A. Less expensive
B. Recalibration is not required for maintaining the required quality of the output
C. Construction is simple and maintenance easy
D. Errors are caused by disturbances
Related Mcqs:
- Which of the following statements is not necessarily correct for open control system ?
A. Input command is the sole factor responsible for providing the control action
B. Presence of non-linearities causes malfunctioning
C. Less expensive
D. Generally free from problems of non-linearities - Which of the following is an open loop control system ?
A. Field controlled D.C. motor
B. Ward leonard control
C. Metadyne
D. Stroboscope - A closed loop system is distinguished from open loop system by which of the following ?
A. Servomechanism
B. Feedback
C. Output pattern
D. Input pattern - In an open loop control system____________?
A. Output is independent of control input
B. Output is dependent on control input
C. Only system parameters have effect on the control output
D. None of the above - In open loop system_____________?
A. the control action depends on the size of the system
B. the control action depends on system variables
C. the control action depends on the input signal
D. the control action is independent of the output - _______________is an open loop control system?
A. Ward Leonard control
B. Field controlled D.C. motor
C. Stroboscope
D. Metadyne - 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 - 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 - 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 - ______________By which of the following the system response can be tested better ?
A. Ramp input signal
B. Sinusoidal input signal
C. Unit impulse input signal
D. Exponentially decaying signal
