Boiler Exam Class 1a

73 Questions | Total Attempts: 3268

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Boiler Exam Class 1a

For you to adequately understand course it is important to ensure that you take up quizzes that test out what you have learnt so far. The Boiler Exam review quiz from Class 1a below is perfect for that. Give it a shot and see if you need to get a tutor before the finals.


Questions and Answers
  • 1. 
    What is the unit called that controls the starting and stopping of the burner by sensing the temperature of the water in a hot water boiler?
    • A. 

      Aquastat

    • B. 

      Mamoneter

    • C. 

      Flow control valve

    • D. 

      Vapor stat

  • 2. 
    3-1    the temperature of the water in a hot water boiler system can be controlled by
    • A. 

      The fuel air ratio that is forced to the chimney or stack.

    • B. 

      The two types of circulation used in the system

    • C. 

      Aquastats or a remote temperature monitoring system

    • D. 

      The diverter fittings

  • 3. 
    4-1       in addition to a    code    safety relief valve what other safety device should be installed on a hot   water heating boiler
    • A. 

      A low water fuel cutoff

    • B. 

      A feed water valve

    • C. 

      A feed water regulator

    • D. 

      A purge valve

  • 4. 
    5-1     what removes air from a hot water boiler system
    • A. 

      Anti siphon

    • B. 

      Baffles inside the the boiler

    • C. 

      Flow control

    • D. 

      Air control

  • 5. 
    6-1     if a circulating pump fails what valve can be manual opened to provide hot water to the heating units through natural circulation
    • A. 

      Flow control valves

    • B. 

      Safty relief valve

    • C. 

      Back flow preventer valve

    • D. 

      Check valve

  • 6. 
    10-1     in a   steam boiler system, the unit that turns the burner on and off based on steam pressure is the
    • A. 

      Pressure control

    • B. 

      Potentiometer

    • C. 

      Manometer

    • D. 

      Altimeter

  • 7. 
    11-1      gauge pressure plus 14.7 is called what
    • A. 

      Atmospheric pressure

    • B. 

      Operating pressure

    • C. 

      Absolute pressure

    • D. 

      Positive pressure

  • 8. 
    13-1    when a safety valve opens and closes rapid, it is referred to as
    • A. 

      Popping

    • B. 

      Chattering

    • C. 

      Pressuring

    • D. 

      Huddling

  • 9. 
    14-1     furnace explosins are caused by a build up  of conbustible gases, or vapors in the furnace.   what is the term used to remedy this condition
    • A. 

      Draft diverting

    • B. 

      Modulating

    • C. 

      Purging

    • D. 

      Hudding

  • 10. 
    14-1    furnace explosions are caused by a build   up of conbustible gases   or vapors in the furnace..   what is the term used to remedy this condition
    • A. 

      Draft diverting

    • B. 

      Modulating

    • C. 

      Purging

    • D. 

      Huddling

  • 11. 
    15-1    when steam on a steam boiler system is blowing into the vacuum pump or condensate tank,   what could be the problem?
    • A. 

      Saftety valve malfunction

    • B. 

      Automatic feedwater malfunction

    • C. 

      steam gauge malfunction

    • D. 

      Steam trap malfunction

  • 12. 
    16-1    the unit that shuts off the burner in the event of low water is the 
    • A. 

      Stop and check valve

    • B. 

      Safty valve

    • C. 

      Low water fuel cut off

    • D. 

      Boiler feed stop valve

  • 13. 
    18-1     in a steam boiler system what is the term used for replacing the water that has been lost by blowing down the boiler or through leaks in the system
    • A. 

      Equalizing line

    • B. 

      Water hammer

    • C. 

      Make up water

    • D. 

      Water differential

  • 14. 
    21-1    what area of the boiler shall be computed as heating surface
    • A. 

      The total area of the fireside and water side

    • B. 

      The water side minus the fireside areas

    • C. 

      The surface exposed to the products of combustion

    • D. 

      The total area of the steam space where evaporation takes place

  • 15. 
    26-1     the  evaporation of 34.5 pounds of water per hour from and at a temperature of 212 degrees f    is defined as
    • A. 

      One boiler horsepower

    • B. 

      The latent heat of fusion

    • C. 

      The factor of evaporation

    • D. 

      An evaporaton test

  • 16. 
    27-1     when a discharge pipe is installed on a safety valve,   the cross sectional are shall:
    • A. 

      Be three times the full area of the valve outlet

    • B. 

      Be not less than the full area of the valve outlet

    • C. 

      Be tow times the full area of the valve outlet

    • D. 

      Be reduced to one pipe size lower

  • 17. 
    29-1     on a one pipe    steam heating boiler system, what is used to distribute steam and also to return the condensate
    • A. 

      The same pipe

    • B. 

      The circulating pump

    • C. 

      The bypass line

    • D. 

      The back flow preventor valve

  • 18. 
    35-1     on a fire tube boiler, the water
    • A. 

      Surrounds the tubes

    • B. 

      Is inside the tubes

    • C. 

      Is inside and outside the tubes

    • D. 

      There is no water in a fire tube boiler

  • 19. 
    37-1    when two valves are used on the bottom blowdown line of a steam boiler, what valve is located closest to the boiler shell
    • A. 

      The quick opening valve

    • B. 

      The non return valve

    • C. 

      The ball valve

    • D. 

      The check valve

  • 20. 
    43-1    in some heating unit systems , the circulatng pump  is controlled by
    • A. 

      Thermostat

    • B. 

      Water pressure

    • C. 

      Heating unit pressure

    • D. 

      Water head

  • 21. 
    44-1    the capacity of a safety valve used on a steam boiler is measured in 
    • A. 

      Pounds of steam shown on the steam gauge

    • B. 

      The amount of steam that can be discharged in one hour

    • C. 

      Pounds of steam per minute

    • D. 

      The time it takes to bring the boiler up to the working pressure

  • 22. 
    45-1    in a steam boiler system, the condensate is removed from the heating equipment by a 
    • A. 

      Globe valve

    • B. 

      Stainer

    • C. 

      Steam trap

    • D. 

      Pipe reducer

  • 23. 
    47-1    the control designed as a safety backup, should the pressure control fail is
    • A. 

      Modulating pressure control

    • B. 

      High limit control

    • C. 

      End switch

    • D. 

      Sail switch

  • 24. 
    48-1    how does a pressure control attached to the steam space of a boiler control the burner operation
    • A. 

      Burner starts on pressure decrease, and stops on pressure increase

    • B. 

      Starts burner on pressure increase

    • C. 

      Stops burner on pressure decrease

    • D. 

      Controls (or stops) the burner on low incoming fuel pressure

  • 25. 
    49-1    the purpose of a safety valve on a steam boiler is to
    • A. 

      Regulate or control an even amount of steam pressure

    • B. 

      Safely return the condensate back to the boiler

    • C. 

      Prevent the pressure in a steam boiler from exceeding its maximum allowable working pressure

    • D. 

      Sheck the safety of the steam gauge

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