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In water tube boilers

A. Water passes through the tubes which are surrounded by flames and hot gases

B. The flames and hot gases pass through the tubes which are surrounded by water

C. Forced circulation takes place

D. None of these

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  1. The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised…
  2. Fire tube boilers are
  3. Which of the following statement is correct?
  4. Sublimation region is the region where
  5. Willians line follows the law (where b = A constant representing the shape of the Willians line, a =…
  6. In recuperative air preheaters, the heat is transferred
  7. The amount of water evaporated from feed water at _________ into dry and saturated steam at 100°…
  8. The density of supersaturated steam is about __________ that of the ordinary saturated vapour at the…
  9. The function of a piston in a steam engine is
  10. The compounding of turbines is done in order to
  11. Which of the following is steam dial?
  12. The number of water level indicators in a boiler are generally _________ in number.
  13. The critical pressure at which latent heat of vaporisation is zero is
  14. The safety valve at superheater as compared to drum safety valve setting is set at
  15. The difference between Cornish boiler and Lancashire boiler is that
  16. The ratio of total useful heat drop to the total isentropic heat drop, is called
  17. In a nozzle, whole frictional loss is assumed to occur between
  18. The function of injector used in small steam plants is to
  19. Spontaneous combustion is a phenomenon in which
  20. Efficiency of a thermal cycle increases by
  21. Alkaline pyrogallate is used in Orsat's apparatus for absorption of
  22. The performance of a boiler is measured by the
  23. The crown of the fire box is made hemispherical in order to
  24. The friction in the nozzle __________ exit velocity of steam.
  25. The fittings mounted on the boiler for its proper and safe functioning is a
  26. The draught produced by a steam jet issuing from a nozzle placed in the ash-pit under the fire grate…
  27. The rate of steam produced in Benson boiler is
  28. For maximum discharge through a chimney, the condition is that height of hot gas column producing the…
  29. The relative heat absorption for successively added equal areas of boiler convection heating surfaces
  30. A steam turbine, in which a part of the steam after partial expansion, is used for process heating and…