4288936
Descripción
Test por Brennan Brow, actualizado hace más de 1 año
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Creado por Brennan Brow
hace más de 8 años
|
|
Pregunta 1
Pregunta
What does a decoupler used in a multivariable control system do?
Respuesta
-
Removes intergral reset windup.
-
Couple the controller outputs.
-
Removes loop to loop interactions.
-
Allows the ability to enter separate set points.
Pregunta 2
Pregunta
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......
Respuesta
-
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.
Pregunta 3
Pregunta
Ratio control is defined as....
Respuesta
-
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.
Pregunta 4
Pregunta
If 14mA is input a ratio station (r=0.5) the output will be?
Respuesta
-
5 mA
-
8 mA
-
9 mA
-
14 mA
Pregunta 5
Pregunta
Feed Forward control is defined as.....
Respuesta
-
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.
Pregunta 6
Pregunta
Feed Foward control with feedback trim is used because?
Respuesta
-
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.
Pregunta 7
Pregunta
Feed Forward control uses what to help control the loop?
Respuesta
-
Measured Disturbances
-
Dynamic Gain
-
Time Constant
-
Controlled Variable Deviation
Pregunta 8
Pregunta
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%?
Respuesta
-
25%
-
50%
-
75%
-
100%
Pregunta 9
Pregunta
A problem with split range control is
Respuesta
-
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.
Pregunta 10
Pregunta
Two characteristics used in distillation control are:
Respuesta
-
Vaporization & Pressurization
-
Vaporization & Condensation
-
Pressurization & Condensation
-
Dew Point & Viscosisty
Pregunta 11
Pregunta
Reflux Ratio is:
Respuesta
-
Reflux Flow / Feed Flow
-
Feed Flow / Distillate
-
Reflux Flow / Distillate
-
Bottoms Flow / Tops Flow
Pregunta 12
Pregunta
Flooded Trays can be diagnosed by:
Respuesta
-
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.
Pregunta 13
Pregunta
Feed into distillation column should enter
Respuesta
-
Between stripping and rectifying sections.
-
Where feed composition closely matches tray
-
Below the lowest tray.
-
Right at the top column
Pregunta 14
Pregunta
In an industrial type boiler there is a sudden increase in steam demand. This will cause the steam drum level to.....
Respuesta
-
Increase
-
Decrease
-
Stay the same.
-
Quickly recover due to controller action.
Pregunta 15
Pregunta
Three measurements in a boiler steam drum level controller are.....
Respuesta
-
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.
Pregunta 16
Pregunta
The purpose of ensuring a boiler firing box is operated at negative pressure is...
Respuesta
-
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.
Pregunta 17
Pregunta
One consideration when operating a stack gas heat recovery system is you should.....
Respuesta
-
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.
Pregunta 18
Pregunta
How do you control load in a centrifugal compressor?
Respuesta
-
Differential Pressure
-
Discharge Valve
-
Suction Valve
-
Siphon Valve
Pregunta 19
Pregunta
The purpose of a thermocouple on a discharge reciprocating compressor is.....
Respuesta
-
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
Pregunta 20
Pregunta
How to control surge in a centrifugal compressor?
Respuesta
-
Variable Vane adjustment
-
Adjust suction pressure
-
Adjust discharge pressure
-
Adjusting the recirculating bypass control valve.
Pregunta 21
Pregunta
What is a bypass valve used for in a reciprocating compressor?
Respuesta
-
Load control
-
Speed control
-
Pressure control
-
Protection
Pregunta 22
Pregunta
How to prevent liquid spillover into the compressor?
Respuesta
-
Coalescing filter
-
Desiccant and coalescing filter
-
High level dump with high level shut down control
-
High/Low level control
Pregunta 23
Pregunta
What is not part of an SIS?
Respuesta
-
Process Hazop
-
Field Devices
-
Logic Calculation (PLC/DCS)
-
Fine Control Element
Pregunta 24
Pregunta
What is true of an SIS system?
Respuesta
-
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.
Pregunta 25
Pregunta
What SIL Level is 10,000 to 1000?
Respuesta
-
SIL1
-
SIL2
-
SIL3
-
SIL4
Pregunta 26
Pregunta
Why would PST (Partial Stroke Testing) be selected on SIS Control Valves?
Respuesta
-
To force the valve open.
-
To force the valve closed.
-
To reduce the SIL level.
-
To verify the SIF.
Pregunta 27
Pregunta
What is baud?
Respuesta
-
Bits per second.
-
Number of discrete signal changes per second.
-
Digital characters per second.
-
Bad Ass Under Dog.
Pregunta 28
Pregunta
What is a characteristic of RS-232 Protocol?
Respuesta
-
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
Pregunta 29
Pregunta
What kind of access method is used by Modbus?
Respuesta
-
Token Ring
-
Token Bus
-
Master / Slave
-
CMSA / CD
Pregunta 30
Pregunta
A modem using digital modulation....
Respuesta
-
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.
Pregunta 31
Pregunta
Digital data can be sent over a PSTN phone network using...
Respuesta
-
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.
Pregunta 32
Pregunta
A bell 202 modem uses this on its main channel
Respuesta
-
Amplitude modulation.
-
Frequency Shift Keying
-
Phase Shift Keying
-
HART
Pregunta 33
Pregunta
What topology does HART use when digital signaling?
Respuesta
-
Star
-
Ring
-
Multidrop Bus
-
Point to Point
Pregunta 34
Pregunta
How many characters per second are transmitted when a serial communication port has the following configuration 7, N, 1, 2400 Baud?
Respuesta
-
230 CPS
-
266.7 CPS
-
333.3 CPS
-
1200 CPS
Pregunta 35
Pregunta
What is not part of the EM spectrum?
Respuesta
-
Infared
-
Visible
-
Sound
-
Microwaves
Pregunta 36
Pregunta
What is a characteristics of UHF?
Respuesta
-
Uses Line of Sight
-
Follows the curvature of the earth.
-
is good for long distances.
-
Good for mountainous region.
Pregunta 37
Pregunta
What kind of signal does the diagram represent?
Respuesta
-
AM
-
FSK
-
PSK
-
RS-232
Pregunta 38
Pregunta
What is the processor in a SCADA RTU responsible for?
Respuesta
-
Process Control
-
Trending
-
Error Calculations
-
Process feedback
Pregunta 39
Pregunta
What equipment is found at a SCADA host site?
Respuesta
-
Printer
-
Flow Computer
-
Control Valve
-
None of the above
Pregunta 40
Pregunta
Which one of the below requires SCADA?
Respuesta
-
Small Gas Plant
-
Beer Factory
-
Pipe Line
-
Pump Shack
Pregunta 41
Pregunta
Why do we need SCADA systems?
Respuesta
-
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.
Pregunta 42
Pregunta
Custody transfer when referring to a SCADA system represents what being traded?
Respuesta
-
Data Values
-
Accounting Information
-
Commodities
-
D
Pregunta 43
Pregunta
What is needed for a PLC to function?
Respuesta
-
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.
Pregunta 44
Pregunta
What is the proper procedure for making changes to PLC programming?
Respuesta
-
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.
Pregunta 45
Pregunta
Where are configuration and control programs stored in case of power failure?
Respuesta
-
PC
-
CD
-
EEPROM
-
RAM
Pregunta 46
Pregunta
What would FBD be used for?
Respuesta
-
Analog Control
-
Analog and/or Discrete control
-
Slow Processes
-
Fast Processes
Pregunta 47
Pregunta
A process needing analog control and discrete control would use what langauges
Respuesta
-
Ladder/FBD
-
SFC
-
Structured Text
-
C/C++
Pregunta 48
Pregunta
What language is best for batch control?
Respuesta
-
Ladder Logic
-
Sequential Function Chart
-
Instruction List
-
Function Blocks
Pregunta 49
Pregunta
What is not an IEEE 61120 language?
Respuesta
-
Function Block Diagrams
-
Machine List
-
Ladder Diagram
-
Structured Text
Pregunta 50
Pregunta
Two PLC's are conncted using RS-232, What topology is this?
Respuesta
-
Master / Slave
-
Star
-
Peer to Peer
-
Bus
Pregunta 51
Pregunta
What should be considered when updating the PLC Software Version?
Respuesta
-
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.
Pregunta 52
Pregunta
What FB Value should be connected to the PV of this function block?
Respuesta
-
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
Pregunta 53
Pregunta
What is the proper procedure to repair broken equipment?
Respuesta
-
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.
Pregunta 54
Pregunta
When forcing logic in a PLC what precautions need to be taken?
Respuesta
-
Save data first.
-
Secure all processes and protect personnel.
-
The loop is set to manual.
-
PLC has backup power.
Pregunta 55
Pregunta
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 + _____
Respuesta
-
Var1
-
Var2 Only
-
Var2 and 6
-
Var3
Pregunta 56
Pregunta
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?
Respuesta
-
A
-
B
-
C
-
D
Pregunta 57
Pregunta
When installing several devices that are too far away from the PLC, what must you also install?
Respuesta
-
Signal Conditioning System
-
New Controller
-
Remote I/O
-
Extra Cabling
Pregunta 58
Pregunta
When there is a need to trend values what component of a DCS needs to be added?
Respuesta
-
RAM
-
Extra memory
-
A data historian
-
A register
Pregunta 59
Pregunta
Why do we use redundancy in a DCS System?
Respuesta
-
To raise production
-
To lower costs
-
For better reliability
-
To allow more streamlined control
Pregunta 60
Pregunta
What happens in a DCS with redundant controllers if the main controller fails?
Respuesta
-
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.
Pregunta 61
Pregunta
Why do we use redundant cabling in DCS systems?
Respuesta
-
For two way communication.
-
For duplex communication.
-
In case one cable breaks.
-
For better transmission quality.
Pregunta 62
Pregunta
What is the disadvantage of using the auto tune feature in the DCS?
Respuesta
-
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.
Pregunta 63
Pregunta
When using trending in a DCS for loop tuning what feature is most important?
Respuesta
-
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.
Pregunta 64
Pregunta
What's not a good reason to upgrade software versions of the DCS?
Respuesta
-
To fix software glitches.
-
To have the new version.
-
To take advantage of new features.
-
To fix security issues.
Pregunta 65
Pregunta
Why do we have alarm management software?
Respuesta
-
To combat color blindness
-
To "dummy" proof alarms.
-
To prioritize alarms.
-
To get rid of un-wanted alarms.
Pregunta 66
Pregunta
Prioritize these alarms from Most to Least critical:
1. Data Communication is broken.
2. PV out of range on Transmitter.
3. Gas Leak.
Respuesta
-
2, 3, 1
-
1, 2, 3
-
3, 1, 2
-
2, 1, 3
Pregunta 67
Pregunta
What are the main parts of a DCS?
Respuesta
-
Control Database, HMI, and Controller
-
HMI and Controller
-
Software, Control Database, HMI, and Controller
-
Control Database, HMI, Rack, and Controller
Pregunta 68
Pregunta
What is the procedure for making changes to to a DCS configuration?
Respuesta
-
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.
Pregunta 69
Pregunta
What access level must you have to make changes to a DCS configuration?
Respuesta
-
Operator
-
Administrator
-
Manager
-
Technician
Pregunta 70
Pregunta
What are the main components of a VSD?
Respuesta
-
Signal Booster, Filter, Inverter
-
Filter, Converter, Inverter
-
Rectifier, Filter, Converter
-
Rectifier, Filter, Inverter
Pregunta 71
Pregunta
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?
Respuesta
-
2000 rpm
-
2250 rpm
-
2550 rpm
-
3000 rpm
Pregunta 72
Pregunta
What is not the purpose of an HMI?
Respuesta
-
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.
Pregunta 73
Pregunta
What type of program must be used to develop an HMI for use on a monitor?
Respuesta
-
Runtime software
-
Program or configuration software
-
MS Paint
-
Graphix based software
Pregunta 74
Pregunta
How do you connect an HMI to a different manufacturer's controller?
Respuesta
-
Router
-
I/O Servers
-
Device Drivers
-
Modem
Pregunta 75
Pregunta
What is pre-cut column used for?
Respuesta
-
To separate carrier gas from sample.
-
To separate carrier gas from oxygen
-
To alter the column paths
-
To remove impurities before main column
Pregunta 76
Pregunta
How is concentration determined from a chromatogram?
Respuesta
-
Peak height
-
Peak area
-
Elution Time
-
None of the above.
Pregunta 77
Pregunta
What will happen to an IR Analyzer detector as IR passes through the sample?
Respuesta
-
Temperature decrease from the sample absorbing IR.
-
Temperature increase.
-
Pressure Increase.
-
Pressure Decrease.
Pregunta 78
Pregunta
Describe the function of a Peltier Cooling Device.
Respuesta
-
RTD attached to power supply.
-
Thermistor attached to power supply.
-
Heater connected to power supply.
-
Thermocouple attached to power supply.
Pregunta 79
Pregunta
What is the difference between a GC and an LC?
Respuesta
-
Mobile Phase
-
Stationary Phase
-
Column
-
None of the above.
Pregunta 80
Pregunta
Florescence is what kind of analysis
Respuesta
-
Absorbance
-
Transmittance
-
Secondary Emissions.
-
Reflection
Pregunta 81
Pregunta
NO + O3 -> NO2 and infared radiation is what kind of reaction?
Respuesta
-
Chemiluminescence
-
Bioluminescence
-
Chemical
-
Ionic
Pregunta 82
Pregunta
How to measure total oxides of Nitrogen?
Respuesta
-
Multiply Nitrogen by detector response.
-
Catalytic conversion of all NOx to NO.
-
Change detector to measure different types of NOx.
-
None of the above.
Pregunta 83
Pregunta
The chopper in a combined beam IR analyzer does what?
Respuesta
-
Alternates IR to the sample and references.
-
Simultaneously blocks all IR into the detector.
-
Reflects IR into the reference.
-
Reflects IR into the sample.
Pregunta 84
Pregunta
What does a Mass Spectrometer separate components into and measure?
Respuesta
-
Ions according to their mass to charge ratio.
-
Molecules according to size.
-
Ions according to mass.
-
Ions according to charge.
Pregunta 85
Pregunta
Alberta workplace hazardous protection values for H2S and CO are only given in 1 and 24 hour exposure limits. Why?
Respuesta
-
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.
Pregunta 86
Pregunta
What accuracy of analyzers must be used to monitor ambient concentrations of SO2, NO, H2S?
Respuesta
-
PPM and PPB detectors
-
% Concentration
-
PPT Analyzer
-
All are acceptable.
Pregunta 87
Pregunta
When performing maintenance planning what reduces downtime the most?
Respuesta
-
Preventive / Reactive
-
Preventive / Predictive
-
Reactive / Predictive
-
Reactive / Preventative
Pregunta 88
Pregunta
When stocking parts what needs to be considered?
Respuesta
-
Cost of inventory
-
Critical nature of systems
-
Time of delivery of spare parts.
-
Time to replace stock
Pregunta 89
Pregunta
What are KPI's used for?
Respuesta
-
To decrease production
-
To decrease safety
-
To decrease down time
-
To increase cost to companies
Pregunta 90
Pregunta
In order to sign off on a specific task what must the apprentice do?
Respuesta
-
Demonstrate competency in the task.
-
Observe the task being done.
-
Take an exam and pass.
-
Have an authorized journeyman sign off.
Pregunta 91
Pregunta
Who makes the trade outline?
Respuesta
-
Local apprenticeship office.
-
Provincial Apprenticeship Commitee
-
AIT
-
Industry
Pregunta 92
Pregunta
What does a red seal do?
Respuesta
-
Allows inter-provincial mobility.
-
Allows global mobility
-
Gives a pay increase.
-
Provides differentiation between a journeyman and a continuing education applicant.
Pregunta 93
Pregunta
A sample loop replaces?
Respuesta
-
Sample Port
-
Fast Loop
-
Sample System
-
All of the above
Pregunta 94
Pregunta
What light source is required for chemiluminescence?
Respuesta
-
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.
Pregunta 95
Pregunta
What are two similar types of process?
Respuesta
-
Liquid Flow and Level
-
Liquid Level and Pressure
-
Gas and Liquid Level
-
Gas and Liquid Temperature
Pregunta 96
Pregunta
A wavelength passed through a prism is an example of?
Respuesta
-
A rainbow
-
Refraction
-
Detraction
-
Reflection
Pregunta 97
Pregunta
What are Modicon addresses?
Respuesta
-
Channels
-
IP
-
Frequency
-
Bits
Pregunta 98
Pregunta
How many slaves are available on Modbus?
Respuesta
-
1-247
-
1-123
-
1
-
10-247
Pregunta 99
Pregunta
An Allen Bradley PLC is addressed by?
Respuesta
-
Rack, Group, Terminal
-
Card, Tag, Terminal
-
Rack, Card, Controller
-
Terminal, Rack, Group
Pregunta 100
Pregunta
An Allen Bradley PLC's Input terminal LED shows?
Respuesta
-
Input Voltage
-
Output Voltage
-
Bits
-
Reading in %
Pregunta 101
Pregunta
MOORE controller symbol means what?
Respuesta
-
Numeric Value
-
Process Controller
-
Software Controller
-
Requires special training to operate
Pregunta 102
Pregunta
Data communication going only going 1 way to a remote station to a local station, What type of communication does this represent?
Respuesta
-
TCP/IP
-
Simplex
-
Duplex
-
Bus
Pregunta 103
Pregunta
A P only controller offset is reduced by?
Respuesta
-
A decrease in proportional band or an increase in gain.
-
Manual Reset
-
Integral
-
Derivative
Pregunta 104
Pregunta
In an Allen Bradley PLC how large is a T timer?
Respuesta
-
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
Pregunta 105
Pregunta
When SCADA is using Satellite communication it is called?
Respuesta
-
Geo-oriented
-
RTU
-
Geosynchronous
-
Real time
Pregunta 106
Pregunta
What are the frames or boundaries of a Synchronous data stream?
Respuesta
-
Preamble and Postamble
-
Precomm and Postcomm
-
Buffer and Render
-
Leader and Tail
Pregunta 107
Pregunta
What is the first bit after the start bit on Asynchronous communication, RS232?
Respuesta
-
Most Significant Bit (MSB)
-
Least Significant Bit (LSB)
-
Mean Significant Bit (MSB)
-
Lead Significant Bit (LSB)
Pregunta 108
Respuesta
-
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
Pregunta 109
Pregunta
Where is the rectifying section?
Respuesta
-
Above the feed in
-
Under the feed in
-
Before the feed outlet
-
The base of the distillation tower.
Pregunta 110
Pregunta
What is reflux ratio?
Respuesta
-
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.
Pregunta 111
Pregunta
What is ¼ amplitude decay?
Respuesta
-
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.
Pregunta 112
Pregunta
What is a self regulating process?
Respuesta
-
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.
Pregunta 113
Pregunta
What is the most difficult process aspect to control?
Respuesta
-
Dead Time (Lag)
-
Error
-
Upsets
-
Measurement
Pregunta 114
Pregunta
What does a control valve control?
Respuesta
-
The manipulated variable
-
The measured variable
-
Flow
-
Pressure
Pregunta 115
Pregunta
What is represented by the slope of a reaction curve?
Respuesta
-
The response or reaction rate
-
Error
-
Dead Time
-
Controller Output
Pregunta 116
Pregunta
What is the definition of Shrink in a boiler system?
Respuesta
-
Decrease in steam flow
-
Increase in steam flow
-
Pressure Increase
-
Temperature Loss
Pregunta 117
Pregunta
What government agency sets safety standards?
Respuesta
-
OH&S
-
CSA
-
ISO
-
FM
Pregunta 118
Pregunta
What happens if the differential pressure (∆P) increases in a distillation tower?
Respuesta
-
Trays will flood
-
Tower will empty
-
Tower is plugged
-
Nothing
Pregunta 119
Pregunta
What causes dry trays in a distillation tower?
Respuesta
-
Too high of a temperature
-
Plugging at the inlet
-
A high vapor rate signaled by a decrease of the Differential Pressure
-
Critical failure
Pregunta 120
Pregunta
A UV analyzer measures?
Respuesta
-
SO2
-
CO2
-
NOx
-
UV
Pregunta 121
Pregunta
What does OSI (Open System Interconnection) do?
Respuesta
-
Provides manufacturer's with strict guidelines for communication
-
Networks all communications
-
Nothing
-
Converts all signals to one standard langauge
Pregunta 122
Pregunta
What is a GLC?
Respuesta
-
Gas Laser Chromatograph.
-
Gas Liquid Chromatograph with Liquid sensor.
-
Gas Chromatograph with a Liquid column. (2 Phases)
-
A Rapper.
Pregunta 123
Pregunta
Selective control is used for?
Respuesta
-
Protection of equipment according to safety standards
-
To reduce error in rapid processes
-
To stop reset windup
-
For cascade systems with multiple slaves
Pregunta 124
Pregunta
What is the solid packing in a Gas Chromatograph is used for?
Respuesta
-
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
Pregunta 125
Pregunta
A sample probe should be placed where in the pipe?
Respuesta
-
Process dependent
-
Away from the wall at the center of the pipe
-
At the top of the pipe
-
At the bottom of the pipe
Pregunta 126
Pregunta
What language does a SFC (Sequential Function Chart) use?
Respuesta
-
Graphical
-
Text (Word)
-
Function Block
-
HTML
Pregunta 127
Pregunta
C programming uses?
Respuesta
-
Assembler
-
Compiler
-
Builder
-
Programmer
Pregunta 128
Pregunta
How does an Allen Bradley PLC communicate to different modules?
Respuesta
-
Over the chassis back plate or back plane.
-
Through SCADA
-
RSLogix
-
Ethernet
Pregunta 129
Pregunta
Dirty windows block?
Respuesta
-
IR
-
UV
-
Microwaves
-
Heat
Pregunta 130
Pregunta
What type of communication does Baseband use?
Respuesta
-
Digital
-
Analog
-
Serial
-
Virtual
Pregunta 131
Pregunta
Cross limiting fuel control is used for what?
Respuesta
-
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
Pregunta 132
Pregunta
Where does signal from a steam signal controller boiler on a multi capacity system go?
Respuesta
-
Goes to the boiler master
-
Goes to the plant master
-
Goes to the PLC
-
Goes to the DCS
Pregunta 133
Pregunta
How do you tune a hi-capacity tank?
Respuesta
-
Reaction curve method in manual
-
Auto-tune
-
Reaction curve method
-
Reverse control
Pregunta 134
Pregunta
What is the definition of Ratio?
Respuesta
-
Controlled variable to the measured variable
-
PV to the response
-
Measured signal to the controller output
-
None of the above
Pregunta 135
Pregunta
Use R=Ro(SPANw)/SPANc to solve ratio question?
Ro = 5
SPANw = 350
SPANc = 1400
Respuesta
-
.75
-
1.25
-
2.50
-
5
Pregunta 136
Pregunta
What is a valve positioner equivalent to?
Respuesta
-
Cascade Control
-
Signal Booster
-
I/P
-
SMART controller
Pregunta 137
Pregunta
Benefits of cascade control?
Respuesta
-
Removes disturbances in the manipulated variable
-
Removes disturbances in the controlled variable
-
Redundancy
-
All of the above
Pregunta 138
Pregunta
Typical flow controller will have what settings?
Respuesta
-
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
Pregunta 139
Pregunta
A PID controller will work best on what type of process?
Respuesta
-
Non-noisy processes (Temperature)
-
Noisy Processes (Flow)
-
Stable Processes (Level)
-
Fast Processes (Pressure)
Pregunta 140
Pregunta
What is the difference in types of mass spectrometers?
Respuesta
-
Analysis time
-
How they separate ions
-
Gas or Liquid Phase
-
Source method
Pregunta 141
Pregunta
What does the manifold do in a Mass Spectrometer?
Respuesta
-
Separates components
-
Filters out dangerous components
-
Protects the unit from High Pressures and Temperatures
-
Provides different process connections
Pregunta 142
Pregunta
What does the length of a cell represent?
Respuesta
-
Type of component to be measured
-
Amount of concentration that can be measured
-
Accuracy
-
Manufacturer
Pregunta 143
Pregunta
Modbus communicates in?
Respuesta
-
Serial
-
Digital
-
ASCII and RTU data formats
-
Bus
Pregunta 144
Pregunta
Differential Signal communication is?
Respuesta
-
Variable
-
Balanced
-
Active
-
A Two Emitter system
Pregunta 145
Pregunta
Parallel fuel and air does not?
Respuesta
-
Compensate for air disturbance
-
Compensate for crackling
-
Function without ratio control
-
Optimize fuel
Pregunta 146
Pregunta
What type of boiler control uses large steam capacity in relation to it’s drum capacity?
Respuesta
-
3 Element
-
Dual Element
-
Double Drum
-
Tandem Boilers
Pregunta 147
Pregunta
What is the Hayes command to a modem?
Respuesta
-
AT
-
TA
-
DF
-
RE
Pregunta 148
Pregunta
Output tracking is?
Respuesta
-
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
Pregunta 149
Pregunta
In Feed forward control what must occur?
Respuesta
-
Continuous computing
-
Output tracking
-
Cascade control
-
Redundant controllers
Pregunta 150
Pregunta
PI Controller with a prolonged error is said to be?
Respuesta
-
Saturated or has reached saturation
-
Integral failure
-
Improper Manual Reset
-
Any combination of the above
Pregunta 151
Pregunta
Mass spectrometers operate on?
Respuesta
-
High temperature and high vacuum
-
Low temperature and low pressure
-
High temperature and low vacuum
-
Low temperature and high pressure
Pregunta 152
Pregunta
Liquid level or gas pressure, which is noisier?
Respuesta
-
Liquid level, non-compressible
-
Gas pressure, high energy
-
Both are noisy
-
Both are not noisy
Pregunta 153
Pregunta
What is the qualitative output from a Chromatograph?
Respuesta
-
Retention Time
-
Elution Time
-
Peak Height
-
Peak Area
Pregunta 154
Pregunta
What is the qualitative output from a Mass Spectrometer?
Respuesta
-
Frequency
-
Charge
-
Time of flight
-
Flow Rate
Pregunta 155
Pregunta
What is the qualitative output from a Gas Chromatograph?
Respuesta
-
Elution Time
-
Retention Time
-
Peak Height
-
Peak Area
Pregunta 156
Pregunta
A permeation tube is filled with?
Respuesta
-
Sample under pressure
-
Air
-
Inert Gas
-
Nitrogen
Pregunta 157
Pregunta
What does precut do?
Respuesta
-
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
Pregunta 158
Pregunta
Where is PID executed in a DCS?
Respuesta
-
Local microprocessor card
-
Control Board
-
RAM
-
All of the above
Pregunta 159
Pregunta
Allen Bradley looks at what when considering a function?
Respuesta
-
A table
-
A matrix
-
An index
-
The final value
Pregunta 160
Pregunta
Self regulating process with a step change give what output?
Respuesta
-
First order curve
-
Self integrating
-
First order + Dead time
-
None of the answers are correct
Pregunta 161
Pregunta
What is the range given -20 to 50°C?
Respuesta
-
70
-
30
-
50
-
Depends on the sensor
Pregunta 162
Pregunta
What is the problem if reset windup is present in a non-select controller in a selective system?
Respuesta
-
The wrong tieback
-
The wrong controller is the Master
-
Too much integral applied on the slave
-
Too much derivative applied on the Master
Pregunta 163
Pregunta
What does the “Operating license” in analyzers tell you?
Respuesta
-
Parameters to be measured
-
Certification completed
-
Certified technicians for maintenance
-
Nothing
Pregunta 164
Pregunta
Where can you use a median selector?
Respuesta
-
In redundant instrumentation and auctioneering
-
SIL applications only
-
Cascade control
-
Complex level with multiple measurements
Pregunta 165
Pregunta
Where is the highest gain on a square root extractor?
Respuesta
-
At the lowest input
-
At the highest input
-
Outside the calibrated range
-
At 0
Pregunta 166
Pregunta
In a cascade flow loop the 2nd loop oscillates when?
Respuesta
-
High Flow
-
Low Flow
-
High Pressure
-
Low Pressure
Pregunta 167
Pregunta
If step change is introduced into a single capacity process, what is the output?
Respuesta
-
Exponential
-
Logarithmic
-
Linear
-
Equal %
Pregunta 168
Pregunta
What does a positive matrix have?
Respuesta
-
Either 3 positives and 1 negative or 3 negatives and 1 positive
-
2 positives and 2 negatives
-
All positives
-
1 Negative
Pregunta 169
Pregunta
What precautions do you take with a UV source?
Respuesta
-
Life span of a UV source is short
-
Sensor contamination from external sources
-
Poisoning from external light
-
Flammable
Pregunta 170
Pregunta
What does an IR chopper do?
Respuesta
-
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
Pregunta 171
Pregunta
Fluorescence analyzer does what?
Respuesta
-
Ambient SO2
-
Ambient NOx
-
Various gases
-
LEL & UEL
Pregunta 172
Pregunta
With a 9 psi signal and a ratio of 1.4, what is the output?
Respuesta
-
11.4
-
12.6
-
8.4
-
14
Pregunta 173
Pregunta
Where are FCO and Function Blocks stored in a MOORE controller?
Respuesta
-
EPROM
-
EEPROM
-
Microprocessor
-
Flash memory
Pregunta 174
Pregunta
How do you de-couple?
Respuesta
-
Remove multiple controller interaction
-
Open the loop
-
Eliminate the Master measured variable
-
Add an additional controller
Pregunta 175
Pregunta
What is ratio control?
Respuesta
-
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
Pregunta 176
Pregunta
What is the difference between SCADA and DAS?
Respuesta
-
DAS is information collection only
-
SCADA requires a satellite connection
-
DAS is limited by 2 GB of memory
-
SCADA requires an external power supply
Pregunta 177
Pregunta
What is a HART transmitter operating in when connected on a multidrop?
Respuesta
-
Digital
-
Analog
-
Control
-
Reader
Pregunta 178
Pregunta
Exception reporting does what?
Respuesta
-
List non-compliant equipment
-
Reduces communication requirements
-
Explains changes and modifications to the plant layout
-
None of the above
Pregunta 179
Pregunta
What are the serial ports called or alternate names for DTE’s?
Respuesta
-
Com 1, 2, and 3
-
Com 4, 5, and 6
-
Com 1, 5, and 6
-
Com 2, 3, and 6
Pregunta 180
Pregunta
What is the factor of Dead time?
Respuesta
-
4X
-
3X
-
2X
-
5X
Pregunta 181
Pregunta
What is the problem or disadvantage with P-Only control?
Respuesta
-
Error between SP and PV always present. (Offset)
-
No automatic function
-
Error is not consistent
-
Slow reaction time
Pregunta 182
Pregunta
What is the purpose of Derivative?
Respuesta
-
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
Pregunta 183
Pregunta
A stationary liquid column in a GLC does what?
Respuesta
-
Both absorb and adsorb
-
Separates liquid components
-
Allows the process to reach the correct pressure and temperature for analysis
-
All of the above
Pregunta 184
Pregunta
What is effective dead time?
Respuesta
-
Actual Dead Time
-
Theoretical Dead Time
-
Calculated Dead Time
-
dT
Pregunta 185
Pregunta
What is the definition of feedback control?
Respuesta
-
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
Pregunta 186
Pregunta
How does an Allen Bradley PLC read?
Respuesta
-
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
Pregunta 187
Pregunta
What is a Yagi antenna used for?
Respuesta
-
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
Pregunta 188
Pregunta
What is QAD gain?
Respuesta
-
0.5
-
1
-
3
-
.75
Pregunta 189
Pregunta
What is the QAD damping factor?
Respuesta
-
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)
Pregunta 190
Pregunta
What is the QAD decay ratio?
Respuesta
-
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)
Pregunta 191
Pregunta
What are the two feed forward process measurements required?
Respuesta
-
Controlled variable and disturbances
-
Measured signal and error
-
Dead time and offset
-
Pressure & Temperature
Pregunta 192
Pregunta
How is a smart transmitter connected to a DCS?
Respuesta
-
Through the Field bus
-
Through the Profi bus
-
HART
-
Modbus
Pregunta 193
Pregunta
Controller configurations are uploaded to?
Respuesta
-
Controller to PC
-
Controller to PLC
-
Controller to DCS
-
Controller to SCADA
Pregunta 194
Pregunta
What is a precaution when dealing with UV radiation?
Respuesta
-
Look at it through a filter
-
Potential combustion
-
Radiation
-
Reduces oxygen present
Pregunta 195
Pregunta
What type of detectors do Gas chromatographs normally use?
Respuesta
-
FID (Flame ionization detector)
-
PID (Photo ionization detector)
-
Wheatestone bridge
-
Electron sensor
Pregunta 196
Pregunta
What state would the secondary flow loop in a cascade loop be?
Respuesta
-
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
Pregunta 197
Pregunta
Tuning using the ultimate gain method the integral setting?
Respuesta
-
TN
-
NT
-
Z-N
-
OP
Pregunta 198
Pregunta
What signifies High Level programming langauges?
Respuesta
-
English words (Like “C”)
-
Multiple outputs
-
Live fucntioning
-
Configurable systems
Pregunta 199
Pregunta
Attenuation methods in fiber optics?
Respuesta
-
Scattering, absorption, bending and connection
-
Poisoning, absorption, bending and connection
-
Scattering, adsorption, bending and connection
-
Absorption, bending and connection
Pregunta 200
Pregunta
Fuzzification is ...
Respuesta
-
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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