Pump

Pump is a device that

• add energy to the fluid

• extract energy from the fluid

Gear pump is commonly used in application of

• high flow rate fluid

• high pressure fluid

• high viscosity fluid

____________ is not a positive displacement pump type

• Piston pump

• Human heart

• Gear pump

• Centrifugal pump

A ______________ pump is designed for relatively low discharge and a high head flow

• mixed flow

• axial flow

• radial flow

___________is the moving part of a centrifugal pump

• Volute

• Impeller

• Diffuser

• Suction nozzle

What is the function of snail-shaped volute

• to increase the velocity and to decrease the pressure

• to decrease the velocity and increase the pressure

NPSH is

• Normal Pressure Suction Head

• Net Positive Suction Head

• Normal Pump Suction Head

Priming is necessary for

• gear pump

• piston pump

• centrifugal pump

• diaphragm pump

______________ is a problem to be avoided for reliable operation of a centrifugal pump.

• Priming

• Pump design

• Cavitation

Centrifugal pump capacity can be increased by increasing the

• speed

• impeller diameter

• number of pump joined in parallel

• all of the above