Decreases
Increases
Remain same
None of these
A. Decreases
2 to 4
4 to 8
8 to 16
16 to 24
The centrifugal pump is suitable for large discharge and smaller heads.
The centrifugal pump requires less floor area and simple foundation as compared to reciprocating pump.
The efficiency of centrifugal pump is less as compared to reciprocating pump.
All of the above
Lift and resultant force
Drag and resultant force
Lift and tangential force
Lift and drag
Two cylinders, two rams and a storage device
A cylinder and a ram
Two coaxial rams and two cylinders
A cylinder, a piston, storage tank and control valve
Directly proportional to diameter of its impeller
Inversely proportional to diameter of its impeller
Directly proportional to (diameter)² of its impeller
Inversely proportional to (diameter)² of its impeller
Increases with increase in pressure
Decreases with increase in pressure
More or less remains constant with increase in pressure
Unpredictable
Sum
Difference
Product
None of these
Directly proportional
Inversely proportional
4th power
None of these
39.2 %
48.8 %
84.8 %
88.4 %
Radial
Axial
Centrifugal
Vortex
The wheel runs entirely by the weight of water
The wheel runs entirely by the impulse of water
The wheel runs partly by the weight of water and partly by the impulse of water
None of the above
Smoothen flow
Reduce acceleration to minimum
Increase pump efficiency
Save pump from cavitations
Directly as the air or gas density
Inversely as square root of density
Inversely as density
As square of density
At full load
At which there will be no damage to the runner
Corresponding to maximum overload permissible
At which the turbine will run freely without load
Slow speed pump with radial flow at outlet
Medium speed pump with radial flow at outlet
High speed pump with radial flow at outlet
High speed pump with axial flow at outlet
Speed and power developed
Discharge and power developed
Speed and head of water
Speed, power developed and head of water
The water flows parallel to the axis of the wheel
The water enters at the centre of the wheel and then flows towards the outer periphery of the wheel
The water enters the wheel at the outer periphery and then flows towards the centre of the wheel
The flow of water is partly radial and partly axial
(w Hm) / (Q × ηo)
(w Hm Q) / ηo
(w Q) / (Hm × ηo)
(w Q ηo) / Hm
Rectilinear flow
Radial flow
Free vortex motion
Forced vortex
Pelton wheel
Kaplan turbine
Francis turbine
None of these
0.15 to 0.3
0.4 to 0.5
0.6 to 0.9
1 to 1.5
L.A.N
2 L.A.N
(L.A.N)/60
(2 L.A.N)/60
No flow will take place
Cavitation will be formed
Efficiency will be low
Excessive power will be consumed
waV/2g × sinθ
waV/g × sinθ
waV²/2g × sin2θ
waV²/g × sinθ
Installing the turbine below the tail race level
Using stainless steel runner of the turbine
Providing highly polished blades to the runner
All of the above
Propeller turbine
Francis turbine
Impulse turbine
None of the above
39.2 %
48.8 %
84.8 %
88.4 %
Have identical velocities
Are equal in size and shape
Are identical in shape, but differ only in size
None of the above
Radially, axially
Axially, radially
Axially, axially
Radially, radially
Energy available at the impeller to the energy supplied to the pump by the prime mover
Actual workdone by the pump to the energy supplied to the pump by the prime mover
Energy supplied to the pump to the energy available at the impeller
Manometric head to the energy supplied by the impeller per kN of water