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Diameter of delivery pipe

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Diameter of suction pipe

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Flow velocity at inlet given volume of liquid

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Flow velocity at outlet given volume of liquid

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Flow velocity given flow ratio

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Impeller radius at inlet given inlet tangential velocity

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Impeller radius at outlet given outlet tangential velocity

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Leakage of liquid given volumetric efficiency and discharge

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Least diameter of impeller

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Manometric efficiency

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Manometric efficiency in terms of velocities

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Manometric head given outlet impeller diameter, impeller speed and speed ratio

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Manometric head in terms of head imparted by the impeller and loss of head in the pump

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Manometric head in terms of head imparted by the impeller if loss of head in the pump is zero

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Manometric head in terms of static head and losses in pipes

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Manometric head in terms of static head, friction losses in suction and delivery pipes

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Manometric head in terms of total head at outlet and inlet of the pump

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Mechanical efficiency when Specific Weight of Liquid is Given

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Minimum speed for starting a centrifugal pump

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Net positive suction head

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Outlet diameter of impeller in terms of speed ratio, manometric head and impeller speed

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Overall efficiency

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Overall efficiency in terms of manometric, volumetric and mechanical efficiencies

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Suction specific speed

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Tangential velocity given speed ratio

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Tangential velocity of impeller at outlet

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Tangential velocity of the impeller at inlet

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Tangential velocity of the impeller at inlet in terms of angular velocity and impeller radius

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Tangential velocity of the impeller at outlet in terms of angular velocity and impeller radius

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Thoma's cavitation factor

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Thoma's cavitation factor in terms of net positive suction head

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Volume of liquid at inlet

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Volume of liquid at outlet

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Volumetric Efficiency of Pump when Discharge and Leakage of Liquid are Given

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Work done per second for Centrifugal pumps

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Work done per second if the flow at inlet is not radial

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Work done per second in terms of torque and angular velocity

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Work done per second per unit weight of liquid

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Work done per second per unit weight of liquid if the flow at inlet is not radial