the following is an electromechanical device?
a) Induction relay
b) Thermocouple
c) LVDT
d) All of the mentioned

7. Which of the following is the non-linearity caused by servomotor?
a) Static friction
b) Backlash
c) Saturation
d) None of the mentioned

8. Laplace transform is used for the systems with:
a) Initial conditions infinite
b) Initial conditions zero
c) Initial conditions finite
d) Initial conditions equal to the initial input

9. A differentiator is usually not a part of a control system because it
a) Reduces damping
b) Reduces the gain margin
c) Increases input noise
d) Increases error

10. If the gain of the critical damped system is increased it will behave as
a) Oscillatory
b) Critically damped
c) Overdamped
d) Underdamped