1
Refrigeration Operator Questions with
Answers (100% Correct Answers)
What is energy? Answer: the capacity of a body to do work
What is velocity? Answer: Rate of change of your position
What is acceleration? Answer: the rate of change of velocity
What is compression ratio? Answer: Discharge divided by suction
What is Mass? Answer: the quantity of matter that a body contains
What is force? Answer: Any action on a body who tends to change:
Size, Shape or State
What is kenetic energy? Answer: The ability of a body to do work due to its
motion
What is potential energy? Answer: the ability of a body to do work by virtue of
its position
Welding Answer: the joining of two or more pieced of metal by the application
of heat and sometimes pressure
Arc welding Answer: the process of fusion is obtained by heating with an
electric arc(s)
Braze welding Answer: a form of fusion welding where the base metal is not
fused but is heated bu an oxyacetylene torch
What is an oxidizing agent? Answer: A chemical substance that can supply to
react with hydrogent or with metals
What is a reducing agent? Answer: fuels in the combustion process where they
combine with an oxidizing agent
, 2
temperature Answer: a measure of the molecular activity occurring within a
substance
the four class letters, shapes and colour code of a fire extinguisher Answer:
Green triangle - A - ordinary combustibles
Red Square - B - Flammable Liquids
Blue Circle - C - Electrical
Yellow Star - D - combustible metals
The 7 most important physical elements of a refrigerant Answer: Density
Odour
leakage tendency
Miscibility
Moisture Reaction
Flammability
Toxicity
The 6 types of pipe joints Answer: Soldered
Screwed
Flanged
Flared
Brazed
Welded
the 7 units of measurements on a psychometric chart Answer: Dry bulb
temperature
Refrigeration Operator Questions with
Answers (100% Correct Answers)
What is energy? Answer: the capacity of a body to do work
What is velocity? Answer: Rate of change of your position
What is acceleration? Answer: the rate of change of velocity
What is compression ratio? Answer: Discharge divided by suction
What is Mass? Answer: the quantity of matter that a body contains
What is force? Answer: Any action on a body who tends to change:
Size, Shape or State
What is kenetic energy? Answer: The ability of a body to do work due to its
motion
What is potential energy? Answer: the ability of a body to do work by virtue of
its position
Welding Answer: the joining of two or more pieced of metal by the application
of heat and sometimes pressure
Arc welding Answer: the process of fusion is obtained by heating with an
electric arc(s)
Braze welding Answer: a form of fusion welding where the base metal is not
fused but is heated bu an oxyacetylene torch
What is an oxidizing agent? Answer: A chemical substance that can supply to
react with hydrogent or with metals
What is a reducing agent? Answer: fuels in the combustion process where they
combine with an oxidizing agent
, 2
temperature Answer: a measure of the molecular activity occurring within a
substance
the four class letters, shapes and colour code of a fire extinguisher Answer:
Green triangle - A - ordinary combustibles
Red Square - B - Flammable Liquids
Blue Circle - C - Electrical
Yellow Star - D - combustible metals
The 7 most important physical elements of a refrigerant Answer: Density
Odour
leakage tendency
Miscibility
Moisture Reaction
Flammability
Toxicity
The 6 types of pipe joints Answer: Soldered
Screwed
Flanged
Flared
Brazed
Welded
the 7 units of measurements on a psychometric chart Answer: Dry bulb
temperature
