# Flexible Manufacturing System Questions and Answers – Variables and Parameters in an Industrial System

This set of Flexible Manufacturing System Multiple Choice Questions & Answers (MCQs) focuses on “Variables and Parameters in an Industrial System”.

1. Which is defined as the automatic regulation of unit operations and their associated equipments?
a) Domestic Control
b) Forensic Control
c) Industrial Control
d) Robust Control

Explanation: In general, the automatic regulation of unit operations and their associated equipments is known as industrial control. It involves coordination and integration of unit operations in the larger production systems.

2. Which variable is uninterrupted during the manufacturing operation?
a) Modular Variable
b) Continuous Variable
c) Fixed Variable
d) Mixed Variable

Explanation: The variable which will be uninterrupted during the manufacturing operation is known as continuous variable. It is not restricted to any specific value during the process.

3. Which type does continuous variable belong to?
a) Binary
b) Hybrid
c) Polar
d) Analog

Explanation: Continuous variable belongs to analog type. It means it can have any value within a range during the process. These variables are continuous over time during the process.

4. Which variable takes only a specified value within a given range during the process?
a) Modular Variable
b) Continuous Variable
c) Discrete Variable
d) Mixed Variable

Explanation: The variable which will take only a specified value within a given range during the process is known as discrete variable. Limit switches on or off, motor on or off are the typical examples of the continuous variable.

5. Most of the discrete variables are analog type.
a) False
b) True

Explanation: Most of the discrete variables are binary type. It means it can take two possible values either ON or OFF, open or close. The discrete variables cannot be of analog type where it can take a range of values within a certain limit.

6. Which of the following consists of a series of pulses?
a) Clutch Train
b) Modular Train
c) Pulse Train
d) Gear Train

Explanation: Pulse Train consists of a series of pulses. It is a form of discrete variable. It can be used to indicate the piece counts. Clutch Train, Modular Train and Gear Train do not consist of a series of pulses.

7. Which control system consists of variables and parameters that are continuous and analog?
a) Dynamic Control
b) Discrete Control
c) Continuous Control
d) Flexible Control

Explanation: The Control system which consists of the variables and parameters that are continuous and analog is known as Continuous Control system. These systems are primarily seen in process industries.

8. Which control system consists of variables and parameters that are discrete and mostly binary?
a) Dynamic Control
b) Discrete Control
c) Continuous Control
d) Flexible Control

Explanation: The Control system which consists of the variables and parameters that are discrete and mostly binary is known as Continuous Control system. These systems are primarily seen in discrete manufacturing industries.

9. What will be the typical process time constant for followed for discrete control in discrete manufacturing industries?
a) Months
b) Less than a Second
c) Days
d) Hours

Explanation: The typical process time constant followed for discrete control in discrete manufacturing industries is less than a second.

10. Consistency and concentration of solution are the typical quality measures for continuous control in process industries.
a) False
b) True

Explanation: Consistency and concentration of solution are the typical quality measures used for continuous control in process industries. Product reliability and surface finish are some of the typical quality measures used in discrete manufacturing industries.

11. Which of the following is not a typical actuator used for continuous control in process industries?
a) Pump
b) Heater
c) Piston
d) Valves

Explanation: Piston actuators will not be typically used for continuous control in process industries. Pump, Heater and Valves are the typically used actuators for continuous control in process industries.

12. Which of the following is not a typical used sensor for discrete control in discrete manufacturing industries?
a) Limit Switches
b) Strain Gauges
c) Flow Meters
d) Piezoelectric Sensors

Explanation: Flow meter is not a typical used sensor for discrete control in discrete manufacturing industries. Limit switches, strain gauges and piezoelectric sensors are the typically used sensors. for discrete control in discrete manufacturing industries.

13. Which of the following is not a typically used variable for discrete control in discrete manufacturing industries?
a) Position
b) Temperature
c) Acceleration
d) Velocity

Explanation: Temperature is not a typical used variable for discrete control in discrete manufacturing industries. Position, acceleration and velocity are the typically used variables for discrete control in discrete manufacturing industries

Sanfoundry Global Education & Learning Series – Flexible Manufacturing System.

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