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Instrumentation - Quiz
Contributed by: Fernandes
  • 1. What is the typical pressure range for a pneumatic loop transmitter?
A) 4-20mA
B) 10-50KPa / 5-20PSI
C) 0-100KPa / 0-30PSI
D) 20-100KPa / 3-15PSI
  • 2. Which of the following is considered an electrical signal type in industrial transmitters?
A) Pneumatic loop
B) Ethernet APL
C) 4-20mA
D) Foundation Fieldbus
  • 3. What is the primary characteristic of HART signalling?
A) High-voltage transmission
B) Mechanical displacement
C) Purely pneumatic
D) Data signalling often overlaid on a current loop
  • 4. Which protocol is categorized under data signalling?
A) Foundation Fieldbus
B) Pneumatic loop
C) 4-20mA
D) 3-15PSI
  • 5. Who stated in 1940 that the history of physical science is largely the history of instruments?
A) Floris Cohen
B) Davis Baird
C) W. A. Wildhack
D) Ralph Müller
  • 6. According to Ralph Müller, why do broad generalizations and theories in science stand or fall?
A) On the basis of accurate measurement
B) On the intelligence of the ancients
C) On modern man's superior mind
D) On the rejection of physical science
  • 7. What does Davis Baird attribute the major change of the 'fourth big scientific revolution' to?
A) The abandonment of natural world research
B) The development of scientific instrumentation
C) The evolution of human cognitive ability
D) The decline of classical wet-and-dry methods
  • 8. In what decade was the introduction of new instrumentation described as a 'scientific and technological revolution' in chemistry?
A) 1930s
B) 1950s
C) 1940s
D) 1960s
  • 9. Which methods were discarded following the introduction of new instrumentation in chemistry?
A) Digital monitoring methods
B) Gas chromatography methods
C) UV spectrophotometry methods
D) Classical wet-and-dry methods
  • 10. Who discussed the productive and destructive potential inherent in process control in 1954?
A) W. A. Wildhack
B) Floris Cohen
C) Ralph Müller
D) Davis Baird
  • 11. What does the 'instrumentation revolution' provide according to the text?
A) The end of scientific theory
B) A different texture of the world
C) A return to ancient measurement methods
D) A superior human mind
  • 12. Which technology is mentioned as being used to monitor water pollutants?
A) Gas chromatography
B) Pneumatic loops
C) Current loops
D) Manual titration
  • 13. Which signaling method is categorized as data signalling?
A) Pneumatic loop
B) 4-20mA
C) Profibus
D) 3-15PSI
  • 14. What is an example of an application for scientific instrumentation monitoring?
A) Mechanical pressure sensing
B) DDT monitoring
C) Pneumatic signal transmission
D) Manual structural chemistry
  • 15. Which of these is identified as a data signalling type in the provided text?
A) Ethernet APL
B) 3-15PSI
C) 100KPa
D) 4-20mA
  • 16. What is a primary requirement for automotive instrumentation in harsh environments?
A) It must be cheap and reliable
B) It must be manually calibrated daily
C) It must be strictly mechanical
D) It must be exclusively wireless
  • 17. What does an anti-skid braking system use to control brakes?
A) Voice command modules
B) Sensors
C) Optical lenses
D) Manual mechanical levers
  • 18. What function do early aircraft 'steam gauges' perform?
A) They convert air pressures into needle deflections
B) They calculate fuel efficiency
C) They display digital altitude readings
D) They provide satellite navigation
  • 19. What is the function of an aircraft transponder in air traffic control radar?
A) It measures the pilot's heart rate
B) It jams enemy radar signals
C) It transmits codes upon receiving a pulse
D) It generates weather maps
  • 20. What is the purpose of the IEEE-488 bus in laboratory instrumentation?
A) To heat laboratory chemicals
B) To allow a computer to control test equipment
C) To record audio data for experiments
D) To provide electricity to the laboratory
  • 21. Which of the following is considered a final control element?
A) Microprocessor
B) Sensor
C) Data logger
D) Control valve
  • 22. What is the primary goal of instrumentation engineers in industries like chemical plants?
A) Reducing the cost of raw materials
B) Designing new chemical compounds
C) Replacing all human workers with robots
D) Improving productivity, reliability, safety, optimization and stability
  • 23. What device is used by astronomers to minimize air turbulence within a telescope?
A) Magnetic stabilization motors
B) Techniques to minimize temperature gradients
C) Air pressure gauges
D) Active cooling fans
  • 24. What is the role of an instrumentation technologist, technician, or mechanic?
A) Selling hardware to industrial plants
B) Writing complex control algorithms
C) Managing the marketing of instruments
D) Troubleshooting, repairing and maintaining systems
  • 25. Which of the following is an example of an automotive caution display?
A) Transmission fluid temperature
B) Current engine RPM
C) Tire pressure low
D) Cruise control speed
  • 26. How is an aircraft's map location determined by radar?
A) Inertial navigation only
B) Sensed antenna direction and sensed time delay
C) Transponder signal strength
D) Satellite voice commands
  • 27. What is the function of cruise control in an automobile?
A) It adjusts seat belt tension
B) It affects throttle position
C) It manages airbag deployment
D) It controls tire pressure
  • 28. What determines the selection of appropriate sensors for an instrumentation engineer?
A) The manufacturing company's location
B) Size, weight, cost, reliability, accuracy, and longevity
C) The color and aesthetic design
D) The popularity of the sensor brand
  • 29. What component in a mechanical thermostat senses the temperature?
A) A mercury switch
B) A pressure sensor
C) A needle
D) A bi-metallic strip
  • 30. What device activates the furnace in a mechanical thermostat?
A) A bi-metallic strip
B) A solenoid valve
C) A mercury switch
D) A cooling system
  • 31. How does a refrigerator maintain a constant temperature?
A) By actuating the cooling system
B) By using a mercury switch
C) By turning on an internal fan
D) By monitoring the door switch
  • 32. What triggers an automatic ice machine to stop making ice?
A) A float valve
B) A timer
C) A temperature sensor
D) A limit switch
  • 33. Where is the sensor bulb located in a non-electronic gas oven?
A) Within the main chamber
B) On the exterior of the oven
C) Inside the gas burner
D) Near the gas control knob
  • 34. How do electric ovens distribute heat or cool the chamber in advanced models?
A) By adjusting the heating element power
B) By opening a steam vent
C) By changing the thermostat setting
D) By actuating fans
  • 35. What component in a toilet acts as a water level sensor?
A) A float
B) A bi-metallic strip
C) A limit switch
D) A valve
  • 36. In a home security system, what is an inherent part of the design?
A) Water management
B) Communication
C) Temperature regulation
D) Gas monitoring
  • 37. What was the primary disadvantage of early control panels located locally to the process plant?
A) Excessive cabling runs
B) High manpower requirements
C) Inability to use graphic displays
D) Lack of electronic processors
  • 38. What was a major limitation of centralized control rooms using discrete controller hardware?
A) Lack of manual control options
B) Inflexibility
C) High cost of electronic processors
D) Too much automation
  • 39. What technology enabled the transition from discrete controllers to computer-based algorithms?
A) Manual switchboards
B) Mechanical chart recorders
C) Pneumatic systems
D) Electronic processors
  • 40. Where are control processors located in a distributed control system?
A) Input/output racks distributed around the plant
B) Inside the sensors themselves
C) Only in the central control room
D) In remote off-site facilities
  • 41. What is a key benefit of networking control racks locally to the plant?
A) Reduced cabling runs
B) Increased number of manual controllers
C) Elimination of graphic displays
D) Higher power consumption
  • 42. What device was replaced by automatic event logging in modern systems?
A) Control processors
B) Input/output racks
C) Chart recorders
D) Graphic displays
  • 43. Which of the following is an advantage of DCS and SCADA systems mentioned in the text?
A) Reliance on hardware-based loop controllers
B) Increased manual oversight
C) Elimination of all network connections
D) Sophisticated alarm handling
  • 44. What was the most standard pneumatic signal level used during the years of control boards?
A) 4–20 mA.
B) 0–10 volts.
C) 10–50 psig.
D) 3–15 psig.
  • 45. Where were pneumatic controllers first mounted before they were moved to central rooms?
A) Underground.
B) In the field.
C) Inside the final control element.
D) On the ceiling.
  • 46. When were pneumatic transmitters and PID controllers introduced?
A) Early 1950s
B) Early 1930s
C) Late 1920s
D) Early 1970s
  • 47. What technology enabled wiring to replace pipes in instrumentation?
A) Pneumatic logic
B) Hydraulic automation
C) Transistor electronics
D) Mechanical linkages
  • 48. When was the transistor commercialized?
A) Early 1940s
B) Early 1930s
C) Mid-1950s
D) Late 1970s
  • 49. What is the standard that governs the compatibility of analog signals for electronic industrial instruments?
A) IEEE 488
B) ANSI/ISA S30
C) ANSI/ISA S50
D) ISO 9001
  • 50. When was the 4–20 mA signal range standardized as ANSI/ISA S50?
A) 1970s
B) 1980s
C) 1950s
D) 1960s
  • 51. What shift caused confusion before the standardization of the 4-20 mA signal?
A) The lack of available wire
B) The switch from analog to digital
C) Each instrument company introduced their own signal
D) The failure of pneumatic networks
  • 52. What is an example of a simple instrumentation device?
A) Multi-sensor component
B) Direct-reading thermometer
C) Refinery processing unit
D) Industrial control system
  • 53. Which of the following is considered an instrumentation device found in households?
A) Smoke detector
B) Television
C) Vacuum cleaner
D) Washing machine
  • 54. What is the suffix used for measuring devices in English?
A) -stat
B) -scope
C) -meter
D) -graph
  • 55. The suffix '-meter' has the same Greek origin as which unit of length?
A) Digit
B) Cubit
C) Stadium
D) Metron
  • 56. Which ancient civilization's water clock was found in the tomb of Amenhotep I?
A) Romans
B) Mesopotamians
C) Egyptians
D) Greeks
  • 57. In what year was the water clock found in the tomb of Amenhotep I roughly buried?
A) 1500 BCE
B) 270 BCE
C) 1663 BCE
D) 1000 BCE
  • 58. Who presented a design for a 'weather clock' to the Royal Society in 1663?
A) Christopher Wren
B) Isaac Newton
C) Robert Hooke
D) Amenhotep I
  • 59. What mechanism drove the pens in the 1663 weather clock design?
A) Hydraulics
B) Clockwork
C) Pneumatics
D) Electricity
  • 60. In a pneumatic chart recorder, what component displaces a pen?
A) Magnetic needle
B) Electronic sensor
C) Clockwork gear
D) Pressurized bellows
  • 61. Which parameter can be measured by instrumentation according to the text?
A) Texture
B) Taste
C) Volume of solid mass
D) Viscosity
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