AALSO Life Support Practice Exam
Questions and Answers
A positive displacement pump that utilizes a set of rollers that compress and rotate
across an elastomeric tube to pump a fluid is a:
a) Flexible impeller pump
b) Diaphragm pump
c) Centrifugal pump
d) Peristaltic pump - Correct Answers -d) Peristaltic pump
According to the diagram, which part of the centrifugal pump does the motor connect
to?
a) Pump casing
b) Impeller
c) Volute
d) Drive shaft flange - Correct Answers -d) Drive shaft flange
The effectiveness of disinfection of potentially pathogenic waterborne microorganisms
through the use of the ozone is influenced the most by which of these factors?
a) Temperature
b) Concentration
c) Salinity
d) pH - Correct Answers -b) Concentration
What does LOTO stand for?
a) Lock out, tell operator
b) Leave open, take off
c) Lock out, tag out
d) Your retirement plan - Correct Answers -c) Lock out, tag out
The tank material, HDPE is also known as?
a) Hyper dense polyethylene
b) High density proethane
c) High density polyethylene
d) Hyper dense proethane - Correct Answers -c) High density polyethylene
, Which of the following life support system components could be categorized as
mechanical filtration?
a) Ultraviolet sterilizer
b) Ozone contact tank
c) Rotating drum filter
d) None of the above - Correct Answers -c) Rotating drum filter
Which of the following life supporting system components uses high flow rates and
higher pressures to mechanically filter water?
a) Ultraviolet sterilizer
b) Carbon filter
c) High pressure sand filter
d) None of the above - Correct Answers -c) High pressure sand filter
A ________ valve uses the guillotine action of a solid wall to control the flow of water:
a) Butterfly
b) Ball
c) Gate
d) Globe - Correct Answers -c) Gate
A globe valve uses ___________ to control the flow of water:
a) Wafer-like articulating disk
b) Guillotine action of a solid wall
c) Plug and baffle
d) Spherical articulating disk - Correct Answers -c) Plug and baffle
Which condition can decrease foam fractionator efficiency?
a) Consistent flow rate through the fractionator
b) Large disruptive bubbles in the reaction column
c) Uniform bubble size in the reaction column
d) Higher salinity (such as full strength seawater) - Correct Answers -b) Large disruptive
bubbles in the reaction column
Before entering a confined space, one should do all of the following EXCEPT:
a) Lock out/tag out all mechanical equipment
b) Ensure adequate ventilation
c) Test oxygen levels and dangerous gases
d) Securely tie a rope around one's waist to ensure recuse if necessary - Correct
Answers -c) Test oxygen levels and dangerous gases
Questions and Answers
A positive displacement pump that utilizes a set of rollers that compress and rotate
across an elastomeric tube to pump a fluid is a:
a) Flexible impeller pump
b) Diaphragm pump
c) Centrifugal pump
d) Peristaltic pump - Correct Answers -d) Peristaltic pump
According to the diagram, which part of the centrifugal pump does the motor connect
to?
a) Pump casing
b) Impeller
c) Volute
d) Drive shaft flange - Correct Answers -d) Drive shaft flange
The effectiveness of disinfection of potentially pathogenic waterborne microorganisms
through the use of the ozone is influenced the most by which of these factors?
a) Temperature
b) Concentration
c) Salinity
d) pH - Correct Answers -b) Concentration
What does LOTO stand for?
a) Lock out, tell operator
b) Leave open, take off
c) Lock out, tag out
d) Your retirement plan - Correct Answers -c) Lock out, tag out
The tank material, HDPE is also known as?
a) Hyper dense polyethylene
b) High density proethane
c) High density polyethylene
d) Hyper dense proethane - Correct Answers -c) High density polyethylene
, Which of the following life support system components could be categorized as
mechanical filtration?
a) Ultraviolet sterilizer
b) Ozone contact tank
c) Rotating drum filter
d) None of the above - Correct Answers -c) Rotating drum filter
Which of the following life supporting system components uses high flow rates and
higher pressures to mechanically filter water?
a) Ultraviolet sterilizer
b) Carbon filter
c) High pressure sand filter
d) None of the above - Correct Answers -c) High pressure sand filter
A ________ valve uses the guillotine action of a solid wall to control the flow of water:
a) Butterfly
b) Ball
c) Gate
d) Globe - Correct Answers -c) Gate
A globe valve uses ___________ to control the flow of water:
a) Wafer-like articulating disk
b) Guillotine action of a solid wall
c) Plug and baffle
d) Spherical articulating disk - Correct Answers -c) Plug and baffle
Which condition can decrease foam fractionator efficiency?
a) Consistent flow rate through the fractionator
b) Large disruptive bubbles in the reaction column
c) Uniform bubble size in the reaction column
d) Higher salinity (such as full strength seawater) - Correct Answers -b) Large disruptive
bubbles in the reaction column
Before entering a confined space, one should do all of the following EXCEPT:
a) Lock out/tag out all mechanical equipment
b) Ensure adequate ventilation
c) Test oxygen levels and dangerous gases
d) Securely tie a rope around one's waist to ensure recuse if necessary - Correct
Answers -c) Test oxygen levels and dangerous gases
