Category: Fluid Mechanics

A. coincides with the centre of gravity
B. coincides with the centroid of the volume of fluid displaced
C. remains above the centre of gravity
D. remains below the centre of gravity

A. Coefficient of contraction of a venturimeter is unity
B. Flow nozzle is cheaper than venturimeter but has higher energy loss
C. Discharge is independent of orientation of venturimeter whether it is horizontal, vertical or inclined
D. None of the above statement is correct.

A. velocity
B. discharge
C. head
D. pressure

A. x
B. x
C. x
D. x/7

A. 0.40 cm
B. 0.20 cm
C. 0.10 cm
D. 0.05 cm

Assume that boundary layer is entirely laminar

A. Lower critical Reynolds number is of no practical significance in pipe flow problems.
B. Upper critical Reynolds number is significant in pipe flow problems.
C. Lower critical Reynolds number has the value 2000 in pipe flow
D. Upper critical Reynolds number is the number at which turbulent flow changes to laminar flow

A. velocity at stagnation point
B. stagnation pressure
C. static pressure
D. dynamic pressure

A. The pressure intensity at vena contracta is atmospheric
B. Contraction is least at vena contracta
C. Stream lines are parallel throughout the jet at vena contracta
D. Coefficient of contraction is always less than one

A. H1/2
B. H3/2
C. H5/2
D. H

where H is head

A. 0.1
B. 0.01
C. 0.001
D. 0.0001