For a Parson's reaction turbine, if α₁ and α₂ are fixed blade angles at inlet and exit respectively and β₁ and β₂ are the moving blade angles at entrance and exit respectively, then

A. α₁ = α₂ and β₁ = β₂

B. α₁ = β₁ and α₂= β₂

C. α₁ < β₁ and α₂ > β₂

D. α₁ = β₂ and β₁ = α₂

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

You can do it
  1. The average operating pressure of Benson boiler is
  2. The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or…
  3. The temperature of flue gases at air heater outlet should be
  4. The main object of a boiler trial is
  5. Which of the following statement is correct?
  6. A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls…
  7. The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity…
  8. The diameter of internal flue tubes in a Lancashire boiler compared to its shell is
  9. A binary vapour plant consists of
  10. The maximum discharge of steam through a convergent-divergent nozzle depends upon
  11. Expansion ratio is the ratio of
  12. Desecration of feed water is carried out because it reduces
  13. A closed vessel made of steel and used for the generation of steam is called a
  14. The amount of water evaporated in kg per kg of fuel burnt is called
  15. Water tube boilers are those in which
  16. In a uniflow engine
  17. When the circulation of water, in a boiler, is by convection currents which are set up during the heating…
  18. Carbonisation of coal is the process of
  19. The length of Lancashire boiler varies from
  20. In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s…
  21. When the cross-section of a nozzle increases continuously from entrance to exit, it is called a
  22. A double acting steam engine with a cylinder diameter of 190 mm and a stroke of 300 mm has a cut-off…
  23. The water tubes in a simple vertical boiler are
  24. If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton's…
  25. Willians line for the steam engine is a straight line relationship between the steam consumption per…
  26. A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine…
  27. Boiler stays are used to
  28. In regenerative air preheaters, the heat is transferred
  29. The object of producing draught in a boiler is
  30. The principal function of a stop valve is to