An economiser is installed in a boiler primarily to

A. Superheat the steam

B. Reduce fuel consumption

C. Increase steam pressure

D. All of these

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. Cut-off ratio is the ratio of
  2. In water tube boilers
  3. Duplex feed pumps are used in small steam boilers. These operate on the principle of
  4. The fire tubes in a Cochran boiler usually have _________ diameter.
  5. The length of Cornish boiler varies from
  6. Which of the following is a fire tube boiler?
  7. The maximum discharge of steam through a convergent-divergent nozzle depends upon
  8. The effect of super-saturation is that the
  9. Which is not correct statement about pulverised fuel firing?
  10. Which of the following boilers is best suited to meet fluctuating demands?
  11. A stage, in reaction turbine, is represented by
  12. The flow of steam is supersonic
  13. The function of an eccentric rod is
  14. The state of vapour under saturation condition is described by
  15. A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the…
  16. In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,
  17. Clearance ratio is the ratio of
  18. When the inlet pressure of steam is equal to the exit pressure, then
  19. Which of the following gases has the highest calorific value?
  20. The friction in the nozzle __________ exit velocity of steam.
  21. When steam after doing work in the cylinder passes into a condenser, the engine is said to be a
  22. The latent heat of steam with increase of pressure
  23. Lancashire boiler is a
  24. When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor…
  25. In water wall furnace, the heat is transferred to the water walls by
  26. The crown of the fire box is made hemispherical in order to
  27. Caking coals are those which
  28. The velocity of flue gases (V) through the chimney under a static draught of (H') metres is given by
  29. If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined…
  30. By compounding the expansion of steam in two or more cylinders, the length of stroke