RMO FINAL EXAM REVIEW WITH
EXAM QUESTIONS AND CORRECT
SOLUTIONS UPDATED 2025/2026
ALREADY GRADED!!100%
GUARANTEED PASS!!!<<BRAND
NEW VERSION>>
What is the primary reason ribbed metal piping is used for electrical wires
A) It is easier to install than non-ribbed metal piping
B) It allows for flexibility and accounts for vibrations
C) It allows for ventilating the heat from wires
D) It is less costly to use than non-ribbed metal piping - ANSWER ✓ It allows for
flexibility and accounts for vibrations
The British thermal unit (BTU) is the measurement of heat energy. If 10 BTU are
transferred to 10 pounds of water, the water temperature increase will be closest to
A) 10F
B) 1C
C) 1F
D) 10C - ANSWER ✓ 1F
A superheated vapor is a
A) Dry vapor at the saturation temperature
B) Dry saturated vapor
C) Dry vapor above the saturation temperature
D) Vapor with minimal amount of included liquid - ANSWER ✓ Dry vapor above
the saturation temperature
, Copper tubing refrigerant lines must be installed for a new system. It is a well
known service practice that tubing collapses at bends that must be made, the
refrigerant engineer should use
A) Brazed elbows
B) Annealed tubing
C) Lever type tubing bender
D) Very small bend radius - ANSWER ✓ Level type tubing bender
A centrifugal water pump is considered to be fully primed when
A) The pump is full of air
B) Liquid or leaking past the packing gland
C) The pump runs with no knocking noise
D) The pump is full of liquid - ANSWER ✓ The pump is full of liquid
What happens when a steam turbine reaches critical speed
A) Turbine will shut down
B) Turbine will vibrate violently
C) Turbine will slow down
D) Turbine will speed up - ANSWER ✓ Turbine will vibrate violenty
The amount of refrigerant that flows through the orifices of a economizer is
determined by the
A) Number of economizer stages
B) Temperature of the high side refrigerant
C) Number of compressor stages
D) Difference between the high side and low side pressure - ANSWER ✓
Difference between the high side and low side pressure
In most semi-hermetic compressors, the suction vapor is used to
A) Removes oil from the motor housing
B) Cools the motor
C) Minimizes oil foaming
D) Removes oil foam from the shaft - ANSWER ✓ Cools the motor
,How would you calibrate a thermometer
A) Place the thermometer in a cup of ice water
B) Place the thermometer in a cup of hot water
C) Place the thermometer in a superheated system
D) Compare temperature to another thermometer - ANSWER ✓ Place the
thermometer in a cup of ice water
Under certain circumstances is it ok to chain an exit door
A) Yes, to keep your buildings safe from intruders
B) Yes, to keep students from leaving school
C) No, it is never ok
D) Both A and B are correct - ANSWER ✓ No, it is never ok
Cross connections and standpipe risers must be painted
A) Green
B) Red
C) Yellow
D) Green with yellow stripe - ANSWER ✓ Red
Why is a refrigerant gauge called a compound gauge
A) You can read the pressure on the high side and the low side
B) You can read temperature and pressure
C) It has scales for different types of refrigerant
D) It reads positive pressure and vacuum - ANSWER ✓ It reads positive pressure
and vacuum
Regardless of the ASHRAE refrigerant classification in use, in the event of a
refrigerant escape the engineer should be aware of
A) Refrigerant fire
B) Refrigerant toxicity
C) Asphyxiation
D) Refrigeration odor - ANSWER ✓ Asphyxiation
What type of refrigerant is found inside the machines gauges
, A) R-134A
B) Same type of refrigerant inside the machine
C) R-22
D) Glycol - ANSWER ✓ Same type of refrigerant inside the machine
You are the engineer running a 2000-ton (steam-driven turbine) centrifugal
refrigeration system, a refrigeration system supplies chilled water to a college
campus with multiple buildings. While making your rounds you notice that the
discharge pressure of your condenser water pump is significantly lower than
normal. Which following action would you avoid taking
A) Put on an additional condenser water pump
B) Flush out the bucket strainer of the condensed water pump
C) Send your assistant to check for cooling tower level
D) Put on an additional surface condenser pump and lower the chilled water set
point - ANSWER ✓ Put on an additional surface condenser pump and lower the
chilled water set point
What are pre hot works procedures performed prior to hot works
A) Check area once a day leading up to hot works
B) Check area once a week prior to hot works
C) Check area day of hot works
D) Check area day after hot works - ANSWER ✓ Check area once a day leading
up to hot works
Standpipe certificate should be available for
A) FDNY and OSHA
B) FDNY and building inspector
C) FDNY and EPA
D) FDNY and NFPA - ANSWER ✓ FDNY and building inspector
When is a chemical fire extinguisher system needed
A) Where water is not sufficient
B) Pre action system
C) Deluge system
EXAM QUESTIONS AND CORRECT
SOLUTIONS UPDATED 2025/2026
ALREADY GRADED!!100%
GUARANTEED PASS!!!<<BRAND
NEW VERSION>>
What is the primary reason ribbed metal piping is used for electrical wires
A) It is easier to install than non-ribbed metal piping
B) It allows for flexibility and accounts for vibrations
C) It allows for ventilating the heat from wires
D) It is less costly to use than non-ribbed metal piping - ANSWER ✓ It allows for
flexibility and accounts for vibrations
The British thermal unit (BTU) is the measurement of heat energy. If 10 BTU are
transferred to 10 pounds of water, the water temperature increase will be closest to
A) 10F
B) 1C
C) 1F
D) 10C - ANSWER ✓ 1F
A superheated vapor is a
A) Dry vapor at the saturation temperature
B) Dry saturated vapor
C) Dry vapor above the saturation temperature
D) Vapor with minimal amount of included liquid - ANSWER ✓ Dry vapor above
the saturation temperature
, Copper tubing refrigerant lines must be installed for a new system. It is a well
known service practice that tubing collapses at bends that must be made, the
refrigerant engineer should use
A) Brazed elbows
B) Annealed tubing
C) Lever type tubing bender
D) Very small bend radius - ANSWER ✓ Level type tubing bender
A centrifugal water pump is considered to be fully primed when
A) The pump is full of air
B) Liquid or leaking past the packing gland
C) The pump runs with no knocking noise
D) The pump is full of liquid - ANSWER ✓ The pump is full of liquid
What happens when a steam turbine reaches critical speed
A) Turbine will shut down
B) Turbine will vibrate violently
C) Turbine will slow down
D) Turbine will speed up - ANSWER ✓ Turbine will vibrate violenty
The amount of refrigerant that flows through the orifices of a economizer is
determined by the
A) Number of economizer stages
B) Temperature of the high side refrigerant
C) Number of compressor stages
D) Difference between the high side and low side pressure - ANSWER ✓
Difference between the high side and low side pressure
In most semi-hermetic compressors, the suction vapor is used to
A) Removes oil from the motor housing
B) Cools the motor
C) Minimizes oil foaming
D) Removes oil foam from the shaft - ANSWER ✓ Cools the motor
,How would you calibrate a thermometer
A) Place the thermometer in a cup of ice water
B) Place the thermometer in a cup of hot water
C) Place the thermometer in a superheated system
D) Compare temperature to another thermometer - ANSWER ✓ Place the
thermometer in a cup of ice water
Under certain circumstances is it ok to chain an exit door
A) Yes, to keep your buildings safe from intruders
B) Yes, to keep students from leaving school
C) No, it is never ok
D) Both A and B are correct - ANSWER ✓ No, it is never ok
Cross connections and standpipe risers must be painted
A) Green
B) Red
C) Yellow
D) Green with yellow stripe - ANSWER ✓ Red
Why is a refrigerant gauge called a compound gauge
A) You can read the pressure on the high side and the low side
B) You can read temperature and pressure
C) It has scales for different types of refrigerant
D) It reads positive pressure and vacuum - ANSWER ✓ It reads positive pressure
and vacuum
Regardless of the ASHRAE refrigerant classification in use, in the event of a
refrigerant escape the engineer should be aware of
A) Refrigerant fire
B) Refrigerant toxicity
C) Asphyxiation
D) Refrigeration odor - ANSWER ✓ Asphyxiation
What type of refrigerant is found inside the machines gauges
, A) R-134A
B) Same type of refrigerant inside the machine
C) R-22
D) Glycol - ANSWER ✓ Same type of refrigerant inside the machine
You are the engineer running a 2000-ton (steam-driven turbine) centrifugal
refrigeration system, a refrigeration system supplies chilled water to a college
campus with multiple buildings. While making your rounds you notice that the
discharge pressure of your condenser water pump is significantly lower than
normal. Which following action would you avoid taking
A) Put on an additional condenser water pump
B) Flush out the bucket strainer of the condensed water pump
C) Send your assistant to check for cooling tower level
D) Put on an additional surface condenser pump and lower the chilled water set
point - ANSWER ✓ Put on an additional surface condenser pump and lower the
chilled water set point
What are pre hot works procedures performed prior to hot works
A) Check area once a day leading up to hot works
B) Check area once a week prior to hot works
C) Check area day of hot works
D) Check area day after hot works - ANSWER ✓ Check area once a day leading
up to hot works
Standpipe certificate should be available for
A) FDNY and OSHA
B) FDNY and building inspector
C) FDNY and EPA
D) FDNY and NFPA - ANSWER ✓ FDNY and building inspector
When is a chemical fire extinguisher system needed
A) Where water is not sufficient
B) Pre action system
C) Deluge system
