Practice Test: Question Set - 05
1. Phase margin of a system is used to specify which of the following?
- (A) Frequency response
- (B) Absolute stability
- (C) Relative stability
- (D) Time response
2. The type 0 system has _______ at the origin.
- (A) No pole
- (B) Net pole
- (C) Simple pole
- (D) Two poles
3. ________ is not a final control element.
- (A) Control valve
- (B) Potentiometer
- (C) Electro-pneumatic converter
- (D) Servomotor
4. Which of the following is an electromagnetically device?
- (A) Induction relay
- (B) Thermocouple
- (C) LVDT
- (D) Any of the above
5. The transfer function technique is considered as inadequate under which of the following conditions?
- (A) Systems having complexities and
nonlinearities
- (B) Systems having stability problems
- (C) Systems having multiple input disturbances
- (D) All of the above
6. In closed loop control system, with positive value of feedback gain the overall gain of the system will
- (A) Decrease
- (B) Increase
- (C) Be unaffected
- (D) Any of the above
7. An automatic toaster is a ________ loop control system.
- (A) Open
- (B) Closed
- (C) Partially closed
- (D) Any of the above
8. Which of the following should be done to make an unstable system stable?
- (A) The gain of the system should be decreased
- (B) The gain of the system should be increased
- (C) The number of poles to the loop transfer function
should be increased
- (D) The number of zeros to the loop transfer function
should be increased
9. The output of a feedback control system must be a function of
- (A) Reference and output
- (B) Reference and input
- (C) Input and feedback signal
- (D) Output and feedback signal
10. Due to which of the following reasons excessive bond width in control systems should be avoided?
- (A) It leads to slow speed of response
- (B) It leads to low relative stability
- (C) Noise is proportional to band width
- (D) None of the above