Steam turbine | Steam turbine Objective Type Questions and answers


6. There is enthalpy drop only in.......blades in case of an impulse steam turbine


   A.Fixed

   B.Rotating

   C.Moving

   D.All of the above


✔ View Answer


A.Fixed

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7. The efficiency of steam turbine may be improved by........


   A.Reheating of steam

   B.Regenerative feed heating

   C.Binary vapour plants

   D.Any of the above


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D.Any of the above

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8. Theratio of workdone on the blades per kg of steam to the energy supplied to the blades is called........


   A.Gross or stage efficiency

   B.Diagram or blading efficiency

   C.Nozzle efficiency

   D.Mechanical efficiency


✔ View Answer


B.Diagram or blading efficiency

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9. In a reaction turbine........


   A.The steam is allowed to expand in the nozzle,where it gives a high velocity before it enters the moving blades

   B.The expansion of steam takes place partly in the fixed blades and partly in the moving blades

   C.The steam is expanded from a high pressure to a condenser pressure in one or more nozzles

   D.The pressure and temperature of steam remains constant


✔ View Answer


B.The expansion of steam takes place partly in the fixed blades and partly in the moving blades

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10. The action of steam in a steam turbine is......


   A.Static

   A.Dynamic

   C.Static and dynamic

   D.Neither static nor dynamic


✔ View Answer


B.Dynamic

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