The friction present between the steam and the nozzle surfaces reduces the heat drop by

A. 10 to 15 %

B. 15 to 25 %

C. 25 to 40 %

D. 40 to 60 %

Related Questions

  1. The water tubes in a Babcock and Wilcox boiler are
  2. For combustion of a fuel, following is essential
  3. The heat loss in a boiler takes place in the form of
  4. The diagram efficiency is the ratio of
  5. Which of the following is a water tube boiler?
  6. The purpose of governing in steam turbines is to
  7. In recuperative air preheaters, the heat is transferred
  8. The efficiency of steam turbines may be improved by
  9. A device used to heat feed water by utilising the heat in me exhaust flue gases before leaving through…
  10. The difference between Cornish boiler and Lancashire boiler is that
  11. The fire tubes in a Cochran boiler usually have _________ diameter.
  12. In locomotives, the draught is produced by
  13. In order to reduce the rotor speed of an impulse turbine, the method employed is
  14. The heat balance sheet for the boiler shows the
  15. Sulphur in coal results in
  16. The critical pressure ratio for initially superheated steam is __________ as compared to initially dry…
  17. The maximum discharge of steam through a convergent-divergent nozzle depends upon
  18. The effect of bleeding is that
  19. The coal requirement per kW hour generation in the thermal power plant is of the order of
  20. Relative percentage of heat absorbed through the heat transfer of (i) Furnace water wall (ii) Boiler…
  21. Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication…
  22. The safety valve on boiler drum compared to safety valve on superheater is set at
  23. The ratio of the workdone on the blades per kg of steam to the total energy supplied per stage per kg…
  24. A nozzle is said to be a convergent nozzle
  25. In a single acting steam engine
  26. When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor…
  27. Blow off cock in a boiler is used to
  28. The latent heat of steam with increase of pressure
  29. The diameter of a cylindrical shell of a Scotch marine boiler varies from
  30. The indicated thermal efficiency is defined as the

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