AALSO LIFE SUPPORT PRACTICE EXAM QUESTIONS
& VERIFIED 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 - 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 - Answers - d) Drive shaft flange
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 - 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 - 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 - 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 - 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) - 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 -
Answers - c) Test oxygen levels and dangerous gases
Which of the following is a type of chemical filtration?
a) Degas tower
b) Carbon filter
c) Sand filter
d) Bag filter - Answers - b) Carbon filter
Channeling in a sand filter can be caused by
a) Improper backwashing frequency
& VERIFIED 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 - 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 - Answers - d) Drive shaft flange
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 - 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 - 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 - 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 - 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) - 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 -
Answers - c) Test oxygen levels and dangerous gases
Which of the following is a type of chemical filtration?
a) Degas tower
b) Carbon filter
c) Sand filter
d) Bag filter - Answers - b) Carbon filter
Channeling in a sand filter can be caused by
a) Improper backwashing frequency
