In a single casing, multistage pump running at constant speed, the capacity rating is to be slightly lowered. It can be done by_______________?

Related Mcqs:

For starting an axial flow pump, its delivery valve should be____________________?

A. closed B. open C. depends on starting condition and flow desired D. could be either open or closed E. partly open and partly closed...

In a centrifugal pump, the liquid enters the pump__________________?

A. at the top B. at the bottom C. at the center D. from sides E. none of the above...

Casting of a centrifugal pump is designed so as to minimize________________?

A. friction loss B. cavitation C. static head D. loss of kinetic energy E. starting time...

According to fan laws, at constant weight of air or gas, the speed, capacity and pressure vary________________?

A. directly as the air or gas density B. inversely as square root of density C. inversely as density D. as square of density E. as square root of density...

In a centrifugal pump casing, the flow of water leaving the impeller, is___________________?

A. rectilinear flow B. radial flow C. free vortex motion D. forced vortex E. none of the above...