QUIZ 1

Question 1

defines as the art and science of measurement and control of the process variables within a production or manufacturing area

Answer 1

Instrumentation

Question 2

the engineering discipline that applies control theory to design systems with desired behaviors

Answer 2

Control Engineering

Question 3

Give at least 1 Instrumentation and control engineer are required to do

Answer 3

Design and Develop a Control System
Maintain and manage the existing Control System
Collaborate with design engineers and others stuffs involved in the production process
Troubleshoot
Ensure quality standards are maintained, also comply with safe and healthy regulations

Question 4

Give 1 subject to learn

Answer 4

Industrial Instrumentation
System Dynamics
Process Control
Control System

Question 5

What do you call the known quantity?

Answer 5

Standard

Question 6

The quantity to be measured

Answer 6

Measurand

Question 7

The read out

Answer 7

Result

Question 8

Process of Comparison

Answer 8

Measurement

Question 9

the first element in the Control loop to measure process variable, they are also called as primary elements.

Answer 9

Sensing Device

Question 10

Sample of Sensing Device

Answer 10

Thermocouple
Conductivity Level Sensor
Venturi Tubes
Orifice Plates

Question 11

Device that converts mechanical to electrical energy

Answer 11

Transducer

Question 12

a device that used to convert a reading from a sensor or transducer into a standard signal to a monitor or controller

Answer 12

Transmitter

Question 13

Sample of Transmitters

Answer 13

Pressure transmitters
Flow Transmitters

Question 14

a device that converts one type of signal into another type of signal

Answer 14

Converter

Question 15

transmit the process variable measurement from the instrument to a centralized control system.

Answer 15

Signal

Question 16

Three types of signals

Answer 16

1. Pneumatic Signal
2. Analog Signal
3. Digital Signal

Question 17

the signals produced by changing the air pressure in a signal pipe in proportion to the to measured change in a process variable.

Answer 17

Pneumatic Signal

Question 18

The most common standard electrical signal is the 4-20mA current signal

Answer 18

Analog Signal

Question 19

discrete levels or values that are combined in specific ways to represent process variables .

Answer 19

Digital Signal

Question 20

a human readable device that displays information about the process. Some indicators simply display the measured variable while others have control buttons that enable operators to change settings

Answer 20

indicators

Question 21

a device that records the output of a measurement devices.

Answer 21

Recorder

Question 22

a device that receives data from a measurement instrument, compares that data to a programed set point, and, if necessary, signals a control element to take corrective action.

Answer 22

Controller

Question 23

Sample of a controller

Answer 23

PLC or programmable logic controllers
DCS or Distributed Control System

Question 24

is part of control system that acts to physically change the manipulated variable. in most cases, the final control element is a valve used to cut the fluid flow.

Answer 24

Correcting Element/Final Controller

Question 25

What is the final controller

Answer 25

Actuator - valve actuators

Question 26

What does ISA means?

Answer 26

International Society of Automation

Question 27

refers to the methods of changing or refining raw materials to create a product

Answer 27

Process

Question 28

efers to the methods that are used to control process variables when manufacturing a product

Answer 28

Process Control

Question 29

process variable is a condition of the process fluid ( a liquid of gas) that can change the manufacturing process in some way

Answer 29

Process Variable

Question 30

Give 1 Process Variable

Answer 30

Pressure, Flow, Level, temperature, Density, pH

Question 31

value for a process variable that is desired to be maintained

Answer 31

Set Point

Question 32

difference between the measurable variable, and the set point.

Answer 32

Error

Question 33

an undesired change in one of the factors that can affect the process variable

Answer 33

Load disturbance

Question 34

What are the three tasks of a control loop

Answer 34

Measurement, Comparison,& Adjustment

Question 35

If in a physical system there is no automatic correction of the variation in its output, it is called an open loop system.

Answer 35

Open Loop Control System

Question 36

is a type of loop system where the output has an effect upon the input quantity in such a manner as to maintain the desired output value.

Answer 36

Closed Loop Control System

Question 37

What is the another name for Open Loop System?

Answer 37

Non-Feedback Control System

Question 38

gathering information on the controlled variable and comparing it to the set point; making a decision based on the comparison; and taking action to eliminate any differences between the controlled variable and end the set point.

Answer 38

Feedback Control

Question 39

acts the moment a disturbance occurs, without having to wait for a deviation in process variable. This enables a feedforward controller to quickly and directly cancel out the effect of a disturbance.

Answer 39

Feedforward Control

Question 40

This combination has its function on the system, the feedforward control attempts to eliminate the effects of measurable disturbances and the feedback control corrects for unmeasurable disturbances, modelling errors.

Answer 40

Feedforward plus Feedback Control

Question 41

Process design and operations often calls for keeping a certain ratio two or more flow rates.

Answer 41

Ratio Control

Question 42

the controller output is split and sent into two or more control valves. When a single controller is employed to control two or more final control elements.

Answer 42

Split Range Control

Question 43

there are two or more controllers of which one controller’s output drives the set point of the another controller.

Answer 43

Cascade Control