Sopeec

  1. Which one of the following factor influences the natural circulation in a watertube boiler? A. The height of the economizer above the bottom of air heater
    B. The height of the economizer above the bottom of boiler floor
    C. The height of the steam drum above the bottom drum or header
    D. The height of the superheater header above the reheater header
    C. The height of the steam drum above the bottom drum or header
  2. For top supported boilers, the steam drum is _________________ .



    C. hung from the top steelwork.
  3. CSA B51 Codes states that steam boilers not continuously attended by a certified operator shall be equipped with ________ low-water fuel cut-off device(s).



    D. one
  4. The high gas pressure switch contacts of a steam boiler are normally closed whenever the main gas line pressure is ______ preset pressure.



    B. below a
  5. 5. For the same required air flow, an induced draft (ID) fan must have a larger capacity than a forced draft (FD) fan because the ID fan must handle ___________________ .



    A. a larger volume of gases
  6. 6. A three-element feedwater control system is an improvement over the two-element control system by adding ____________ as the third element.



    C. water flow
  7. 7. Based on the ASME Codes, the water used for the hydrostatic test of a steam boiler must not exceed _______ °C.



    B. 55
  8. 8. During the regeneration of a mixed-bed demineralizer, the backwash process is used to ______________ .



    A. separate the anion and cation resin beads
  9. 9. When the liquid travels through the volute casing of a centrifugal pump to the pump discharge, the liquid velocity decrease and its ________________ .



    C. kinetic energy is converted into pressure energy
  10. 10. Based on the ASME Codes, area of replacement means that adequate reinforcement of the vessel requires ___________________ to be attached near the openings as was removed to create the opening.



    C. an equal amount of excess material
Author
PowerPrep
ID
317620
Card Set
Sopeec
Description
Sopeec
Updated