Where does the maximum stress occur in case of laminar flow of incompressible fluid in a closed conduit of diameter ‘d’ ?

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What is the shear rate at the pipe wall, in case of laminar flow of Newtonian fluids in a pipe of diameter ‘D’ & length ‘L’ incurring a pressure drop ‘Δp’ with average velocity ‘Vavg’ ?

A. D Δp/8L B. D Δp/4L C. 8 Vavg/D D. 4 Vavg/D...

Potential flow is characterised by the___________________?

A. Irrotational and frictionless flow B. Irrotational and frictional flow C. One in which dissipation of mechanical energy into heat occurs D. Formation of eddies within the stream...

Drag force on the float of a Rotameter is (where Q = flow rate of the)__________________?

A. ∝ Q B. ∝ √Q C. ∝ Q2 D. Constant...

The valve commonly used in pipes larger than 2″ dia is a______________?

A. Globe valve B. Plug-cock C. Gate valve D. Check valve...

The discharge through a rectangular weir varies as ___________________?

A. H1/2 B. H5/2 C. H2/5 D. H3/2...