Hydraulic Machines MCQs

In a single casing, multi-stage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by

In a centrifugal pump casing, the flow of water leaving the

A centrifugal pump has speed 1000 r.p.m., flow 1200 l.p.m., head 20m, power 5 H.P., if speed is increased to 1500 r.p.m. then new H.P. will be

A centrifugal pump has speed 1000 r.p.m., flow 1200 l.p.m., head 20m, power 5 H.P., if speed is increased to 1500 r.p.m. then new flow will be

The efficiency of a centrifugal pump is maximum when its blades are

The power required to drive a centrifugal pump is proportional to

If a pump is handling water and is discharging a certain flow Q at a constant total dynamic head requiring a definite B.H.P., the same pump when handling a liquid of specific gravity 0.75 and viscosity nearly same as of water would discharge, The horse power required will be

Low specific speed of a pump implies it is

Pick up the wrong statement about overall efficiency of a centrifugal pump. It is proportional to