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Sulphur in coal results in

A. Corroding air heaters

B. Spontaneous combustion during coal storage

C. Facilitating ash precipitation

D. All of the above

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  1. Hard coke is used in
  2. Superheating of steam is done at
  3. The number of drums in Benson steam generator is
  4. The amount of water evaporated in kg per kg of fuel burnt is called
  5. The diameter of fire tube of Cornish boiler compared to its shell is
  6. Steam in water tube boiler as compared to fire tube boiler
  7. An air preheater
  8. The difference of supersaturated temperature and saturation temperature at that pressure is called
  9. The equivalent evaporation is defined as
  10. The fire tubes in, a Coarran and Scottish marine boiler are
  11. At critical point, i.e. p = 225.65 kg/cm², the latent enthalpy of vaporisation is
  12. The maximum efficiency of a De-Laval turbine is (where α = Nozzle angle)
  13. All steam engines work on
  14. The ratio of the workdone on the blades per kg of steam to the total energy supplied per stage per kg…
  15. The numbers of fire tubes in a Cochran boiler are
  16. The specific volume of steam with increase in pressure decreases
  17. In an ideal impulse turbine, the
  18. A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio…
  19. For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine…
  20. The behaviour of coal in a furnace is determined by
  21. Pick up the wrong statement about water tube boiler in comparison to fire tube boilers
  22. Over fire burning is the phenomenon of
  23. The fire tubes in a Cochran boiler are
  24. Thermal equilibrium means that the flow of steam is
  25. A device used to increase the temperature of saturated steam without raising its pressure, is called
  26. A steam nozzle converts
  27. When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as
  28. Blading efficiency is also known as
  29. If the critical pressure ratio for steam is 0.546, then the steam is initially
  30. The diameter of fire tubes in Cochran boiler is of the order of