MCQ for Electrical Control System - Set 05 - ObjectiveBooks

MCQ for Electrical Control System - Set 05

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

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