High Pressure Boilers Quiz: Trivia Test!

49 Questions | Total Attempts: 4866

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High Pressure Boilers Quiz: Trivia Test!

Many different industries use High-Pressure boilers for central heating systems and many other applications. The water in boilers is used to produce steam which generates energy for other processes. High-pressure boilers require specialized care to operate. Do you think you have what it takes to operate them and understand their use? Take up this test to find out!


Questions and Answers
  • 1. 
    The steam space of a boiler must be large enough to?
    • A. 

      Accomadate all the steam riser tubes

    • B. 

      Seperate the water from the steam

    • C. 

      Accommodate a steam seperator

    • D. 

      Keep the steam pressure down

  • 2. 
    All parts of the boiler exposed to fire or flue gases must be covered by?
    • A. 

      Blanket isulation

    • B. 

      Metal cladding

    • C. 

      Refractory

    • D. 

      Water

  • 3. 
    A steam boiler should be compact in design in order to:
    • A. 

      Allow a larger steam generatin capacity

    • B. 

      Reduce the size of the feedwater supply line

    • C. 

      Reduce the size of the stack

    • D. 

      Reduce building costs

  • 4. 
    Power boilers usually require ______ blowdown valves.
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 5. 
    High-pressure boilers operate at pressures above:
    • A. 

      145.03 PSI

    • B. 

      72.51 PSI

    • C. 

      362.5 PSI

    • D. 

      14.69 PSI

  • 6. 
    What is a major disadvantage of a firebox boiler?
    • A. 

      First cost is relatively high

    • B. 

      Cleaning and inspection can be difficult

    • C. 

      It is not very compact

    • D. 

      It has a low heat transfer efficiency

  • 7. 
    For what use was the wetback scotch back boiler primarily designed for ?
    • A. 

      Very high capacity electric generation

    • B. 

      Marine service

    • C. 

      Building heating service

    • D. 

      Railway service

  • 8. 
    What type of boiler is built ready for installation?
    • A. 

      Locomotive boiler

    • B. 

      Scotch marine boiler

    • C. 

      HRT BOILER

    • D. 

      Packaged boiler

  • 9. 
    Hot water supply boilers are not considered to be heating boilers unless the operating temperature exceeds:
    • A. 

      122 deg f

    • B. 

      392 deg f

    • C. 

      347 deg f

    • D. 

      200 deg f

  • 10. 
    What is increased to augment the heat transfer capability in a fire tube boiler?
    • A. 

      Diameter of tubes

    • B. 

      Number of tube passes

    • C. 

      Thinner walled tubes

    • D. 

      Boiler feed water temp.

  • 11. 
    High-pressure water tubes:
    • A. 

      Are always smaller than firetubes

    • B. 

      Can be of verious straight for bent configurations

    • C. 

      Are always straight

    • D. 

      Require pumps for circulation

  • 12. 
    The bent tube boiler design allows the tubes to be attached radially on the outside of the?
    • A. 

      Firebox

    • B. 

      Economizer

    • C. 

      Air preheater

    • D. 

      Drum

  • 13. 
    Since furnace pressure is often positive in a positive in a packaged water tube boiler, to prevent flue gas leakage:
    • A. 

      An induced draft fan is incorporated

    • B. 

      An economizer is used

    • C. 

      Smoke stacks are made taller

    • D. 

      A steel casing forms a seal for the furnance

  • 14. 
    A problem with a D type water tube packaged boiler is?
    • A. 

      Ceiling hieght requirements

    • B. 

      Excessive vibration

    • C. 

      Refractory maintenance for the external furnance

    • D. 

      Poor water circulation

  • 15. 
    Which of the following is not an advantage for the low-pressure water tube and tubular type boilers?
    • A. 

      Very short warm up period required

    • B. 

      Bent or coil tube design avoids thermal stress

    • C. 

      Rapid response to fluctuating loads

    • D. 

      Lower initial costs

  • 16. 
    The main disadvantage of an electric boiler is that:
    • A. 

      They are not very compact

    • B. 

      Vibrator requires special footings

    • C. 

      Input energy cost is high

    • D. 

      Energy transfer efficiency is low

  • 17. 
    Operating voltage for an electrode type boiler can be as high as _____ volts.
    • A. 

      25,000

    • B. 

      16,000

    • C. 

      1000

    • D. 

      50,000

  • 18. 
    The amount of steam produced by an electrode type boiler depends on the?
    • A. 

      Voltage supplied to the elements

    • B. 

      Level of water in the basket

    • C. 

      Number of heating elements engaged

    • D. 

      Number of baffles

  • 19. 
    A ______ is not required on an electrode type electric boiler.
    • A. 

      Thermostat

    • B. 

      Water pump

    • C. 

      Basket

    • D. 

      Low water cutoff

  • 20. 
    An immersion electric boiler capacity can be as high as:
    • A. 

      1300 hp

    • B. 

      1700 hp

    • C. 

      6700 hp

    • D. 

      2700 hp

  • 21. 
    Control of the immersion heater boiler is done by turning on and off the:
    • A. 

      Feedwater pump

    • B. 

      Fuel supply

    • C. 

      Number of heating elements

    • D. 

      Power supply

  • 22. 
    The reason for the use of steam is to allow the maximum quantity of heat to be put into well with the _______quantity of injected fluid.
    • A. 

      Minimum

    • B. 

      Maximum

    • C. 

      Most

    • D. 

      Super

  • 23. 
    Combustion air is fed at three elevations of the furnace primary secondary and __________
    • A. 

      Upper

    • B. 

      Lower

    • C. 

      Tertiary

    • D. 

      After

  • 24. 
    If the black liquior is too __________ it could result in an explosion.
    • A. 

      Strong

    • B. 

      Thin

    • C. 

      Weak

    • D. 

      Thick

  • 25. 
    The vibration also serves to aid combustion by _________ out the bed fo burning biomass.
    • A. 

      Shacking

    • B. 

      Leveling

    • C. 

      Turning

    • D. 

      Moving

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