Question 1

What is the most common pressure measurement found in the US process industry?

Accepted Answer

A)  Differential pressure (psid) 
B)  Pounds per square inch (psi) 
C)  Inches of mercury (inHg) 
D)  Pounds per square inch absolute (psia) 
A)  Differential pressure (psid) 
B)  Pounds per square inch (psi) 
C)  Inches of mercury (inHg) 
D)  Pounds per square inch absolute (psia) B

Question 2

What type of control element can only be on or off?

Accepted Answer

A)  Discrete 
B)  Modulated 
C)  Valve control 
D)  Continuous 
A)  Discrete 
B)  Modulated 
C)  Valve control 
D)  Continuous A

Question 3

Which of the following improper operations will not cause equipment shutdown?

Accepted Answer

A)  Bypassing alarms 
B)  Failure to respond to an alarm 
C)  Partially opening a bypass valve around a working control valve 
D)  Turning off air supplies to control devices 
A)  Bypassing alarms 
B)  Failure to respond to an alarm 
C)  Partially opening a bypass valve around a working control valve 
D)  Turning off air supplies to control devices C

Question 4

Which of the following improper operations could most likely lead to hand and/or back injuries?

Accepted Answer

A)  Bypassing alarms 
B)  Failure to respond to an alarm 
C)  Adjusting leaking control valve packing 
D)  Attempting to open a motor controlled valve manually 
A)  Bypassing alarms 
B)  Failure to respond to an alarm 
C)  Adjusting leaking control valve packing 
D)  Attempting to open a motor controlled valve manually

Question 5

What component of process control instrumentation systems converts one instrumentation signal type into another type?

Accepted Answer

A)  Alarm 
B)  Control valve 
C)  Transducer 
D)  Valve positioner 
A)  Alarm 
B)  Control valve 
C)  Transducer 
D)  Valve positioner

Question 6

What is a measurement of the chemical or physical properties of a substance?

Accepted Answer

A)  Remote 
B)  Process variable 
C)  Analytical variable 
D)  Transducer 
A)  Remote 
B)  Process variable 
C)  Analytical variable 
D)  Transducer

Question 7

Which of the following is an element in direct contact with the process variable to be measured that senses a change and provides a signal to the transmitter?

Accepted Answer

A)  Sensor 
B)  Indicator 
C)  Recorder 
D)  Controller 
A)  Sensor 
B)  Indicator 
C)  Recorder 
D)  Controller

Question 8

What is a possible equipment impact of adjusting leaking control valve packing?

Accepted Answer

A)  Shutdown of process unit 
B)  Damage to motor 
C)  Valve may not open, close, or operate properly 
D)  Possible damage to downstream equipment due to higher flows and pressures 
A)  Shutdown of process unit 
B)  Damage to motor 
C)  Valve may not open, close, or operate properly 
D)  Possible damage to downstream equipment due to higher flows and pressures

Question 9

Which of the following is a temperature-sensing instrument?

Accepted Answer

A)  Thermistors 
B)  Manometers 
C)  Radar gauges 
D)  All of the above 
A)  Thermistors 
B)  Manometers 
C)  Radar gauges 
D)  All of the above

Question 10

Which of the following is the symbol for a hydraulic signal?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 11

Which of the following is the symbol for a pneumatic signal?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 12

What type of signal is a continuously variable representation of a process variable?

Accepted Answer

A)  Analog signal 
B)  Process signal 
C)  Digital signal 
D)  Automatic signal 
A)  Analog signal 
B)  Process signal 
C)  Digital signal 
D)  Automatic signal

Question 13

What uses air pressure, or a gas such as nitrogen, as a power source traveling through copper or stainless tubes?

Accepted Answer

A)  Analog signal 
B)  Digital signal 
C)  Hydraulic instruments 
D)  Pneumatic instruments 
A)  Analog signal 
B)  Digital signal 
C)  Hydraulic instruments 
D)  Pneumatic instruments

Question 14

Which of the following is an example of instrumentation that could be programmed to begin each step in the process upon completion of the previous one?

Accepted Answer

A)  Filter backwash 
B)  Dryer regeneration 
C)  Regeneration of a catalyst bed 
D)  All of the above 
A)  Filter backwash 
B)  Dryer regeneration 
C)  Regeneration of a catalyst bed 
D)  All of the above

Question 15

Which of the following is a symbol for remotely mounted instrumentation?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 16

What is a varying operational condition that is associated with a processing operation such as temperature, pressure, flow rate, level, and composition?

Accepted Answer

A)  Remote 
B)  Process variable 
C)  Analytical variable 
D)  Transducer 
A)  Remote 
B)  Process variable 
C)  Analytical variable 
D)  Transducer

Question 17

What common component of a DCS system is a data highway that connects the systems?

Accepted Answer

A)  Network 
B)  Workstations 
C)  Central processor 
D)  Supervisory computers 
A)  Network 
B)  Workstations 
C)  Central processor 
D)  Supervisory computers

Question 18

What is the difference between the set point and the current process variable value called?

Accepted Answer

A)  Error 
B)  Excess 
C)  Oversight 
D)  Set point 
A)  Error 
B)  Excess 
C)  Oversight 
D)  Set point

Question 19

Which of the following is a common flow-sensing element that creates a difference in pressure that can be measured by a D/P cell?

Accepted Answer

A)  Rotating piston 
B)  Oval gear 
C)  Orifice plates 
D)  Rotating vane meters 
A)  Rotating piston 
B)  Oval gear 
C)  Orifice plates 
D)  Rotating vane meters

Question 20

Which of the following is a symbol for panel mounted instrumentation?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Exam 27: Instrumentation

What is the most common pressure measurement found in the US process industry?

What type of control element can only be on or off?

Which of the following improper operations will not cause equipment shutdown?

Which of the following improper operations could most likely lead to hand and/or back injuries?

What component of process control instrumentation systems converts one instrumentation signal type into another type?

What is a measurement of the chemical or physical properties of a substance?

Which of the following is an element in direct contact with the process variable to be measured that senses a change and provides a signal to the transmitter?

What is a possible equipment impact of adjusting leaking control valve packing?

Which of the following is a temperature-sensing instrument?

Which of the following is the symbol for a hydraulic signal?

Which of the following is the symbol for a pneumatic signal?

What type of signal is a continuously variable representation of a process variable?

What uses air pressure, or a gas such as nitrogen, as a power source traveling through copper or stainless tubes?

Which of the following is an example of instrumentation that could be programmed to begin each step in the process upon completion of the previous one?

Which of the following is a symbol for remotely mounted instrumentation?

What is a varying operational condition that is associated with a processing operation such as temperature, pressure, flow rate, level, and composition?

What common component of a DCS system is a data highway that connects the systems?

What is the difference between the set point and the current process variable value called?

Which of the following is a common flow-sensing element that creates a difference in pressure that can be measured by a D/P cell?

Which of the following is a symbol for panel mounted instrumentation?

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