This set of Flexible Manufacturing System Multiple Choice Questions & Answers (MCQs) focuses on “Control System”.
1. Which of the following executes the program of instructions in an automated system?
a) Handling Equipment
b) Storage Equipment
c) Control Element
d) Safety Equipment
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Explanation: In an automated system, Control Element executes the program of instructions. It enables the process to accomplish its defined functions which is to perform manufacturing of products.
2. Which control system compares the output variable with an input parameter?
a) Angular Loop System
b) Closed Loop System
c) Modular System
d) Open Loop System
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Explanation: The type of control system which compares the output variable with an input parameter is known as closed loop control system. If there arises any difference between the two, it will be used to drive the system in agreement with the input.
3. How is closed loop system otherwise termed as?
a) Open Loop System
b) Retrieval Loop System
c) Feedback Control System
d) Retracted Loop System
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Explanation: Feedback Control System is the other term given to closed loop control system. It optimizes the performance of the existing system by using feedback from the present system.
4. Which of the following perform feedback function in a closed loop system?
a) Amplifier
b) Sensor
c) Resistor
d) Guided Wire
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Explanation: In a closed loop system, the component which is used to perform feedback function is sensor. It is used to measure the output variable and close the loop between input and output.
5. Which of the following compares the output with the input and makes slight adjustments if required?
a) Oxidizer
b) Amplifier
c) Reducer
d) Controller
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Explanation: In an automated system, the component which compares the output with the input and makes slight adjustments in the process in order to reduce the difference between the input and output is controller.
6. Closed loop system is less expensive than the open loop system.
a) False
b) True
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Explanation: Open loop system is less expensive than the closed loop system. These systems are preferable when there are simple tasks needed to be performed by the system.
7. Which are hardware devices that physically carry out the control actions?
a) Fluctuators
b) Terminators
c) Actuators
d) Radiators
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Explanation: In an automated system, the hardware component which physically carries out the control actions is known as actuators. Electric Motors and flow valves are some of the examples of actuators used in an automated system.
8. Which control system operates without the feedback loop?
a) Angular Loop
b) Open Control Loop
c) Modular Loop
d) Closed Control Loop
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Explanation: In an automated system, the control system which operates without the feedback loop is known as Open Control Loop system. In this system, there will be no comparison made between the input and output variable.
9. Which of the following systems are common to locate a work part relative to the tool or work head?
a) Slider System
b) Positioning System
c) Parabolic System
d) Polar System
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Explanation: In manufacturing industries, a common system known as Positioning System will be used to locate a work part relative to the tool or work head. While positioning, accuracy is very strictly observed.
10. Which of the following positioning system does the positioning system use in order to position the system?
a) Cartesian Coordinate System
b) Cylindrical Coordinate System
c) Polar Coordinate System
d) Newtonian Coordinate System
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Explanation: The coordinate system which is used to position the system in an automated system is known as Cartesian coordinate system. In this system, a plane is fixed and distances will be position using algebraic signs.
11. Which motor is designed to rotate a precise fraction of a turn for each pulse received from the controller?
a) Modular Motor
b) AC Motor
c) DC Motor
d) Stepper Motor
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Explanation: The Motor which is designed to rotate a precise fraction of a turn for each pulse received from the controller is known as stepper motor. It is used in applications where precise movement is to be obtained.
12. Which motor is used in closed loop control system?
a) AC Stepper Motor
b) DC Stepper motor
c) AC Servomotor
d) DC Servomotor
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Explanation: In an automated closed loop control system, DC Servomotor will be used. In general, servomotors will be preferred in closed loop control system since it can be operated with respect to the feedback from the system.
13. In a positioning system, the rotation of the lead screw will be converted into hyperbolic motion.
a) False
b) True
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Explanation: In a positioning system, the rotation of the lead screw will be converted into linear motion. The linear motion will be used to position the table to the desired work position.
14. Which of the following positioning system works with high reliability?
a) Mixed Polar Positioning System
b) Closed Loop Positioning System
c) Modular Positioning System
d) Open Loop Positioning System
View Answer
Explanation: The Positioning system which works with high reliability is known as Open Loop Positioning System. Reliability refers to the same process being repeated throughout its life cycle.
Sanfoundry Global Education & Learning Series – Flexible Manufacturing System.
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