For the production of very high vacuum, a _____________ pump is normally used?

Related Mcqs:

In continuous fluidisation_________________?

A. Solids are completely entrained B. The pressure drop is less than that for batch fluidisation C. There is no entrainment of solids D. Velocity of the fluid is very small...

In the complete turbulence zone (in rough pipes), the____________________?

A. Rough and smooth pipes have the same friction factor B. Laminar film covers the roughness projections C. Friction factor depends upon NRe only D. Friction factor is independent of the relative roughness...

Power required by a centrifugal pump is proportional to (where, D = diameter, N = r.p.m) ________________?

A. N2D3 B. ND2 C. N2D D. N3D5...

In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is___________________?

A. Constant along a streamline B. Not constant along a streamline C. Increased in the direction of flow D. None of these...

A globe valve is the most suitable for applications, in which____________________?

A. Fluid flow control is required B. Fluid contains dispersed solid particles C. Valve is required to be either fully open or fully closed D. One way flow is required...