0 to 25 m
25 m to 250 m
Above 250 m
None of these
B. 25 m to 250 m
Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
Kept fully closed
Kept fully open
Irrespective of any position
Kept 50% open
Casing
Delivery pipe
Suction pipe
Impeller
(w Hm) / (Q × ηo)
(w Hm Q) / ηo
(w Q) / (Hm × ηo)
(w Q ηo) / Hm
Decreases
Increases
Remain same
None of these
Pelton wheel with one nozzle
Pelton wheel with two or more nozzles
Kaplan turbine
Francis turbine
Ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
Ratio of the actual work available at the turbine to the energy imparted to the wheel
Ratio of the work done on the wheel to the energy of the jet
None of the above
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
ηh = ηo × ηm
ηm = ηm × ηh
ηo = ηh × ηm
None of these
2 to 4
4 to 8
8 to 16
16 to 24
Adjustable blades
Backward curved blades
Vaned diffusion casing
Inlet guide blades
Impeller diameter
Speed
Fluid density
Both (A) and (B) above
Ratio of the actual power produced by the turbine to the energy actually supplied by the turbine
Ratio of the actual work available at the turbine to the energy imparted to the wheel
Ratio of the Work done on the wheel to the energy of the jet
None of the above
Straight
Bent forward
Bent backward
Radial
Horizontal
Nearly horizontal
Steep
First rise and then fall
Smoothen flow
Reduce acceleration to minimum
Increase pump efficiency
Save pump from cavitations
To run the turbine full
To prevent air to enter the turbine
To increase the head of water by an amount equal to the height of the runner outlet above the tail race
To transport water to downstream
Directly as the air or gas density
Inversely as square root of density
Inversely as density
As square of density
No flow will take place
Cavitation will be formed
Efficiency will be low
Excessive power will be consumed
Directly proportional to N
Inversely proportional to N
Directly proportional to N²
Inversely proportional to N²
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
Allow the water to enter the runner without shock
Allow the water to flow over them, without forming eddies
Allow the required quantity of water to enter the turbine
All of the above
Same quantity of liquid
0.75 Q
Q/0.75
1.5 Q
At the top
At the bottom
At the canter
From sides
10 r.p.m.
20 r.p.m.
40 r.p.m.
80 r.p.m.
Fourneyron turbine
Journal turbine
Thomson's turbine
Pelton wheel
39.2 %
49.2 %
68.8 %
84.8 %
Suction lift + Loss of head in suction pipe due to friction + Delivery lift + Loss of head in delivery pipe due to friction + Velocity head in the delivery pipe
Workdone per kN of water Losses within the impeller
Energy per kN at outlet of impeller Energy per kN at inlet of impeller
All of the above
Directly as fan speed
Square of fan speed
Cube of fan speed
Square root of fan speed
Centrifugal pump
Axial flow pump
Mixed flow pump
Reciprocating pump