Over fire burning is the phenomenon of

A. Supply of excess, air

B. Supply of excess coal

C. Burning CO and unburnts in upper zone of furnace by supplying more air

D. Fuel bed firing

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  1. The artificial draught is produced by
  2. In a boiler, the heat is lost
  3. The expansion of steam in a nozzle follows
  4. Thermal efficiency of a thermal power plant is of the order of
  5. In a reaction turbine when the degree of reaction is zero, then there is
  6. Calorific value of coal is of the order of
  7. The number of water level indicators in a boiler are generally _________ in number.
  8. The expansion of steam, as it flows over the blades in reaction turbine, represents
  9. Mechanical equivalent of heat for 1 kcal or Joule's equivalent is equal to
  10. In accelerated circulation type boiler
  11. Blow off cock in a boiler is used to
  12. Which of the following statement is correct for a compound steam engine?
  13. The draught may be produced by a
  14. The shell diameter and length of locomotive boiler are
  15. In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace…
  16. Rateau turbine is
  17. The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure…
  18. In order to compare the capacity of boilers, the feed water temperature and working pressure are taken…
  19. The value of diagram factor depends upon
  20. The coal requirement per kW hour generation in the thermal power plant is of the order of
  21. The compounding of turbines is done in order to
  22. The ultimate analysis of fuel lists
  23. Stage efficiency is also known as
  24. In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15…
  25. When the nozzle operates with the maximum mass flow, the nozzle is said to be
  26. Tertiary air is the air used to
  27. The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is
  28. Adiabatic process is
  29. The turbine blades are
  30. A regenerative steam cycle renders