πŸ“Š Control Systems
Q. The band width, in a feedback amplifier.
  • (A) remains unaffected
  • (B) decreases by the same amount as the gain increase
  • (C) increases by the sane saaaajajt as the gain decrease
  • (D) decreases by the same amount as the gain decrease
πŸ’¬ Discuss
βœ… Correct Answer: (C) increases by the sane saaaajajt as the gain decrease
πŸ“Š Control Systems
Q. On which of the following factors does the sensitivity of a closed loop system to gain changes and load disturbances depend ?
  • (A) Frequency
  • (B) Loop gain
  • (C) Forward gain
  • (D) All of the above
πŸ’¬ Discuss
βœ… Correct Answer: (D) All of the above
πŸ“Š Control Systems
Q. The transient response, with feedback system,
  • (A) rises slowly
  • (B) rises quickly
  • (C) decays slowly
  • (D) decays quickly
πŸ’¬ Discuss
βœ… Correct Answer: (D) decays quickly
πŸ“Š Control Systems
Q. The second derivative input signals modify which of the following ?
  • (A) The time constant of the system
  • (B) Damping of the system
  • (C) The gain of the system
  • (D) The time constant and suppress the oscillations
πŸ’¬ Discuss
βœ… Correct Answer: (D) The time constant and suppress the oscillations
πŸ“Š Control Systems
Q. Which of the following statements is correct for any closed loop system ?
  • (A) All the co-efficients can have zero value
  • (B) All the co-efficients are always non-zero
  • (C) Only one of the static error co-efficients has a finite non-zero value
  • (D) None of the above
πŸ’¬ Discuss
βœ… Correct Answer: (C) Only one of the static error co-efficients has a finite non-zero value
πŸ“Š Control Systems
Q. Which of the following statements is correct for a system with gain margin close to unity or a phase margin close to zero ?
  • (A) The system is relatively stable
  • (B) The system is highly stable
  • (C) The system is highly oscillatory
  • (D) None of the above
πŸ’¬ Discuss
βœ… Correct Answer: (C) The system is highly oscillatory
πŸ“Š Control Systems
Q. 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
πŸ’¬ Discuss
βœ… Correct Answer: (C) Noise is proportional to band width
πŸ“Š Control Systems
Q. In a stable control system backlash can cause which of the following ?
  • (A) Underdamping
  • (B) Overdamping
  • (C) Poor stability at reduced values of open loop gain
  • (D) Low-level oscillations
πŸ’¬ Discuss
βœ… Correct Answer: (D) Low-level oscillations
πŸ“Š Control Systems
Q. In an automatic control system which of the following elements is not used ?
  • (A) Error detector
  • (B) Final control element
  • (C) Sensor
  • (D) Oscillator
πŸ’¬ Discuss
βœ… Correct Answer: (D) Oscillator
πŸ“Š Control Systems
Q. The capacitance, in force-current analogy, is analogous to
  • (A) momentum
  • (B) velocity
  • (C) displacement
  • (D) mass
πŸ’¬ Discuss
βœ… Correct Answer: (D) mass

Jump to