Stationary Engineer Practice Quiz

190 Questions | Total Attempts: 10888

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Stationary Engineer Practice Quiz - Quiz

Do you wish to be a Stationary Engineer? Get ready to take this quiz on Stationary Engineer Class 3 Examination that is here for you. A compendium of questions that should help with any licensing exam. This quiz is going to be educational and interesting as well at the same time. Would you be able to get a score above 70 on this quiz? You are an expert if you are able to do so. Let's see how well you perform. Best of luck to you!


Questions and Answers
  • 1. 
    1. The lowest visible water level in the gauge glass is ___ above the top of the boiler tubes on a scotch marine boiler.
    • A. 

      2"

    • B. 

      3"

    • C. 

      12"

    • D. 

      6"

  • 2. 
    1. The three classes of feedwater pumps are _______________, _______________, and _____________.
    • A. 

      Reciprocating, centrifugal, and rotary

    • B. 

      Reciprocating, centrifugal, and screw

    • C. 

      Reciprocating, scroll, and centrifugal

    • D. 

      Positive displacement, reciprocating, and centrifugal

  • 3. 
    1. The minimum size for the connection in between the gauge glass and the water column is _____.
    • A. 

      3/8"

    • B. 

      3/4"

    • C. 

      1/2"

    • D. 

      1/4"

  • 4. 
    1. _____________ is the replacement for refrigerant R-22.
    • A. 

      R-410a

    • B. 

      R-134a

    • C. 

      R-401a

    • D. 

      R-123

  • 5. 
    1. A refrigerant system using R-134a is running at 148 psi on the discharge and 16psi on the suction. What is the compression ratio of the compression?
    • A. 

      9.2:1

    • B. 

      5.3:1

    • C. 

      10:1

    • D. 

      8:1

  • 6. 
    1. When using a lift lever to manually test a safety valve, the boiler pressure must be at least _____ percent of the safety valve setpoint.
    • A. 

      80

    • B. 

      75

    • C. 

      70

    • D. 

      90

  • 7. 
    1. Unlike an infrared scanner, the ultraviolet scanner is no affected by the light given off by hot _________________.
    • A. 

      Flames

    • B. 

      Plasma

    • C. 

      Refractories

    • D. 

      Gasses of combustions

  • 8. 
    1. The _________ __________ and _____________ _________ _______ sense heat to prove flame in the boiler.
    • A. 

      Stack switch and rectifying flame rod

    • B. 

      Flue sensor, infra red sensor

    • C. 

      Stack switch, and infrared sensor

    • D. 

      Flue sensor, rectifying flame rod

  • 9. 
    1. A _______________ ____________ air handler unit operates at the rated capacity at all times.
    • A. 

      Variable Volume

    • B. 

      Constant Volume

    • C. 

      Single Zone

    • D. 

      Multi-Zone

  • 10. 
    1. If a bulge in a boiler is not down more than ______ of its length, it should be left alone unless the metal is too badly burned.
    • A. 

      10%

    • B. 

      2%

    • C. 

      1%

    • D. 

      5%

  • 11. 
    1. A dry pipe on a Scotch Marine Boiler is used to remove _____________ from the steam prior to leaving the boiler.
    • A. 

      Moisture

    • B. 

      Oxygen

    • C. 

      Air

    • D. 

      CO2

  • 12. 
    1. The ____________ _________ mechanism on the high limit control call attention if the ________________ control has malfunctioned.
    • A. 

      Automatic reset; operating

    • B. 

      Automatic reset; burner

    • C. 

      Manual reset; operating

    • D. 

      Manual reset; burner

  • 13. 
    1. An ___________________ Ring is on method used to support the Morrison Tube in a Scotch Marine Boiler.
    • A. 

      Adamson

    • B. 

      Morrison

    • C. 

      Smithers

    • D. 

      Faulkner

  • 14. 
    1. A 10 x 5x 15 duplex reciprocating pump has a steam cylinder diameter of ____inches, has a water cylinder diameter of _____ inches, and a long stroke of _____inches.
    • A. 

      10, 5, 15

    • B. 

      15, 5, 10

    • C. 

      5,10, 15

    • D. 

      20, 10, 30

  • 15. 
    1. Boiler stop valves over 2” diameter must be ______________-___________- and -_________.
    • A. 

      Packing Gland and Wheel

    • B. 

      Outside Screw and Yolk

    • C. 

      Outside Stem and Wheel

    • D. 

      Outside Stem and Yolk

  • 16. 
    1. A centrifugal pump uses a ________ to convert velocity energy to pressure energy.
    • A. 

      Impeller

    • B. 

      Volute

    • C. 

      Guide vanes

    • D. 

      Propeller

  • 17. 
    1. A 26” x 48” x rectangular Duct is replaced with a round Duct. What is the minimum diameter of the round Duct to provide the same area?
    • A. 

      39.87'

    • B. 

      19.93"

    • C. 

      35.33"

    • D. 

      17.66"

  • 18. 
    1. A ________ _______ AHU supplies conditioned air to only one area of the building.
    • A. 

      Variable Volume

    • B. 

      Constant Volume

    • C. 

      Single Zone

    • D. 

      Multi Zone

  • 19. 
    1. The pipes connecting the water column to the boiler must be a minimum diameter of ____ inch.
    • A. 

      2"

    • B. 

      2.5"

    • C. 

      1"

    • D. 

      3/4"

  • 20. 
    1. The two types of electric boilers are _______________ and ______________.
    • A. 

      Resistance & electrode

    • B. 

      Resistance & capacitance

    • C. 

      Arc Tube & electrode

    • D. 

      Electrode & capacitance

  • 21. 
    1. There is no _____________ _________ ____ _________________ above the critical pressure, because water and steam have the same density.
    • A. 

      Specific Heat of Atomization

    • B. 

      Latent Heat of vaporization

    • C. 

      Specific heat of vaporization

    • D. 

      Latent heat of atomization

  • 22. 
    1. ______ ________________ are used extensively in pulverized-fuel-burning plants in order to keep heat-absorbing surfaces free from soot and ash buildup.
    • A. 

      Soot Blowers

    • B. 

      Stack Scrubbers

    • C. 

      Chain Grate Stokers

    • D. 

      Tube puncher

  • 23. 
    1. ______________ is used on high pressure steam plants to absorb oxygen. It’s is not typically used on low pressure steam plants because it is a slow reaction to absorb oxygen.
    • A. 

      Deaerator

    • B. 

      Hydrazine

    • C. 

      Amines

    • D. 

      Oxygen scavengers

  • 24. 
    1. According to ASME code a HTHW boiler is any boiler that operates above ____________ or ____________.
    • A. 

      150PSI, 200 Deg. F

    • B. 

      150 PSI, 100 Deg. C

    • C. 

      160PSI, 250Deg.F

    • D. 

      14.7 PSI, 212 Deg. F

  • 25. 
    1. The waste products from a sugar cane are used in a _______________ plant.
    • A. 

      Bagasse

    • B. 

      Black liquor

    • C. 

      Red liquor

    • D. 

      Saccarine refinery