The visible cloud that exits a cooling tower during cool, damp weather is called a cooling tower:
A) Carryover. B) Tail. C) Drift. D) Plume.
[Ques. 2] Which type of space heater must be turned on and operating when the space temperature falls below freezing?
A) Steam space heaters B) Electric space heaters
C) Kerosene space heaters D) Gas space heaters
[Ques. 3] What type of flame is characteristic of incomplete combustion?
A) Blue flames B) White flames C) Purple flames D) Yellow flames
[Ques. 4] What type of compressors are most commonly used in rooftop packaged units?
A) Hermetic rotary and hermetic centrifugal compressors
B) Semihermetic scroll or semihermetic rotary compressors
C) Open-type centrifugal and open-type screw compressors
D) Hermetic reciprocating or hermetic scroll compressors
[Ques. 5] What is the purpose of cooling tower fill material?
A) Increases the rigidity of the cooling tower structure
B) Slows the falling water and increases the surface exposure for evaporation
C) Provides a growing surface for algae and plants that help clean the water
D) Filters out dirt and debris from the cooling tower water
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