A.Priming faulty
B.Suction head too high
C.Air in water
D.Discharge head too high
E.Mechanical defect
Continue reading “If a centrifugal pump is noisy in operation, the cause may be________________?”
A.Similar stream lines
B.Same Reynolds number
C.Same efficiency
D.Same Froud’s number
E.None of these answers
A.Rotation of impeller
B.Centrifugal force
C.Momentum of particles
D.Lift of particles
E.None of the above
A.Smoothen the flow of water
B.Minimise friction losses in pipe
C.Prevent occurrence of hydraulic jump
D.To relieve the pressure due to water hammer
E.To maintain the flow of water under emergency conditions
A.The similarity of discharge
B.The similarity of linear dimensions
C.The similarity of motion
D.The similarity of forces
A.Weber number
B.Shround number
C.Cauchy number
D.Euler number
E.Froude number
A.Adhesion
B.Cohesion
C.Dynamic viscosity
D.Kinematic viscosity
E.Surface tension
A.Increasing the flow rate
B.Reducing the flow rate
C.Reducing the velocity of flow
D.Reducing the energy of flow
E.Reducing turbulence
A.0.4
B.0.8
C.1088
D.5.44
E.None of the above
A.Motion of a river around the pillars of a bridge
B.Flow through venturimeter
C.Flow through delivery pipe of a reciprocating pump
D.Steadily decreasing flow through a reducing section
E.Constant discharge through straight tapering draft tube turbine
