Hydraulic Machines Multiple Choice Questions and Answers

36. Cavitation in hydraulic turbine results in .......

   A.Noise and vibration

   B.Reduction of discharge

   C.Drop in output and efficiency

   D.Rough surface

37. For Flood control and irrigation applications the pump generally used is.......

   A.Centrifugal type

   B.Ceciprocating type

   C.Axial flow type

   D.Radial flow type

38. Higher specific speed (161 to 500 ) of centrifugal pump indicates that the pump is .........

   A.Axial type

   B.Mixed flow type

   C.Axial flow

   D.Any of the above

39. Higher specific speed (300 to 1000 ) of turbine indicates that the turbine is......

   A.Pelton wheel

   B.Kaplan

   C.Francis

   D.Any of the above

40. As specific speed of a centrifugal pump increases its blade height ......

   A.Increases

   B.Decreases

   C.Remains unaffected

   D.Increase or decrease depends on other factors

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