When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.

Related MCQs

• If the net positive suction head (NPSH) requirement for the pump is not satisfied, then
• The specific speed of a centrifugal pump may be defined as the speed of an imaginary pump, identical with the given pump, which will discharge one litre of water, while it is being raised through a head of one metre.
• In a reciprocating pump, air vessels are fitted to the suction pipe and deliver pipe close to the cylinder of the pump.
• The power of a centrifugal pump working under constant head and discharge increases with the speed.
• The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is
• Manometric head is the actual head of water against which a centrifugal pump has to work
• The specific speed of a centrifugal pump, delivering 750 litres of water per second against a head of 15 metres at 725 r.p.m., is
• The head available at the inlet of the turbine is known as net or effective head.
• Delivery head of water of a centrifugal pump is inversely proportional to diameter of its impeller.
• By fitting an air vessel to the reciprocating pump, there is always a saving of work done and subsequently saving of power. This saving in case of a single acting reciprocating pump is