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Mechanical Engineering Objective Questions { Hydraulic Machines }



50. Casting of a centrifugal pump is designed so as to minimize
A.Friction loss
B.Cavitation
C.Static head
D.Loss of kinetic energy
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51. If P is the power developed by a turbine under a head of water H, then unit power developed by the turbine is
A.P/H
B.P/√H
C.P/H^(3/2)
D.P/H^2
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52. The unit speed of a turbine runner is
A.N/H
B.N/√H
C.N/H^(3/2)
D.N/H^2
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53. The unit discharge through a turbine is
A.Q/H
B.Q/√H
C.Q/H^(3/2)
D.Q/H^2
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54. The speed of a turbine and discharge through turbine are proportional to
A.Head H
B.√H
C.H^2
D.H^(3/2)
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55. Specific speed of a turbine depends upon
A.Speed, power and discharge
B.Speed, power and head
C.Speed and head
D.Speed, discharge and head
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56. The specific speed of a turbine is the speed of such a turbine, identical with a given turbine, which
A.Develops unit power under unit head
B.Develops unit power under unit discharge
C.Develops unit power under unit head
D.Develops unit speed under unit head
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