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FOR GRAD COMP 9

FOR GRAD COMP 9
57問 • 2年前
  • ROEL VINCENT CATUBUAN
    • 通報

    問題一覧

  • 1

    When a flash-type evaporator is to be secured for an extended period of time, the entire unit should be drained, cleaned

    vented to the atmosphere

  • 2

    A dirty intercooler on an air compressor will cause

    increased motor current

  • 3

    A leakage or loss of pressure past the piston into the crankcase is __

    blow-by

  • 4

    When a diesel engine emits blue exhaust smoke this is due to

    excessive cylinder lubrication

  • 5

    Boiler firesides must be kept free of soot accumulations because

    soot insulates the boiler heating surfaces

  • 6

    A suitable location for the installation of an impulse type steam trap would be in the

    horizontal run of drain line from the lowest point at the outlet of the heat exchanger

  • 7

    What could cause a flame failure in a boiler?

    flame eye not properly aligned

  • 8

    If the fuel oil temperature going to the burners is too low, the __

    boiler will produce heavy black smoke

  • 9

    When maneuvering, you discover heavy smoke coming from the turbocharger casing. You should

    notify the bridge and ask to shut the engine down

  • 10

    What lifting gear is used to remove the cylinder head of an diesel generator after disconnecting it from the engine?

    chain block

  • 11

    Excessive lube oil consumption in a reciprocating air compressor is an indication of

    worn or broken piston rings

  • 12

    One cause of leaky valves in an air compressor may be

    too much suction pressure

  • 13

    The precautionary things to be done to avoid electric shock while working onboard are ____. I. Work on dry places. II. Use rubber gloves and shoes. III. Avoid working on hot places

    I and II

  • 14

    Very small irregularities on the seat and disk of a globe valve may be manually repaired with the valve in place by the process known

    lapping

  • 15

    What do you call the process of putting grinding compound between an exhaust valve and valve seat and rotating it in back and forth motion to restore a good fit on both the seat and the valve?

    lapping

  • 16

    A clogged fuel oil filter could result in:

    any of the above

  • 17

    The factors that determine the service life of packing in a pump will include which of the following conditions?

    all of the above

  • 18

    When there is crackling noise coming from a centrifugal pump housing this is an indication of __

    excessive suction lift

  • 19

    If a refrigeration system were short of refrigerant, the condition would result in __

    continuous running of the compressor

  • 20

    Dark exhaust gas from the engine is caused by __

    engine overload

  • 21

    What prevents the steam pressure from exceeding allowable working pressure

    safety valve

  • 22

    If the flow of water from a centrifugal pump is allowed to be stopped by closing the discharge valve while the pump continues to run for an indefinite period, the __

    liquid may overheat and vaporizew

  • 23

    Before commencing work inside a bilge tank what test are you require to before entering

    test the air inside the tank using gas analyzer

  • 24

    What is a lantern ring?

    a part of the packing used to prevent air lackage on a centrifugal pump shaft

  • 25

    Which of the additives listed is used to reduce the foaming tendency of lube oil?

    suppressants

  • 26

    Malfunctioning of the feed pump to deliver feed water to an auxiliary boiler could be caused by __

    grounded probes on the water level control

  • 27

    Why is there a relief valve installed on the boiler burner fuel service system?

    to protect the system from high discharge pressure

  • 28

    Air leaking in the flash type distilling plant could occur through __

    all of the options

  • 29

    A diesel engine fails to start. What should not be the cause?

    water leaking into cylinder

  • 30

    If a centrifugal pump delivers insufficient discharge pressure due to worn wearing rings, what corrective actions is called for

    replace the rings

  • 31

    What is the small end bearing in 4 stroke diesel engines?

    a bearing fitted on the connecting rod where the piston pin rotates

  • 32

    Why is there a relief valve installed on the boiler burner fuel service system?

    to protect the system from high discharge pressure

  • 33

    Which of the condensers listed is cooled by seawater?

    main condenser

  • 34

    What clearance is important in main condenser pumps to insure adequate discharge pressures?

    impeller wearing ring and casing wearing ring

  • 35

    Is it advisable to clean and reuse paper LO cartridge filters?

    No

  • 36

    A leakage first-stage unloader ina n air compressor will result in __

    all of the above

  • 37

    A leakage first-stage unloader ina n air compressor will result in __

    an abnormally low intercooler pressure

  • 38

    Heavy soot accumulations in an auxiliary boiler could be caused by ___

    improper burner maintenance

  • 39

    To connect two lengths of pipe previously set in place, you should use a pipe

    union

  • 40

    What type cooling medium is use on modern 4 stroke diesel generators to cool atomizer nozzles?

    cooling water

  • 41

    If a refrigeration system is overchaged with refrigerant, one result will be __

    water pressure will lower continually to shut off head

  • 42

    The nut of the bowl assembly of a purifier is confirmed tight by means of ___

    aligned marks on the body and nut

  • 43

    The noise created by condensate in steam lines when opening fuel oil storage tank heater is called ___

    water hammer

  • 44

    Combustion gases can leak into the fire room through _

    soot blower swivel tube packing glands

  • 45

    Badly leaking refrigeration compressor discharge valves will cause

    constant running of the compressor

  • 46

    High salinity can be reduced and water chemistry controlled in a steaming boiler by adding caustic soda and phoshate and then

    using continuous blowdown

  • 47

    What type of work permit is needed when working inside to clean the boiler tubes the boiler?

    enclose space entry permit

  • 48

    One cause of diesel engine surging can be a result of

    njection pump fuel rack binding or sticking

  • 49

    The feed water in an auxiliary boiler should be chemically tested daily for alkalinity and

    chloride

  • 50

    If the foundation bolts of a reciprocating air compressor are loose, which of the conditions below will occur?

    the compressor will vibrate

  • 51

    A suspected leak in an operating fuel oil heating coil is normally confirmed by __

    checking the drain inspection tank

  • 52

    Which of the following statement is true about Lubricating oil coolers?

    the pressure of oil less than the cooling water

  • 53

    When there is enough supply of fue oil and engine failed to turn over after air starting valve has opened, what could be the cause?

    insufficient air pressure in the tank

  • 54

    What is the common cause of lube oil purifier overflow?

    all of these

  • 55

    Dark exhaust gas from the engine is caused by __

    engine overload

  • 56

    What corrective action is required when the boiler water test result show any hardness?

    none

  • 57

    Honing is a procedure done in an engine liner or cylinder bore to __

    grind the surface with abrasive stone

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    問題一覧

  • 1

    When a flash-type evaporator is to be secured for an extended period of time, the entire unit should be drained, cleaned

    vented to the atmosphere

  • 2

    A dirty intercooler on an air compressor will cause

    increased motor current

  • 3

    A leakage or loss of pressure past the piston into the crankcase is __

    blow-by

  • 4

    When a diesel engine emits blue exhaust smoke this is due to

    excessive cylinder lubrication

  • 5

    Boiler firesides must be kept free of soot accumulations because

    soot insulates the boiler heating surfaces

  • 6

    A suitable location for the installation of an impulse type steam trap would be in the

    horizontal run of drain line from the lowest point at the outlet of the heat exchanger

  • 7

    What could cause a flame failure in a boiler?

    flame eye not properly aligned

  • 8

    If the fuel oil temperature going to the burners is too low, the __

    boiler will produce heavy black smoke

  • 9

    When maneuvering, you discover heavy smoke coming from the turbocharger casing. You should

    notify the bridge and ask to shut the engine down

  • 10

    What lifting gear is used to remove the cylinder head of an diesel generator after disconnecting it from the engine?

    chain block

  • 11

    Excessive lube oil consumption in a reciprocating air compressor is an indication of

    worn or broken piston rings

  • 12

    One cause of leaky valves in an air compressor may be

    too much suction pressure

  • 13

    The precautionary things to be done to avoid electric shock while working onboard are ____. I. Work on dry places. II. Use rubber gloves and shoes. III. Avoid working on hot places

    I and II

  • 14

    Very small irregularities on the seat and disk of a globe valve may be manually repaired with the valve in place by the process known

    lapping

  • 15

    What do you call the process of putting grinding compound between an exhaust valve and valve seat and rotating it in back and forth motion to restore a good fit on both the seat and the valve?

    lapping

  • 16

    A clogged fuel oil filter could result in:

    any of the above

  • 17

    The factors that determine the service life of packing in a pump will include which of the following conditions?

    all of the above

  • 18

    When there is crackling noise coming from a centrifugal pump housing this is an indication of __

    excessive suction lift

  • 19

    If a refrigeration system were short of refrigerant, the condition would result in __

    continuous running of the compressor

  • 20

    Dark exhaust gas from the engine is caused by __

    engine overload

  • 21

    What prevents the steam pressure from exceeding allowable working pressure

    safety valve

  • 22

    If the flow of water from a centrifugal pump is allowed to be stopped by closing the discharge valve while the pump continues to run for an indefinite period, the __

    liquid may overheat and vaporizew

  • 23

    Before commencing work inside a bilge tank what test are you require to before entering

    test the air inside the tank using gas analyzer

  • 24

    What is a lantern ring?

    a part of the packing used to prevent air lackage on a centrifugal pump shaft

  • 25

    Which of the additives listed is used to reduce the foaming tendency of lube oil?

    suppressants

  • 26

    Malfunctioning of the feed pump to deliver feed water to an auxiliary boiler could be caused by __

    grounded probes on the water level control

  • 27

    Why is there a relief valve installed on the boiler burner fuel service system?

    to protect the system from high discharge pressure

  • 28

    Air leaking in the flash type distilling plant could occur through __

    all of the options

  • 29

    A diesel engine fails to start. What should not be the cause?

    water leaking into cylinder

  • 30

    If a centrifugal pump delivers insufficient discharge pressure due to worn wearing rings, what corrective actions is called for

    replace the rings

  • 31

    What is the small end bearing in 4 stroke diesel engines?

    a bearing fitted on the connecting rod where the piston pin rotates

  • 32

    Why is there a relief valve installed on the boiler burner fuel service system?

    to protect the system from high discharge pressure

  • 33

    Which of the condensers listed is cooled by seawater?

    main condenser

  • 34

    What clearance is important in main condenser pumps to insure adequate discharge pressures?

    impeller wearing ring and casing wearing ring

  • 35

    Is it advisable to clean and reuse paper LO cartridge filters?

    No

  • 36

    A leakage first-stage unloader ina n air compressor will result in __

    all of the above

  • 37

    A leakage first-stage unloader ina n air compressor will result in __

    an abnormally low intercooler pressure

  • 38

    Heavy soot accumulations in an auxiliary boiler could be caused by ___

    improper burner maintenance

  • 39

    To connect two lengths of pipe previously set in place, you should use a pipe

    union

  • 40

    What type cooling medium is use on modern 4 stroke diesel generators to cool atomizer nozzles?

    cooling water

  • 41

    If a refrigeration system is overchaged with refrigerant, one result will be __

    water pressure will lower continually to shut off head

  • 42

    The nut of the bowl assembly of a purifier is confirmed tight by means of ___

    aligned marks on the body and nut

  • 43

    The noise created by condensate in steam lines when opening fuel oil storage tank heater is called ___

    water hammer

  • 44

    Combustion gases can leak into the fire room through _

    soot blower swivel tube packing glands

  • 45

    Badly leaking refrigeration compressor discharge valves will cause

    constant running of the compressor

  • 46

    High salinity can be reduced and water chemistry controlled in a steaming boiler by adding caustic soda and phoshate and then

    using continuous blowdown

  • 47

    What type of work permit is needed when working inside to clean the boiler tubes the boiler?

    enclose space entry permit

  • 48

    One cause of diesel engine surging can be a result of

    njection pump fuel rack binding or sticking

  • 49

    The feed water in an auxiliary boiler should be chemically tested daily for alkalinity and

    chloride

  • 50

    If the foundation bolts of a reciprocating air compressor are loose, which of the conditions below will occur?

    the compressor will vibrate

  • 51

    A suspected leak in an operating fuel oil heating coil is normally confirmed by __

    checking the drain inspection tank

  • 52

    Which of the following statement is true about Lubricating oil coolers?

    the pressure of oil less than the cooling water

  • 53

    When there is enough supply of fue oil and engine failed to turn over after air starting valve has opened, what could be the cause?

    insufficient air pressure in the tank

  • 54

    What is the common cause of lube oil purifier overflow?

    all of these

  • 55

    Dark exhaust gas from the engine is caused by __

    engine overload

  • 56

    What corrective action is required when the boiler water test result show any hardness?

    none

  • 57

    Honing is a procedure done in an engine liner or cylinder bore to __

    grind the surface with abrasive stone