4B ABSA Ultimate Study Set |1909 questions with
accurate answers
________ is increased or decreased according to system demand to
maintain pressure at constant value.
a. compressor pressure
b. compressor flow
c. compressor speed
d. compressor intake Ans✓✓✓ C
__________ uses two systems to match compressor output to system
demand.
a. Dual capacity control
b. Dual flow control
c. Dual pressure control
d. Dual speed control Ans✓✓✓ A
---------- requires owners to provide employees with a written emergency
plan.
Select one:
a. IIAR
b. CSA B52
c. CEPA
d. ASME B31.5
e. OSHA Ans✓✓✓ b
,"E2" regulation for Ammonia refrigeration is applicable to the
refrigerant amount of:
a. 1000 kg
b. 300 kg
c. 4500 kg and more
d. 50 kg
e. 2500 kg Ans✓✓✓ c
"Load/Unload" Control is also called:
a. Operating Speed Control
b. Constant Speed Control
c. Variable Speed Control
d. Compression Speed Control Ans✓✓✓ B
[ASME section I/ASME section VII/CSA B51/ASME CSD-1/ASME
section VI] recommends that flame scanners be replaced annually, in
accordance with manufacturer instructions. Ans✓✓✓ ASME CSD-1
10. Cooling towers by design use:
Select one:
a. softened water
b. lots of water
c. hard water
,d. city water
e. very little water Ans✓✓✓ b
A _________ is used to lift a load on which there is more than one eye
bolt installed:
Select one:
a. bridle
b. pole
c. pipe
d. strap Ans✓✓✓ a
A bladder type of expansion tank limits the oxygen in the system by:
Select one:
a. An open expansion tank is always mounted very high in the system
allowing the oxygen to penetrate the water by gravity assist, a bladder
expansion tank can be mounted anywhere in the system.
b. Not having the air in direct contact with the water.
c. The bladder works like a reverse osmosis unit and moves air from the
water to the air space
d. The bladder contains a special coating that absorbs 02 from the water
Ans✓✓✓ b
A blowdown ring on a safety valve is used to:
Select one:
a. Increase the life of the cone shaped lip
, b. Adjust the blowdown differential
c. Increase the effectiveness of the safety valve
d. Set the opening pressure
e. Adjust the operating pressure of the valve Ans✓✓✓ b
A BMS system will protect the equipment from unsafe operating
conditions
Select one:
True
False Ans✓✓✓ True
A boiler furnace pre purge:
Select one:
a. must last a specific amount of time
b. will take place at the end of a boiler shut-down
c. is the shortest step in the start-up sequence
d. can take place normally even if there is a low water condition
e. takes place with the pilot on Ans✓✓✓ a
A boiler in a single boiler downfeed hot water system:
Select one:
a. is equipped with surge protection devices for water flow control
accurate answers
________ is increased or decreased according to system demand to
maintain pressure at constant value.
a. compressor pressure
b. compressor flow
c. compressor speed
d. compressor intake Ans✓✓✓ C
__________ uses two systems to match compressor output to system
demand.
a. Dual capacity control
b. Dual flow control
c. Dual pressure control
d. Dual speed control Ans✓✓✓ A
---------- requires owners to provide employees with a written emergency
plan.
Select one:
a. IIAR
b. CSA B52
c. CEPA
d. ASME B31.5
e. OSHA Ans✓✓✓ b
,"E2" regulation for Ammonia refrigeration is applicable to the
refrigerant amount of:
a. 1000 kg
b. 300 kg
c. 4500 kg and more
d. 50 kg
e. 2500 kg Ans✓✓✓ c
"Load/Unload" Control is also called:
a. Operating Speed Control
b. Constant Speed Control
c. Variable Speed Control
d. Compression Speed Control Ans✓✓✓ B
[ASME section I/ASME section VII/CSA B51/ASME CSD-1/ASME
section VI] recommends that flame scanners be replaced annually, in
accordance with manufacturer instructions. Ans✓✓✓ ASME CSD-1
10. Cooling towers by design use:
Select one:
a. softened water
b. lots of water
c. hard water
,d. city water
e. very little water Ans✓✓✓ b
A _________ is used to lift a load on which there is more than one eye
bolt installed:
Select one:
a. bridle
b. pole
c. pipe
d. strap Ans✓✓✓ a
A bladder type of expansion tank limits the oxygen in the system by:
Select one:
a. An open expansion tank is always mounted very high in the system
allowing the oxygen to penetrate the water by gravity assist, a bladder
expansion tank can be mounted anywhere in the system.
b. Not having the air in direct contact with the water.
c. The bladder works like a reverse osmosis unit and moves air from the
water to the air space
d. The bladder contains a special coating that absorbs 02 from the water
Ans✓✓✓ b
A blowdown ring on a safety valve is used to:
Select one:
a. Increase the life of the cone shaped lip
, b. Adjust the blowdown differential
c. Increase the effectiveness of the safety valve
d. Set the opening pressure
e. Adjust the operating pressure of the valve Ans✓✓✓ b
A BMS system will protect the equipment from unsafe operating
conditions
Select one:
True
False Ans✓✓✓ True
A boiler furnace pre purge:
Select one:
a. must last a specific amount of time
b. will take place at the end of a boiler shut-down
c. is the shortest step in the start-up sequence
d. can take place normally even if there is a low water condition
e. takes place with the pilot on Ans✓✓✓ a
A boiler in a single boiler downfeed hot water system:
Select one:
a. is equipped with surge protection devices for water flow control
