The ratio of quantity of liquid discharged per second from the pump to the quantity of liquid passing per second through the impeller is known as

Related MCQs

• 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.
• A centrifugal pump will start delivering liquid only when the pressure rise in the impeller is equal to the
• In a mixed flow centrifugal pump, the flow through the impeller is a combination of radial and axial flows.
• Delivery head of water of a centrifugal pump is inversely proportional to diameter of its impeller.
• In a centrifugal pump, the water enters the impeller
• The impeller of a centrifugal pump may have
• For centrifugal pump impeller, the maximum value of the vane exit angle is
• In a reciprocating pump, air vessels are fitted to the suction pipe and deliver pipe close to the cylinder of the pump.
• The specific speed from 160 to 500 r.p.m. of a centrifugal pump indicates that the pump is
• 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