LA STEAM ENGINEER EXAM | QUESTIONS AND ANSWERS |
VERIFIED AND WELL DETAILED ANSWERS | EXAM ALREADY
GRADED A+ | LATEST EXAM UPDATE
A desuperheater that is installed in a boiler is used to control.. - CORRECT
ANSWER - Super heated steam temperature
Economizers are finned to.. - CORRECT ANSWER - Increase the rate of heat for
heat transfer
The heat transfer taking place in a surface condenser is accomplished mainly by.. -
CORRECT ANSWER - Conduction
An unfired pressure vessel which is used to transfer heat from one substance to
another is called.. - CORRECT ANSWER - Feed water heater, Evaporator and
Oil Cooler
Boiler economizers are primarily used for.. - CORRECT ANSWER - Recovery
heat from flue gas
The main purpose of the deaerator is to.. - CORRECT ANSWER - Eliminate non-
condensable gases
Superheated steam is more efficient because.. - CORRECT ANSWER -
Temperature & Total heat content are increased
,A spear boiler feed water pump is equipped with a check valve in the discharge
line to... - CORRECT ANSWER - Permit fast start up by leaving the discharge
valve open
Excessive fireside deposits on heating surfaces of a uncontrolled super heated
boiler would be indicated by... - CORRECT ANSWER - Decreased super heater
outlet temperature
Why is the super heater safety valve set to release before the drum safety? -
CORRECT ANSWER - To ensure flow through the super heater
What is the purpose of a steam trap? - CORRECT ANSWER - To drain water and
air
A steam trap utilizes flash steam to open but what comes after for the closing
operation? - CORRECT ANSWER - Impulse
Pitting in suction areas of a bronze impeller in centrifugal pumps is usually caused
by? - CORRECT ANSWER - (Best answer) Cavitation or (Second Best)
Corrosion
What type of pump has no moving parts? - CORRECT ANSWER - Jet pump
Centrifugal boiler feed water pumps are usually equipped with? - CORRECT
ANSWER - Bypass valves
, Which condition is the probable cause of centrifugal pump failure to deliver water
when first started? - CORRECT ANSWER - Pump is not primed
Low pressure from metering or proportioning pumps may be caused by? -
CORRECT ANSWER - Rapid wear on plunger
If a centrifugal pump that operates with suction lift becomes air bound you should?
- CORRECT ANSWER - Reprime the pump
An important consideration in the prevention of carryover in a boiler is to? -
CORRECT ANSWER - Control water level
As alkalinity of boiler water increases the water inside the boiler becomes
increasingly _________? - CORRECT ANSWER - Soft
The residue created from chemically treated feed water remains in the boiler thus
increasing the need for? - CORRECT ANSWER - Boiler Blowdown
Grooving and pitting is caused by? - CORRECT ANSWER - Dissolved O2 and
CO2
What test is used to detect corrosive boiler water? - CORRECT ANSWER -
Hardness Test
Chemical which would not be used for the purpose of regeneration of softner and
dematerialize is? - CORRECT ANSWER - Sulfuric acid
VERIFIED AND WELL DETAILED ANSWERS | EXAM ALREADY
GRADED A+ | LATEST EXAM UPDATE
A desuperheater that is installed in a boiler is used to control.. - CORRECT
ANSWER - Super heated steam temperature
Economizers are finned to.. - CORRECT ANSWER - Increase the rate of heat for
heat transfer
The heat transfer taking place in a surface condenser is accomplished mainly by.. -
CORRECT ANSWER - Conduction
An unfired pressure vessel which is used to transfer heat from one substance to
another is called.. - CORRECT ANSWER - Feed water heater, Evaporator and
Oil Cooler
Boiler economizers are primarily used for.. - CORRECT ANSWER - Recovery
heat from flue gas
The main purpose of the deaerator is to.. - CORRECT ANSWER - Eliminate non-
condensable gases
Superheated steam is more efficient because.. - CORRECT ANSWER -
Temperature & Total heat content are increased
,A spear boiler feed water pump is equipped with a check valve in the discharge
line to... - CORRECT ANSWER - Permit fast start up by leaving the discharge
valve open
Excessive fireside deposits on heating surfaces of a uncontrolled super heated
boiler would be indicated by... - CORRECT ANSWER - Decreased super heater
outlet temperature
Why is the super heater safety valve set to release before the drum safety? -
CORRECT ANSWER - To ensure flow through the super heater
What is the purpose of a steam trap? - CORRECT ANSWER - To drain water and
air
A steam trap utilizes flash steam to open but what comes after for the closing
operation? - CORRECT ANSWER - Impulse
Pitting in suction areas of a bronze impeller in centrifugal pumps is usually caused
by? - CORRECT ANSWER - (Best answer) Cavitation or (Second Best)
Corrosion
What type of pump has no moving parts? - CORRECT ANSWER - Jet pump
Centrifugal boiler feed water pumps are usually equipped with? - CORRECT
ANSWER - Bypass valves
, Which condition is the probable cause of centrifugal pump failure to deliver water
when first started? - CORRECT ANSWER - Pump is not primed
Low pressure from metering or proportioning pumps may be caused by? -
CORRECT ANSWER - Rapid wear on plunger
If a centrifugal pump that operates with suction lift becomes air bound you should?
- CORRECT ANSWER - Reprime the pump
An important consideration in the prevention of carryover in a boiler is to? -
CORRECT ANSWER - Control water level
As alkalinity of boiler water increases the water inside the boiler becomes
increasingly _________? - CORRECT ANSWER - Soft
The residue created from chemically treated feed water remains in the boiler thus
increasing the need for? - CORRECT ANSWER - Boiler Blowdown
Grooving and pitting is caused by? - CORRECT ANSWER - Dissolved O2 and
CO2
What test is used to detect corrosive boiler water? - CORRECT ANSWER -
Hardness Test
Chemical which would not be used for the purpose of regeneration of softner and
dematerialize is? - CORRECT ANSWER - Sulfuric acid
