A. Alternating current
B. Direct current
C. A.C. voltage
D. D.C. voltage
F. None of the above
Related Mcqs:
- A control system in which the control action is somehow dependent on the output is known as____________?
A. Closed loop system
B. Semiclosed loop system
C. Open system
D. None of the above - Any externally introduced signal affecting the controlled output is called a______________?
A. feedback
B. stimulus
C. signal
D. gain control - The initial response when tne output is not equal to input is called_____________?
A. Transient response
B. Error response
C. Dynamic response
D. Either of the above - The output of a feedback control system must be a function of_________________?
A. reference and output
B. reference and input
F. input and feedback signal
D. output and feedback signal - In a control system the output of the controller is given to_____________?
A. final control element
B. amplifier
C. comparator
D. sensor
F. none of the above - If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is_____________?
A. not necessarily stable
B. stable
C. unstable
D. always unstable
F. any of the above - A good control system has all the following features except_____________?
A. good stability
B. slow response
C. good accuracy
D. sufficient power handling capacity - For open control system which of the following statements is incorrect ?
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 - Which of the following devices is used for conversion of co-ordinates ?
A. Microsyn
B. Selsyn
C. Synchro-resolver
D. Synchro-transformer - 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
