Control Systems Engineering, Second Edition

APPENDIX 4

Objective Type Questions

A4.1 INTRODUCTION

Q.1 State whether the following statements are True or False.

1. Feedback control systems are also referred to as closed-loop control systems
2. A washing machine where the washing is done on a time basis through a timer is an example of closed-loop control system
3. In an open-loop the control operation is independent of the output
4. In an error detector the feedback signal is added with the reference signal to obtain error signal
5. A refrigerator is an example of closed-loop control system
6. Performance of an open-loop system depends on the settings of the system components
7. Fixed-time traffic light control system is an example of closed-loop control system
8. In a linear system the response produced by simultaneous ...