Power Engineering 4B Final Review UPDATED ACTUAL Questions and
CORRECT Answers
Question: Flaking of bearing surfaces can be caused by
Correct Answer: : installation misalignment
Question: A generally accepted maximum bearing temperature operating range is
Correct Answer: : 65 to 70 °C
Question: When grease is used in an antifriction bearing, the bearing housing should not be filled more
than __________ full.
Correct Answer: The answer is the explanation or keyed response connected to this question in Power
Engineering 4B Final Review. In power engineering, it identifies the related equipment, operating principle,
safety requirement, or maintenance procedure.
Question: When greasing a bearing, care must be taken to
Correct Answer: : select the proper grease
Question: Why aren't oil grooves located in the pressure zone of a shell bearing?
Correct Answer: grooves in this area can disrupt the oil film and cause damage
Question: Large sleeve bearings have grooves
Correct Answer: : in the non-pressure area
Question: During the starting or stopping portion of a machinery's operation, what type of lubrication
occurs?
Correct Answer: Boundary
Question: Fluid film lubrication
Correct Answer: : is also called flood lubrication
Question: If a piece of machinery were particularity difficult to reach and service, what type of lubricant
would be useful?
Correct Answer: a solid lubricant
Question: The type of grease used for heavily loaded machinery operating at slow speeds is
Correct Answer: : specialty grease
Question: In order to protect the driver, a start-stop air compressor should be equipped with
Correct Answer: : pre-start automatic unloading
Question: An aftercooler which is equipped with a shut-off valve between the aftercooler and the receiver,
should also be equipped with a _________
Correct Answer: : safety valve
Question: An air compressor, which gives two compression strokes per crankshaft revolution, is
Correct Answer: : single cylinder double acting
,Question: Sliding vane compressors
Correct Answer: : are positive displacement compressors
Question: Most pump failures, damage, or both occurs
Correct Answer: : during initial start-up
Question: The factors affecting what types of material the mechanical seal mating surfaces are made of
depends on _________
Correct Answer: : pressure pump speed type of fluid temperature sealing design
Question: The seal cage on the shaft of a centrifugal pump
Correct Answer: : distributes sealing water to the packing
Question: The capacity of a centrifugal pump should only be reduced by
Correct Answer: : throttling the discharge valve
Question: When starting-up a rotary pump you must be sure that the
Correct Answer: : discharge valve is open
Question: A pump which supplies oil to the burner is the _____ pump
Correct Answer: : fuel oil
Question: A siphon between the ON-OFF control and the steam boiler is used to protect the control against
Correct Answer: : steam
Question: For hot water boilers operating up to 400 kPa, the higher safety relief valve setting must not
exceed the MAWP by
Correct Answer: : 40 kPa
Question: The temperature indicator of a hot water boiler should indicate water temperature
Correct Answer: : at the boiler outlet
Question: ASME I PG-60.6.1 states that the pressure gauge connections to a high steam boiler, except the
syphon must not be less than
Correct Answer: : NPS ¼ (DN8)
Question: ASME IV code for Steam Gauges on steam heating Boilers referenced in Part HG
Correct Answer: : 602
Question: All boilers having a fixed water level operating at a MAWP exceeding 3 MPa must have at least
Correct Answer: : two gage glasses
Question: Towards the end of the boiler furnace pre-purge, the timer
Correct Answer: : energizes and activates the ignitor
Question: Boiler programming controls
Correct Answer: : are interconnected with the Low Water Cutoff
, Question: The infrared scanner should be mounted in such a way that its temperature will not exceed
_______.
Correct Answer: 50ºC
Question: A thermocouple
Correct Answer: : must be inserted into the flame to work effectively
Question: The CSA B149.1 Natural Gas and Propane Installation code limits the_________ for buildings
of various occupancies
Correct Answer: : maximum fuel pressure
Question: If the pressure relief valve continues to discharge after the try lever test
Correct Answer: : - operate the try lever 2 or 3 times to clear the valve disc
Question: With reference to ASME BPVC IV, HG 401.1 (e)
Correct Answer: The blowdown of safety valves:: need not be adjustable
Question: With reference to ASME BPVC IV, HG 400.1 (e)
Correct Answer: The safety valve for each steam heating boiler when operated at maximum capacity, the
pressure rise shall not be more than ________ of the maximum allowable working pressure:- : 35 kPa
Question: According to ASME BPVC I, PG-73 (2015), the use of pressure relief valve(s) (PRV) with
bronze (SB-61, SB-148) parts is prohibited for superheaters operating over ________°C
Correct Answer: : 230
Question: When a power failure occurs, all electrically powered equipment stops, unless connected to
Correct Answer: : an uninterruptible power source
Question: Prior to shutting down a hot water boiler
Correct Answer: : accurate water testing must be done
Question: Boiler maintenance logs must
Correct Answer: : provide a continuous record of boiler operation, testing and maintenance
Question: Another method used to perform SOP's besides the sign-off method
Correct Answer: : would be using place keepers
Question: When a boiler stays on low fire, the problem may be caused by
Correct Answer: : inoperative damper motor
Question: A possible cause that would prevent a draft fan from starting would be
Correct Answer: : limit control circuit not completed
Question: The most important rule in safe operation of a steam heating boiler is
Correct Answer: : to maintain a normal water level
Question: Most higher capacity boiler burners have SSOV's with proof of closure switches
Correct Answer: : in all cases, proof of closure is a pre ignition interlock
CORRECT Answers
Question: Flaking of bearing surfaces can be caused by
Correct Answer: : installation misalignment
Question: A generally accepted maximum bearing temperature operating range is
Correct Answer: : 65 to 70 °C
Question: When grease is used in an antifriction bearing, the bearing housing should not be filled more
than __________ full.
Correct Answer: The answer is the explanation or keyed response connected to this question in Power
Engineering 4B Final Review. In power engineering, it identifies the related equipment, operating principle,
safety requirement, or maintenance procedure.
Question: When greasing a bearing, care must be taken to
Correct Answer: : select the proper grease
Question: Why aren't oil grooves located in the pressure zone of a shell bearing?
Correct Answer: grooves in this area can disrupt the oil film and cause damage
Question: Large sleeve bearings have grooves
Correct Answer: : in the non-pressure area
Question: During the starting or stopping portion of a machinery's operation, what type of lubrication
occurs?
Correct Answer: Boundary
Question: Fluid film lubrication
Correct Answer: : is also called flood lubrication
Question: If a piece of machinery were particularity difficult to reach and service, what type of lubricant
would be useful?
Correct Answer: a solid lubricant
Question: The type of grease used for heavily loaded machinery operating at slow speeds is
Correct Answer: : specialty grease
Question: In order to protect the driver, a start-stop air compressor should be equipped with
Correct Answer: : pre-start automatic unloading
Question: An aftercooler which is equipped with a shut-off valve between the aftercooler and the receiver,
should also be equipped with a _________
Correct Answer: : safety valve
Question: An air compressor, which gives two compression strokes per crankshaft revolution, is
Correct Answer: : single cylinder double acting
,Question: Sliding vane compressors
Correct Answer: : are positive displacement compressors
Question: Most pump failures, damage, or both occurs
Correct Answer: : during initial start-up
Question: The factors affecting what types of material the mechanical seal mating surfaces are made of
depends on _________
Correct Answer: : pressure pump speed type of fluid temperature sealing design
Question: The seal cage on the shaft of a centrifugal pump
Correct Answer: : distributes sealing water to the packing
Question: The capacity of a centrifugal pump should only be reduced by
Correct Answer: : throttling the discharge valve
Question: When starting-up a rotary pump you must be sure that the
Correct Answer: : discharge valve is open
Question: A pump which supplies oil to the burner is the _____ pump
Correct Answer: : fuel oil
Question: A siphon between the ON-OFF control and the steam boiler is used to protect the control against
Correct Answer: : steam
Question: For hot water boilers operating up to 400 kPa, the higher safety relief valve setting must not
exceed the MAWP by
Correct Answer: : 40 kPa
Question: The temperature indicator of a hot water boiler should indicate water temperature
Correct Answer: : at the boiler outlet
Question: ASME I PG-60.6.1 states that the pressure gauge connections to a high steam boiler, except the
syphon must not be less than
Correct Answer: : NPS ¼ (DN8)
Question: ASME IV code for Steam Gauges on steam heating Boilers referenced in Part HG
Correct Answer: : 602
Question: All boilers having a fixed water level operating at a MAWP exceeding 3 MPa must have at least
Correct Answer: : two gage glasses
Question: Towards the end of the boiler furnace pre-purge, the timer
Correct Answer: : energizes and activates the ignitor
Question: Boiler programming controls
Correct Answer: : are interconnected with the Low Water Cutoff
, Question: The infrared scanner should be mounted in such a way that its temperature will not exceed
_______.
Correct Answer: 50ºC
Question: A thermocouple
Correct Answer: : must be inserted into the flame to work effectively
Question: The CSA B149.1 Natural Gas and Propane Installation code limits the_________ for buildings
of various occupancies
Correct Answer: : maximum fuel pressure
Question: If the pressure relief valve continues to discharge after the try lever test
Correct Answer: : - operate the try lever 2 or 3 times to clear the valve disc
Question: With reference to ASME BPVC IV, HG 401.1 (e)
Correct Answer: The blowdown of safety valves:: need not be adjustable
Question: With reference to ASME BPVC IV, HG 400.1 (e)
Correct Answer: The safety valve for each steam heating boiler when operated at maximum capacity, the
pressure rise shall not be more than ________ of the maximum allowable working pressure:- : 35 kPa
Question: According to ASME BPVC I, PG-73 (2015), the use of pressure relief valve(s) (PRV) with
bronze (SB-61, SB-148) parts is prohibited for superheaters operating over ________°C
Correct Answer: : 230
Question: When a power failure occurs, all electrically powered equipment stops, unless connected to
Correct Answer: : an uninterruptible power source
Question: Prior to shutting down a hot water boiler
Correct Answer: : accurate water testing must be done
Question: Boiler maintenance logs must
Correct Answer: : provide a continuous record of boiler operation, testing and maintenance
Question: Another method used to perform SOP's besides the sign-off method
Correct Answer: : would be using place keepers
Question: When a boiler stays on low fire, the problem may be caused by
Correct Answer: : inoperative damper motor
Question: A possible cause that would prevent a draft fan from starting would be
Correct Answer: : limit control circuit not completed
Question: The most important rule in safe operation of a steam heating boiler is
Correct Answer: : to maintain a normal water level
Question: Most higher capacity boiler burners have SSOV's with proof of closure switches
Correct Answer: : in all cases, proof of closure is a pre ignition interlock
