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4th Year

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4th Year Apprenticeship Test
Brennan Brow
Quiz by Brennan Brow, updated more than 1 year ago
Brennan Brow
Created by Brennan Brow almost 9 years ago
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Resource summary

Question 1

Question
What does a decoupler used in a multivariable control system do?
Answer
  • Removes intergral reset windup.
  • Couple the controller outputs.
  • Removes loop to loop interactions.
  • Allows the ability to enter separate set points.

Question 2

Question
In a 2X2 multivariable system with controlled variable b1 and b2 and manipulated variables m1 and m2. With m2 constant, a 10% change in m1 causes a 7% change in b1 and a 12% change in b2. With m1 a constant, a 1% change in m2 caused a -12% change in b1 and a 5% change in b2. Analysis of the OLM will show that......
Answer
  • The system has a positive open loop matrix.
  • The system has a negative open loop matrix.
  • The system is decoupled.
  • The system has no interaction.

Question 3

Question
Ratio control is defined as....
Answer
  • Two controlled outputs with their outputs held at a constant ratio.
  • One controlled variable controlled by a ratio to another measured variable.
  • A manipulated variable and controlled variable with their ratio held constant in the controller.
  • One controlled variable controlled by a ratio to another controlled variable.

Question 4

Question
If 14mA is input a ratio station (r=0.5) the output will be?
Answer
  • 5 mA
  • 8 mA
  • 9 mA
  • 14 mA

Question 5

Question
Feed Forward control is defined as.....
Answer
  • Information related to one or more measured disturbances is fed into a controller to reverse the effects of the disturbance on the controlled variable.
  • Deviations from a desired set point are corrected by adjusting the controller output to reduce the error between the process variable and the set point.
  • The final excursion from the error relating to the set point will be eliminated.
  • Variables relating to time discrepancies.

Question 6

Question
Feed Foward control with feedback trim is used because?
Answer
  • Model errors are responsible for causing deviation of the controllers output from the controlled variable.
  • Without trim the gain will increase rapidly.
  • The deviation in time constant must be accounted for.
  • Model errors are responsible for causing deviation of the controllers output from the measured variable.

Question 7

Question
Feed Forward control uses what to help control the loop?
Answer
  • Measured Disturbances
  • Dynamic Gain
  • Time Constant
  • Controlled Variable Deviation

Question 8

Question
A controller using split range has Valve A open from 0 to 100% when the controller is outputting 0-50% 4-12 mA and valve B open from 0 to 100% when the controller is outputting 12-20 mA. What is the position of Valve B if the controller is outputting 75%?
Answer
  • 25%
  • 50%
  • 75%
  • 100%

Question 9

Question
A problem with split range control is
Answer
  • Two valves are used to control one stream.
  • When one valve is closed the other can be opened 100%.
  • Both valves cannot be open at the same time.
  • Only one set of tuning parameters is available.

Question 10

Question
Two characteristics used in distillation control are:
Answer
  • Vaporization & Pressurization
  • Vaporization & Condensation
  • Pressurization & Condensation
  • Dew Point & Viscosisty

Question 11

Question
Reflux Ratio is:
Answer
  • Reflux Flow / Feed Flow
  • Feed Flow / Distillate
  • Reflux Flow / Distillate
  • Bottoms Flow / Tops Flow

Question 12

Question
Flooded Trays can be diagnosed by:
Answer
  • High differential pressure and similar temperatures between trays.
  • High differential pressure and different temperatures between trays.
  • Low differential pressure and similar temperatures between trays.
  • Low differential pressure and different temperatures between trays.

Question 13

Question
Feed into distillation column should enter
Answer
  • Between stripping and rectifying sections.
  • Where feed composition closely matches tray
  • Below the lowest tray.
  • Right at the top column

Question 14

Question
In an industrial type boiler there is a sudden increase in steam demand. This will cause the steam drum level to.....
Answer
  • Increase
  • Decrease
  • Stay the same.
  • Quickly recover due to controller action.

Question 15

Question
Three measurements in a boiler steam drum level controller are.....
Answer
  • Level, Feed water flow, and steam header pressure.
  • Level, Steam flow, and Feedwater head pressure.
  • Drum level, Steam Flow, and Feedwater flow.
  • Steam flow, Drum Pressure, and Feedwater Flow.

Question 16

Question
The purpose of ensuring a boiler firing box is operated at negative pressure is...
Answer
  • To protect operators from being overcome by CO.
  • To make sure the oxygen levels in the flue are at the right level.
  • A forced air fan is much stronger than an induced draft fan.
  • To make sure there is enough air to combust all the fuel.

Question 17

Question
One consideration when operating a stack gas heat recovery system is you should.....
Answer
  • Keep the temperature below the dew point.
  • Not let the gases escape to the atmosphere.
  • Burn all excess hydrocarbons before venting the gas.
  • Keep the temperature above the dewpoint of condensation.

Question 18

Question
How do you control load in a centrifugal compressor?
Answer
  • Differential Pressure
  • Discharge Valve
  • Suction Valve
  • Siphon Valve

Question 19

Question
The purpose of a thermocouple on a discharge reciprocating compressor is.....
Answer
  • to convert head to electricity to power the control panel.
  • protect the cooling system.
  • prevent equipment damage due to non-rod reversal.
  • to make the compressor more efficient

Question 20

Question
How to control surge in a centrifugal compressor?
Answer
  • Variable Vane adjustment
  • Adjust suction pressure
  • Adjust discharge pressure
  • Adjusting the recirculating bypass control valve.

Question 21

Question
What is a bypass valve used for in a reciprocating compressor?
Answer
  • Load control
  • Speed control
  • Pressure control
  • Protection

Question 22

Question
How to prevent liquid spillover into the compressor?
Answer
  • Coalescing filter
  • Desiccant and coalescing filter
  • High level dump with high level shut down control
  • High/Low level control

Question 23

Question
What is not part of an SIS?
Answer
  • Process Hazop
  • Field Devices
  • Logic Calculation (PLC/DCS)
  • Fine Control Element

Question 24

Question
What is true of an SIS system?
Answer
  • Is not included in the basic control system.
  • Does not need to be tested after installation.
  • Requires special approval to operate.
  • Drawings must be approved by the regulating body before construction.

Question 25

Question
What SIL Level is 10,000 to 1000?
Answer
  • SIL1
  • SIL2
  • SIL3
  • SIL4

Question 26

Question
Why would PST (Partial Stroke Testing) be selected on SIS Control Valves?
Answer
  • To force the valve open.
  • To force the valve closed.
  • To reduce the SIL level.
  • To verify the SIF.

Question 27

Question
What is baud?
Answer
  • Bits per second.
  • Number of discrete signal changes per second.
  • Digital characters per second.
  • Bad Ass Under Dog.

Question 28

Question
What is a characteristic of RS-232 Protocol?
Answer
  • A voltage change between bit time is a 1.
  • Voltage stays steady at first then as the signal changes from a positive to a negative the voltage at the halfway point of the bit time and then returns to zero is a 1.
  • A 1 is represented by a signal change in either direction.
  • -3 to -25 V is a mark

Question 29

Question
What kind of access method is used by Modbus?
Answer
  • Token Ring
  • Token Bus
  • Master / Slave
  • CMSA / CD

Question 30

Question
A modem using digital modulation....
Answer
  • Connects to and send out a digital signal.
  • Receives a digital signal and outputs an analog signal.
  • Receives a digital signal and outputs an digital signal.
  • Converts one communication signal to another.

Question 31

Question
Digital data can be sent over a PSTN phone network using...
Answer
  • a phone line connected directly to COM1.
  • receiving a digital signal and sending a digital signal.
  • a modem that takes analog signals and converts them to digital signals usable by phone lines.
  • a modem that takes digital signals and converts them to a usable analog signal.

Question 32

Question
A bell 202 modem uses this on its main channel
Answer
  • Amplitude modulation.
  • Frequency Shift Keying
  • Phase Shift Keying
  • HART

Question 33

Question
What topology does HART use when digital signaling?
Answer
  • Star
  • Ring
  • Multidrop Bus
  • Point to Point

Question 34

Question
How many characters per second are transmitted when a serial communication port has the following configuration 7, N, 1, 2400 Baud?
Answer
  • 230 CPS
  • 266.7 CPS
  • 333.3 CPS
  • 1200 CPS

Question 35

Question
What is not part of the EM spectrum?
Answer
  • Infared
  • Visible
  • Sound
  • Microwaves

Question 36

Question
What is a characteristics of UHF?
Answer
  • Uses Line of Sight
  • Follows the curvature of the earth.
  • is good for long distances.
  • Good for mountainous region.

Question 37

Question
What kind of signal does the diagram represent?
Image:
22235cbe-474d-459c-8ca8-90a474948220 (image/png)
Answer
  • AM
  • FSK
  • PSK
  • RS-232

Question 38

Question
What is the processor in a SCADA RTU responsible for?
Answer
  • Process Control
  • Trending
  • Error Calculations
  • Process feedback

Question 39

Question
What equipment is found at a SCADA host site?
Answer
  • Printer
  • Flow Computer
  • Control Valve
  • None of the above

Question 40

Question
Which one of the below requires SCADA?
Answer
  • Small Gas Plant
  • Beer Factory
  • Pipe Line
  • Pump Shack

Question 41

Question
Why do we need SCADA systems?
Answer
  • To connect remote processes with great distances between them.
  • We don't.
  • To provide secure digital transfer of communication.
  • To provide clear guidelines for remote communication.

Question 42

Question
Custody transfer when referring to a SCADA system represents what being traded?
Answer
  • Data Values
  • Accounting Information
  • Commodities
  • D

Question 43

Question
What is needed for a PLC to function?
Answer
  • A rack, controller module, power supply, I/O modules, and configuration software.
  • A rack, controller module, HMI, I/O modules, and configuration software.
  • A rack, UPS Systems, I/O modules, and configuration software.
  • I/O modules, and configuration software.

Question 44

Question
What is the proper procedure for making changes to PLC programming?
Answer
  • Upload program, save old program, make changes, and download changes.
  • Delete old program, make changes, and upload new programs.
  • Download program, save old program, make changes, and download changes.
  • Upload program, make changes, download changes, and program.

Question 45

Question
Where are configuration and control programs stored in case of power failure?
Answer
  • PC
  • CD
  • EEPROM
  • RAM

Question 46

Question
What would FBD be used for?
Answer
  • Analog Control
  • Analog and/or Discrete control
  • Slow Processes
  • Fast Processes

Question 47

Question
A process needing analog control and discrete control would use what langauges
Answer
  • Ladder/FBD
  • SFC
  • Structured Text
  • C/C++

Question 48

Question
What language is best for batch control?
Answer
  • Ladder Logic
  • Sequential Function Chart
  • Instruction List
  • Function Blocks

Question 49

Question
What is not an IEEE 61120 language?
Answer
  • Function Block Diagrams
  • Machine List
  • Ladder Diagram
  • Structured Text

Question 50

Question
Two PLC's are conncted using RS-232, What topology is this?
Answer
  • Master / Slave
  • Star
  • Peer to Peer
  • Bus

Question 51

Question
What should be considered when updating the PLC Software Version?
Answer
  • Hardware and Software versions are the same number.
  • Software is compatible with field devices.
  • Software is compatible with hardware.
  • Software is functioning correctly prior to updating.

Question 52

Question
What FB Value should be connected to the PV of this function block?
Image:
1790d1c3-b27c-4ca6-a825-3e882ff37e45 (image/png)
Answer
  • The input of the analog output function block
  • The output of the analog output function block
  • The output of the analog input function block
  • The input of the analog input function block

Question 53

Question
What is the proper procedure to repair broken equipment?
Answer
  • Inform operations, put loop in manual, make repairs, and commission loop.
  • Inform operations, make repairs, put loop in manual, and commission loop.
  • Make repairs, commission loop, and inform operations.
  • Make repairs, inform operations, put loop in manual, and commission loop.

Question 54

Question
When forcing logic in a PLC what precautions need to be taken?
Answer
  • Save data first.
  • Secure all processes and protect personnel.
  • The loop is set to manual.
  • PLC has backup power.

Question 55

Question
In the following structured text statement what will be used to finish the calculation? Var1 = (Input, Integer) Var2 = (Internal, Real) Var3 = (Output, Integer) Var4 = (Output, Real) Var5 = (Internal, Integer) Var6 = (Input, Real) SUM = (Internal, Real) SUM:=5.0 + _____
Answer
  • Var1
  • Var2 Only
  • Var2 and 6
  • Var3

Question 56

Question
The following RTU needs to execute a sequential function chart program light is initially off. When the start button is pressed light comes on. Light stays on for 2.5 Seconds. Once light turns off wait for start button to be pressed again. Which program will accomplish this task correctly?
Image:
24b6010a-dfed-414c-bad1-ec300a6e03dc (image/png)
Answer
  • A
  • B
  • C
  • D

Question 57

Question
When installing several devices that are too far away from the PLC, what must you also install?
Answer
  • Signal Conditioning System
  • New Controller
  • Remote I/O
  • Extra Cabling

Question 58

Question
When there is a need to trend values what component of a DCS needs to be added?
Answer
  • RAM
  • Extra memory
  • A data historian
  • A register

Question 59

Question
Why do we use redundancy in a DCS System?
Answer
  • To raise production
  • To lower costs
  • For better reliability
  • To allow more streamlined control

Question 60

Question
What happens in a DCS with redundant controllers if the main controller fails?
Answer
  • Second Controller automatically takes over.
  • The changeover process begins.
  • The system is placed into manual until the changeover is complete.
  • The system continues to run under the last parameters until the second controller is activated.

Question 61

Question
Why do we use redundant cabling in DCS systems?
Answer
  • For two way communication.
  • For duplex communication.
  • In case one cable breaks.
  • For better transmission quality.

Question 62

Question
What is the disadvantage of using the auto tune feature in the DCS?
Answer
  • There is no disadvantage to using auto tune.
  • Auto tune can sometimes over estimate error resulting in an increased gain.
  • Performance will be low compared to real tuning.
  • It will mask errors in the control scheme.

Question 63

Question
When using trending in a DCS for loop tuning what feature is most important?
Answer
  • Update time of 10 mins.
  • Data points need to be as close to real time as possible.
  • Loop must be in manual.
  • Control System must not be live during tuning.

Question 64

Question
What's not a good reason to upgrade software versions of the DCS?
Answer
  • To fix software glitches.
  • To have the new version.
  • To take advantage of new features.
  • To fix security issues.

Question 65

Question
Why do we have alarm management software?
Answer
  • To combat color blindness
  • To "dummy" proof alarms.
  • To prioritize alarms.
  • To get rid of un-wanted alarms.

Question 66

Question
Prioritize these alarms from Most to Least critical: 1. Data Communication is broken. 2. PV out of range on Transmitter. 3. Gas Leak.
Answer
  • 2, 3, 1
  • 1, 2, 3
  • 3, 1, 2
  • 2, 1, 3

Question 67

Question
What are the main parts of a DCS?
Answer
  • Control Database, HMI, and Controller
  • HMI and Controller
  • Software, Control Database, HMI, and Controller
  • Control Database, HMI, Rack, and Controller

Question 68

Question
What is the procedure for making changes to to a DCS configuration?
Answer
  • Upload program, Download configuration changes, Verfiy changes.
  • Upload program, Download full configuration, Verfiy changes.
  • Download program, Make configuration changes, Verfiy changes, Upload Program.
  • Download program, Verfiy changes, Make configuration changes, Upload Program.

Question 69

Question
What access level must you have to make changes to a DCS configuration?
Answer
  • Operator
  • Administrator
  • Manager
  • Technician

Question 70

Question
What are the main components of a VSD?
Answer
  • Signal Booster, Filter, Inverter
  • Filter, Converter, Inverter
  • Rectifier, Filter, Converter
  • Rectifier, Filter, Inverter

Question 71

Question
If a VSD has a 4-20 mA input and is controlled from 1800 to 3600 rpm, What will the speed be if the input is 8mA?
Answer
  • 2000 rpm
  • 2250 rpm
  • 2550 rpm
  • 3000 rpm

Question 72

Question
What is not the purpose of an HMI?
Answer
  • To enable us to interact with a computer program.
  • To directly control the process.
  • To program and configure the controller.
  • To view operations of the plant.

Question 73

Question
What type of program must be used to develop an HMI for use on a monitor?
Answer
  • Runtime software
  • Program or configuration software
  • MS Paint
  • Graphix based software

Question 74

Question
How do you connect an HMI to a different manufacturer's controller?
Answer
  • Router
  • I/O Servers
  • Device Drivers
  • Modem

Question 75

Question
What is pre-cut column used for?
Answer
  • To separate carrier gas from sample.
  • To separate carrier gas from oxygen
  • To alter the column paths
  • To remove impurities before main column

Question 76

Question
How is concentration determined from a chromatogram?
Answer
  • Peak height
  • Peak area
  • Elution Time
  • None of the above.

Question 77

Question
What will happen to an IR Analyzer detector as IR passes through the sample?
Answer
  • Temperature decrease from the sample absorbing IR.
  • Temperature increase.
  • Pressure Increase.
  • Pressure Decrease.

Question 78

Question
Describe the function of a Peltier Cooling Device.
Answer
  • RTD attached to power supply.
  • Thermistor attached to power supply.
  • Heater connected to power supply.
  • Thermocouple attached to power supply.

Question 79

Question
What is the difference between a GC and an LC?
Answer
  • Mobile Phase
  • Stationary Phase
  • Column
  • None of the above.

Question 80

Question
Florescence is what kind of analysis
Answer
  • Absorbance
  • Transmittance
  • Secondary Emissions.
  • Reflection

Question 81

Question
NO + O3 -> NO2 and infared radiation is what kind of reaction?
Answer
  • Chemiluminescence
  • Bioluminescence
  • Chemical
  • Ionic

Question 82

Question
How to measure total oxides of Nitrogen?
Answer
  • Multiply Nitrogen by detector response.
  • Catalytic conversion of all NOx to NO.
  • Change detector to measure different types of NOx.
  • None of the above.

Question 83

Question
The chopper in a combined beam IR analyzer does what?
Answer
  • Alternates IR to the sample and references.
  • Simultaneously blocks all IR into the detector.
  • Reflects IR into the reference.
  • Reflects IR into the sample.

Question 84

Question
What does a Mass Spectrometer separate components into and measure?
Answer
  • Ions according to their mass to charge ratio.
  • Molecules according to size.
  • Ions according to mass.
  • Ions according to charge.

Question 85

Question
Alberta workplace hazardous protection values for H2S and CO are only given in 1 and 24 hour exposure limits. Why?
Answer
  • If you are exposed to it for a year you are dead anyway.
  • Both are heavier than air so they can't be breathed in.
  • They will be scrubbed out by acid rain.
  • These substances get oxidized into the atmosphere and convert to SO2 and CO2.

Question 86

Question
What accuracy of analyzers must be used to monitor ambient concentrations of SO2, NO, H2S?
Answer
  • PPM and PPB detectors
  • % Concentration
  • PPT Analyzer
  • All are acceptable.

Question 87

Question
When performing maintenance planning what reduces downtime the most?
Answer
  • Preventive / Reactive
  • Preventive / Predictive
  • Reactive / Predictive
  • Reactive / Preventative

Question 88

Question
When stocking parts what needs to be considered?
Answer
  • Cost of inventory
  • Critical nature of systems
  • Time of delivery of spare parts.
  • Time to replace stock

Question 89

Question
What are KPI's used for?
Answer
  • To decrease production
  • To decrease safety
  • To decrease down time
  • To increase cost to companies

Question 90

Question
In order to sign off on a specific task what must the apprentice do?
Answer
  • Demonstrate competency in the task.
  • Observe the task being done.
  • Take an exam and pass.
  • Have an authorized journeyman sign off.

Question 91

Question
Who makes the trade outline?
Answer
  • Local apprenticeship office.
  • Provincial Apprenticeship Commitee
  • AIT
  • Industry

Question 92

Question
What does a red seal do?
Answer
  • Allows inter-provincial mobility.
  • Allows global mobility
  • Gives a pay increase.
  • Provides differentiation between a journeyman and a continuing education applicant.

Question 93

Question
A sample loop replaces?
Answer
  • Sample Port
  • Fast Loop
  • Sample System
  • All of the above

Question 94

Question
What light source is required for chemiluminescence?
Answer
  • A Bio-light source.
  • No light source is needed it is the result of a chemical reaction.
  • A high molecular energy fluid and a catalyst.
  • It is an unexplained chemical phenomena.

Question 95

Question
What are two similar types of process?
Answer
  • Liquid Flow and Level
  • Liquid Level and Pressure
  • Gas and Liquid Level
  • Gas and Liquid Temperature

Question 96

Question
A wavelength passed through a prism is an example of?
Answer
  • A rainbow
  • Refraction
  • Detraction
  • Reflection

Question 97

Question
What are Modicon addresses?
Answer
  • Channels
  • IP
  • Frequency
  • Bits

Question 98

Question
How many slaves are available on Modbus?
Answer
  • 1-247
  • 1-123
  • 1
  • 10-247

Question 99

Question
An Allen Bradley PLC is addressed by?
Answer
  • Rack, Group, Terminal
  • Card, Tag, Terminal
  • Rack, Card, Controller
  • Terminal, Rack, Group

Question 100

Question
An Allen Bradley PLC's Input terminal LED shows?
Answer
  • Input Voltage
  • Output Voltage
  • Bits
  • Reading in %

Question 101

Question
MOORE controller symbol means what?
Answer
  • Numeric Value
  • Process Controller
  • Software Controller
  • Requires special training to operate

Question 102

Question
Data communication going only going 1 way to a remote station to a local station, What type of communication does this represent?
Answer
  • TCP/IP
  • Simplex
  • Duplex
  • Bus

Question 103

Question
A P only controller offset is reduced by?
Answer
  • A decrease in proportional band or an increase in gain.
  • Manual Reset
  • Integral
  • Derivative

Question 104

Question
In an Allen Bradley PLC how large is a T timer?
Answer
  • 3 words, 16bits/word, 48 bits total
  • 2 words, 24 bits/word 48 bits total
  • 5 words, 16 bits/word, 80 bits total
  • 4 words, 32 bits/word, 128 bits total

Question 105

Question
When SCADA is using Satellite communication it is called?
Answer
  • Geo-oriented
  • RTU
  • Geosynchronous
  • Real time

Question 106

Question
What are the frames or boundaries of a Synchronous data stream?
Answer
  • Preamble and Postamble
  • Precomm and Postcomm
  • Buffer and Render
  • Leader and Tail

Question 107

Question
What is the first bit after the start bit on Asynchronous communication, RS232?
Answer
  • Most Significant Bit (MSB)
  • Least Significant Bit (LSB)
  • Mean Significant Bit (MSB)
  • Lead Significant Bit (LSB)

Question 108

Question
This diagram is called?
Image:
10a3fee9-0e57-4cbb-875a-5191a05c7f1a (image/png)
Answer
  • DTE to DCE known as a Null Modem
  • DTE to DTE known as a Null Modem
  • DTE to DTE known as a Crossover Cable
  • DTE to DCE known as a Crossover Cable

Question 109

Question
Where is the rectifying section?
Answer
  • Above the feed in
  • Under the feed in
  • Before the feed outlet
  • The base of the distillation tower.

Question 110

Question
What is reflux ratio?
Answer
  • The feed rate to reflux rate back to the tower
  • The amount lost to the process
  • Backwash from the oulet
  • Dead space at the top.

Question 111

Question
What is ¼ amplitude decay?
Answer
  • When the first overshoot is less than the second by a factor of 4.
  • When the first overshoot is greater than the second by a factor of 4.
  • When the overshoot is eliminated in 4 waves.
  • When the peak decreases by 1/4 of its height in through each wave.

Question 112

Question
What is a self regulating process?
Answer
  • A process without a controller.
  • When the set point is moved the system will stabilize on its own.
  • A process that cannot be changed through operator intervention.
  • A process without a controlled variable.

Question 113

Question
What is the most difficult process aspect to control?
Answer
  • Dead Time (Lag)
  • Error
  • Upsets
  • Measurement

Question 114

Question
What does a control valve control?
Answer
  • The manipulated variable
  • The measured variable
  • Flow
  • Pressure

Question 115

Question
What is represented by the slope of a reaction curve?
Answer
  • The response or reaction rate
  • Error
  • Dead Time
  • Controller Output

Question 116

Question
What is the definition of Shrink in a boiler system?
Answer
  • Decrease in steam flow
  • Increase in steam flow
  • Pressure Increase
  • Temperature Loss

Question 117

Question
What government agency sets safety standards?
Answer
  • OH&S
  • CSA
  • ISO
  • FM

Question 118

Question
What happens if the differential pressure (∆P) increases in a distillation tower?
Answer
  • Trays will flood
  • Tower will empty
  • Tower is plugged
  • Nothing

Question 119

Question
What causes dry trays in a distillation tower?
Answer
  • Too high of a temperature
  • Plugging at the inlet
  • A high vapor rate signaled by a decrease of the Differential Pressure
  • Critical failure

Question 120

Question
A UV analyzer measures?
Answer
  • SO2
  • CO2
  • NOx
  • UV

Question 121

Question
What does OSI (Open System Interconnection) do?
Answer
  • Provides manufacturer's with strict guidelines for communication
  • Networks all communications
  • Nothing
  • Converts all signals to one standard langauge

Question 122

Question
What is a GLC?
Answer
  • Gas Laser Chromatograph.
  • Gas Liquid Chromatograph with Liquid sensor.
  • Gas Chromatograph with a Liquid column. (2 Phases)
  • A Rapper.

Question 123

Question
Selective control is used for?
Answer
  • Protection of equipment according to safety standards
  • To reduce error in rapid processes
  • To stop reset windup
  • For cascade systems with multiple slaves

Question 124

Question
What is the solid packing in a Gas Chromatograph is used for?
Answer
  • Provides an Inert surface
  • To extend column life
  • To remove toxins that may poison the sensor
  • To reinforce columns from wear and velocity of the medium

Question 125

Question
A sample probe should be placed where in the pipe?
Answer
  • Process dependent
  • Away from the wall at the center of the pipe
  • At the top of the pipe
  • At the bottom of the pipe

Question 126

Question
What language does a SFC (Sequential Function Chart) use?
Answer
  • Graphical
  • Text (Word)
  • Function Block
  • HTML

Question 127

Question
C programming uses?
Answer
  • Assembler
  • Compiler
  • Builder
  • Programmer

Question 128

Question
How does an Allen Bradley PLC communicate to different modules?
Answer
  • Over the chassis back plate or back plane.
  • Through SCADA
  • RSLogix
  • Ethernet

Question 129

Question
Dirty windows block?
Answer
  • IR
  • UV
  • Microwaves
  • Heat

Question 130

Question
What type of communication does Baseband use?
Answer
  • Digital
  • Analog
  • Serial
  • Virtual

Question 131

Question
Cross limiting fuel control is used for what?
Answer
  • Ensures excess air to prevent negative pressure in the firebox
  • To optimize the burner efficiency
  • Optimize fuel to additive ratio and maximize profits
  • Ensures excess air to prevent positive pressure in the firebox

Question 132

Question
Where does signal from a steam signal controller boiler on a multi capacity system go?
Answer
  • Goes to the boiler master
  • Goes to the plant master
  • Goes to the PLC
  • Goes to the DCS

Question 133

Question
How do you tune a hi-capacity tank?
Answer
  • Reaction curve method in manual
  • Auto-tune
  • Reaction curve method
  • Reverse control

Question 134

Question
What is the definition of Ratio?
Answer
  • Controlled variable to the measured variable
  • PV to the response
  • Measured signal to the controller output
  • None of the above

Question 135

Question
Use R=Ro(SPANw)/SPANc to solve ratio question? Ro = 5 SPANw = 350 SPANc = 1400
Answer
  • .75
  • 1.25
  • 2.50
  • 5

Question 136

Question
What is a valve positioner equivalent to?
Answer
  • Cascade Control
  • Signal Booster
  • I/P
  • SMART controller

Question 137

Question
Benefits of cascade control?
Answer
  • Removes disturbances in the manipulated variable
  • Removes disturbances in the controlled variable
  • Redundancy
  • All of the above

Question 138

Question
Typical flow controller will have what settings?
Answer
  • 0.5 Gain and a 0.05min/rpt, PB of 2
  • 5 Gain and a 0.05min/rpt, PB of 10
  • 1 Gain and a 2min/rpt, PB of 2
  • 2 Gain and a 0.75min/rpt, PB of 3

Question 139

Question
A PID controller will work best on what type of process?
Answer
  • Non-noisy processes (Temperature)
  • Noisy Processes (Flow)
  • Stable Processes (Level)
  • Fast Processes (Pressure)

Question 140

Question
What is the difference in types of mass spectrometers?
Answer
  • Analysis time
  • How they separate ions
  • Gas or Liquid Phase
  • Source method

Question 141

Question
What does the manifold do in a Mass Spectrometer?
Answer
  • Separates components
  • Filters out dangerous components
  • Protects the unit from High Pressures and Temperatures
  • Provides different process connections

Question 142

Question
What does the length of a cell represent?
Answer
  • Type of component to be measured
  • Amount of concentration that can be measured
  • Accuracy
  • Manufacturer

Question 143

Question
Modbus communicates in?
Answer
  • Serial
  • Digital
  • ASCII and RTU data formats
  • Bus

Question 144

Question
Differential Signal communication is?
Answer
  • Variable
  • Balanced
  • Active
  • A Two Emitter system

Question 145

Question
Parallel fuel and air does not?
Answer
  • Compensate for air disturbance
  • Compensate for crackling
  • Function without ratio control
  • Optimize fuel

Question 146

Question
What type of boiler control uses large steam capacity in relation to it’s drum capacity?
Answer
  • 3 Element
  • Dual Element
  • Double Drum
  • Tandem Boilers

Question 147

Question
What is the Hayes command to a modem?
Answer
  • AT
  • TA
  • DF
  • RE

Question 148

Question
Output tracking is?
Answer
  • PID block or Set point tracks the controller output on manual
  • Necessary for auto-tune
  • Live error measuerment
  • Used to ensure the controller output is actuated correctly

Question 149

Question
In Feed forward control what must occur?
Answer
  • Continuous computing
  • Output tracking
  • Cascade control
  • Redundant controllers

Question 150

Question
PI Controller with a prolonged error is said to be?
Answer
  • Saturated or has reached saturation
  • Integral failure
  • Improper Manual Reset
  • Any combination of the above

Question 151

Question
Mass spectrometers operate on?
Answer
  • High temperature and high vacuum
  • Low temperature and low pressure
  • High temperature and low vacuum
  • Low temperature and high pressure

Question 152

Question
Liquid level or gas pressure, which is noisier?
Answer
  • Liquid level, non-compressible
  • Gas pressure, high energy
  • Both are noisy
  • Both are not noisy

Question 153

Question
What is the qualitative output from a Chromatograph?
Answer
  • Retention Time
  • Elution Time
  • Peak Height
  • Peak Area

Question 154

Question
What is the qualitative output from a Mass Spectrometer?
Answer
  • Frequency
  • Charge
  • Time of flight
  • Flow Rate

Question 155

Question
What is the qualitative output from a Gas Chromatograph?
Answer
  • Elution Time
  • Retention Time
  • Peak Height
  • Peak Area

Question 156

Question
A permeation tube is filled with?
Answer
  • Sample under pressure
  • Air
  • Inert Gas
  • Nitrogen

Question 157

Question
What does precut do?
Answer
  • Gets rid of the heavy component of contamination
  • Removes erroneous readings present at start up
  • Provides a representative sample for configuration
  • Allows the senor time to stabilize prior to the next reading

Question 158

Question
Where is PID executed in a DCS?
Answer
  • Local microprocessor card
  • Control Board
  • RAM
  • All of the above

Question 159

Question
Allen Bradley looks at what when considering a function?
Answer
  • A table
  • A matrix
  • An index
  • The final value

Question 160

Question
Self regulating process with a step change give what output?
Answer
  • First order curve
  • Self integrating
  • First order + Dead time
  • None of the answers are correct

Question 161

Question
What is the range given -20 to 50°C?
Answer
  • 70
  • 30
  • 50
  • Depends on the sensor

Question 162

Question
What is the problem if reset windup is present in a non-select controller in a selective system?
Answer
  • The wrong tieback
  • The wrong controller is the Master
  • Too much integral applied on the slave
  • Too much derivative applied on the Master

Question 163

Question
What does the “Operating license” in analyzers tell you?
Answer
  • Parameters to be measured
  • Certification completed
  • Certified technicians for maintenance
  • Nothing

Question 164

Question
Where can you use a median selector?
Answer
  • In redundant instrumentation and auctioneering
  • SIL applications only
  • Cascade control
  • Complex level with multiple measurements

Question 165

Question
Where is the highest gain on a square root extractor?
Answer
  • At the lowest input
  • At the highest input
  • Outside the calibrated range
  • At 0

Question 166

Question
In a cascade flow loop the 2nd loop oscillates when?
Answer
  • High Flow
  • Low Flow
  • High Pressure
  • Low Pressure

Question 167

Question
If step change is introduced into a single capacity process, what is the output?
Answer
  • Exponential
  • Logarithmic
  • Linear
  • Equal %

Question 168

Question
What does a positive matrix have?
Answer
  • Either 3 positives and 1 negative or 3 negatives and 1 positive
  • 2 positives and 2 negatives
  • All positives
  • 1 Negative

Question 169

Question
What precautions do you take with a UV source?
Answer
  • Life span of a UV source is short
  • Sensor contamination from external sources
  • Poisoning from external light
  • Flammable

Question 170

Question
What does an IR chopper do?
Answer
  • Sets frequency of the analyzer
  • Checks the sensor has not become saturated
  • Used to block the measuring and the reference beams alternatively
  • None of the above

Question 171

Question
Fluorescence analyzer does what?
Answer
  • Ambient SO2
  • Ambient NOx
  • Various gases
  • LEL & UEL

Question 172

Question
With a 9 psi signal and a ratio of 1.4, what is the output?
Answer
  • 11.4
  • 12.6
  • 8.4
  • 14

Question 173

Question
Where are FCO and Function Blocks stored in a MOORE controller?
Answer
  • EPROM
  • EEPROM
  • Microprocessor
  • Flash memory

Question 174

Question
How do you de-couple?
Answer
  • Remove multiple controller interaction
  • Open the loop
  • Eliminate the Master measured variable
  • Add an additional controller

Question 175

Question
What is ratio control?
Answer
  • One measured variable is being controlled by the ratio of another measured variable
  • One measured variable is being controlled by the ratio of another controlled variable
  • One controlled variable is being controlled by the ratio of another measured variable
  • One controlled variable is being controlled by the ratio of another controlled variable

Question 176

Question
What is the difference between SCADA and DAS?
Answer
  • DAS is information collection only
  • SCADA requires a satellite connection
  • DAS is limited by 2 GB of memory
  • SCADA requires an external power supply

Question 177

Question
What is a HART transmitter operating in when connected on a multidrop?
Answer
  • Digital
  • Analog
  • Control
  • Reader

Question 178

Question
Exception reporting does what?
Answer
  • List non-compliant equipment
  • Reduces communication requirements
  • Explains changes and modifications to the plant layout
  • None of the above

Question 179

Question
What are the serial ports called or alternate names for DTE’s?
Answer
  • Com 1, 2, and 3
  • Com 4, 5, and 6
  • Com 1, 5, and 6
  • Com 2, 3, and 6

Question 180

Question
What is the factor of Dead time?
Answer
  • 4X
  • 3X
  • 2X
  • 5X

Question 181

Question
What is the problem or disadvantage with P-Only control?
Answer
  • Error between SP and PV always present. (Offset)
  • No automatic function
  • Error is not consistent
  • Slow reaction time

Question 182

Question
What is the purpose of Derivative?
Answer
  • Derivative is used for a multi-capacity system
  • Derivative is used for a single capacity system
  • Derivative is used for a first order process
  • Derivative is used to reduce dead time

Question 183

Question
A stationary liquid column in a GLC does what?
Answer
  • Both absorb and adsorb
  • Separates liquid components
  • Allows the process to reach the correct pressure and temperature for analysis
  • All of the above

Question 184

Question
What is effective dead time?
Answer
  • Actual Dead Time
  • Theoretical Dead Time
  • Calculated Dead Time
  • dT

Question 185

Question
What is the definition of feedback control?
Answer
  • An error driven control system in which the control signal to the actuators is proportional to the difference between the command signal and a feedback signal from the process variable being controlled.
  • Data extracted from the process reaction is used to calculated the next response
  • Error is monitored through the "downstream" reaction
  • Additional measurement after the FCE is used to calculate the controller response

Question 186

Question
How does an Allen Bradley PLC read?
Answer
  • One rung at a time, top to bottom, left to right
  • One rung at a time, bottom to tom, left to right
  • One rung at a time, top to bottom, right to left
  • All rungs at once, top to bottom, left to right

Question 187

Question
What is a Yagi antenna used for?
Answer
  • A Yagi antenna is a unidirectional antenna commonly used in communications when the frequency is above 10Mhz
  • A Yagi antenna is a multidirectional antenna commonly used in communications when the frequency is above 10Mhz
  • A Yagi antenna is a unidirectional antenna commonly used in communications when the frequency is below 10Mhz
  • A Yagi antenna is a multidirectional antenna commonly used in communications when the frequency is below 10Mhz

Question 188

Question
What is QAD gain?
Answer
  • 0.5
  • 1
  • 3
  • .75

Question 189

Question
What is the QAD damping factor?
Answer
  • Amplitude 1/Amplitude 2 ( 180 degrees out of phase)
  • Amplitude 1/Amplitude 2 ( 360 degrees out of phase)
  • Amplitude 2/Amplitude 1 ( 180 degrees out of phase)
  • Amplitude 1/Amplitude 4 ( 1080 degrees out of phase)

Question 190

Question
What is the QAD decay ratio?
Answer
  • Amplitude 2/Amplitude 1 (360 degrees out of phase)
  • Amplitude 1/Amplitude 2 (180 degrees out of phase)
  • Amplitude 4/Amplitude 1 (1080 degrees out of phase)
  • Amplitude 2/Amplitude 1 (180 degrees out of phase)

Question 191

Question
What are the two feed forward process measurements required?
Answer
  • Controlled variable and disturbances
  • Measured signal and error
  • Dead time and offset
  • Pressure & Temperature

Question 192

Question
How is a smart transmitter connected to a DCS?
Answer
  • Through the Field bus
  • Through the Profi bus
  • HART
  • Modbus

Question 193

Question
Controller configurations are uploaded to?
Answer
  • Controller to PC
  • Controller to PLC
  • Controller to DCS
  • Controller to SCADA

Question 194

Question
What is a precaution when dealing with UV radiation?
Answer
  • Look at it through a filter
  • Potential combustion
  • Radiation
  • Reduces oxygen present

Question 195

Question
What type of detectors do Gas chromatographs normally use?
Answer
  • FID (Flame ionization detector)
  • PID (Photo ionization detector)
  • Wheatestone bridge
  • Electron sensor

Question 196

Question
What state would the secondary flow loop in a cascade loop be?
Answer
  • It would have a square root extractor and it would oscillate at high flow due to the high gain at high flow of the extractor
  • It would have a square root extractor and it would oscillate at low flow due to the high gain at low flow of the extractor
  • It would oscillate at high temperature due to high gain
  • It would oscillate at high pressure due to low gain

Question 197

Question
Tuning using the ultimate gain method the integral setting?
Answer
  • TN
  • NT
  • Z-N
  • OP

Question 198

Question
What signifies High Level programming langauges?
Answer
  • English words (Like “C”)
  • Multiple outputs
  • Live fucntioning
  • Configurable systems

Question 199

Question
Attenuation methods in fiber optics?
Answer
  • Scattering, absorption, bending and connection
  • Poisoning, absorption, bending and connection
  • Scattering, adsorption, bending and connection
  • Absorption, bending and connection

Question 200

Question
Fuzzification is ...
Answer
  • The first step in a fuzzy interfering process
  • When a signal becomes fuzzy (Erratic)
  • When the control output is changed before being actuated
  • All of the above
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