FDNY A35 EXAM 2 2026 QUESTION
COLLECTION FIREGROUND OPERATIONS
MODULE SOLVED ITEMS AND RESPONSE KEY
◉ While doing a routine line inspection, the engineer notices the
bulb of the TXV on the floor refrigerant engineer should attach bulb
at the: Answer: The outlet end of the coil
◉ The most important requirement for a good evaporator is that:
Answer: It must have enough cooling surface to absorb the required
heat
◉ To convert water 32F to ice at the same temperature a
refrigeration system must remove: Answer: latent heat of fusion
◉ The use of oil in the refrigeration machine is to: Answer: Reduce
wear and friction in the compressor parts
◉ The following is a desirable property in a refrigeration Answer:
High latent heat
◉ The cooling medium for an evaporative condenser is: Answer: air
and water
,◉ The ratio of the actual pressure of water vapor in the atmosphere
to the saturated pressure of give temperature is: Answer: relative
humidity
◉ The only refrigerant/ temperature chart available to a refrigerant
engineer list the temperature is degrees Celsius if the chart indicates
a Celsius temperature of 4 degrees to equivalent to F: Answer: 39.2
degrees
◉ A refrigerant engineer was instructed to charge of 60-ton plant
with R134A Refrigerant. The refrigerant engineer will most likely
and the charging valve on the. Answer: Low pressure side of the
system
◉ A refrigerant engineer verifies that a chilled water pump is
cavitating. Of the following the most likely cause for this condition is:
Answer: Water leaks through the mechanical seals
◉ There is a decrease in the efficiency of a reciprocating compressor.
This mostly likely caused by: Answer: Low suction pressure
◉ The suction and discharge valve of the reciprocating compressor
are mounted as follows: Answer: Discharge valve on top of the valve
plate and suction valve below
, ◉ 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 pumps is significantly lower than the normal.
Which following action would you avoid taking: Answer: Put on an
additional surface condenser pump and lower the chilled water set
point
◉ A water pump is discharge against head 92 feet of water, this is
approximately to a pressure of: Answer: 40 psi
◉ Which one of the following will connect to the middle port on a
gauge manifold? Answer: Vacuum pump
◉ The most important reason for installing a muffler in
reciprocating refrigerant machine is: Answer: To contain the
compressor pulsation noise
◉ Of the following, the statement that most accurately characterize a
hermetic compressor is that it: Answer: Will have both the
compressor and motor enclosed is gas tight housing
COLLECTION FIREGROUND OPERATIONS
MODULE SOLVED ITEMS AND RESPONSE KEY
◉ While doing a routine line inspection, the engineer notices the
bulb of the TXV on the floor refrigerant engineer should attach bulb
at the: Answer: The outlet end of the coil
◉ The most important requirement for a good evaporator is that:
Answer: It must have enough cooling surface to absorb the required
heat
◉ To convert water 32F to ice at the same temperature a
refrigeration system must remove: Answer: latent heat of fusion
◉ The use of oil in the refrigeration machine is to: Answer: Reduce
wear and friction in the compressor parts
◉ The following is a desirable property in a refrigeration Answer:
High latent heat
◉ The cooling medium for an evaporative condenser is: Answer: air
and water
,◉ The ratio of the actual pressure of water vapor in the atmosphere
to the saturated pressure of give temperature is: Answer: relative
humidity
◉ The only refrigerant/ temperature chart available to a refrigerant
engineer list the temperature is degrees Celsius if the chart indicates
a Celsius temperature of 4 degrees to equivalent to F: Answer: 39.2
degrees
◉ A refrigerant engineer was instructed to charge of 60-ton plant
with R134A Refrigerant. The refrigerant engineer will most likely
and the charging valve on the. Answer: Low pressure side of the
system
◉ A refrigerant engineer verifies that a chilled water pump is
cavitating. Of the following the most likely cause for this condition is:
Answer: Water leaks through the mechanical seals
◉ There is a decrease in the efficiency of a reciprocating compressor.
This mostly likely caused by: Answer: Low suction pressure
◉ The suction and discharge valve of the reciprocating compressor
are mounted as follows: Answer: Discharge valve on top of the valve
plate and suction valve below
, ◉ 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 pumps is significantly lower than the normal.
Which following action would you avoid taking: Answer: Put on an
additional surface condenser pump and lower the chilled water set
point
◉ A water pump is discharge against head 92 feet of water, this is
approximately to a pressure of: Answer: 40 psi
◉ Which one of the following will connect to the middle port on a
gauge manifold? Answer: Vacuum pump
◉ The most important reason for installing a muffler in
reciprocating refrigerant machine is: Answer: To contain the
compressor pulsation noise
◉ Of the following, the statement that most accurately characterize a
hermetic compressor is that it: Answer: Will have both the
compressor and motor enclosed is gas tight housing
