Which of the following statement is wrong?

A. The factor of evaporation for all boilers is always greater than unity.

B. The amount of water evaporated in kg per kg of fuel burnt is called equivalent evaporation from and at 100° C.

C. The ratio of heat actually used in producing the steam to the heat liberated in the furnace is called boiler efficiency.

D. None of the above

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

You can do it
  1. A binary vapour plant consists of
  2. With increase in load, convection superheater has
  3. The steam enters the nozzle at a
  4. The flow through a nozzle is regarded as
  5. In forced recirculation type boiler,
  6. For maximum discharge through a chimney, the condition is that height of hot gas column producing the…
  7. Rateau turbine is
  8. The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the…
  9. Blading efficiency is also known as
  10. The shell of the Cochran boiler is made hemispherical
  11. When the circulation of water, in a boiler, is by convection currents which are set up during the heating…
  12. The maximum discharge through a chimney occurs when the height of chimney is
  13. In a boiler, the heat is lost
  14. The device attached to the steam chest for preventing explosions due to excessive internal pressure…
  15. Thermal efficiency of well maintained boiler will be of the order
  16. When the cross-section of a nozzle increases continuously from entrance to exit, it is called a
  17. The function of injector used in small capacity boilers is to
  18. Locomotive boiler is of the following type
  19. The equivalent evaporation is defined as
  20. The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle)
  21. One kg of steam sample contains 0.8 kg dry steam; Its dryness fraction is
  22. A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio…
  23. Tertiary air is the air used to
  24. Green coal, in order to be burnt, must be
  25. A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls…
  26. The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity…
  27. The efficiency of a boiler is defined as
  28. The working pressure range for a LaMont boiler is
  29. The function of a piston in a steam engine is
  30. The function of a crosshead is to guide motion of the _________ and to prevent it from bending.