Fluid Mechanics MCQs

A. 4/3

B. 3/2

C. 9/4

D. 27/8

A. the head loss is same through each pipe

B. the discharge is same through each pipe

C. a trial solution is not necessary

D. the discharge through each pipe is added to obtain total discharge

A. H1/2

B. H3’2

C. H5/2

D. H5’4 where H is head

A. 5kN

B. lOkN

C. 15 kN

D. 20 kN

A. product of pressure intensity at its centroid and area

B. force on a vertical projection of the curved surface

C. weight of liquid vertically above the curved surface

D. force on the horizontal projection of the curved surface

A. constant over the cross section

B. parabolic distribution across the section

C. zero at the mid plane and varies linearly with distance from mid plane

D. zero at plates and increases linearly to midpoint

A. centre of gravity and centre of buoy-ancy

B. centre of gravity and metacentre

C. centre of buoyancy and metacentre

D. free surface and centre of buoyancy

A. discharge

B. velocity of gas

C. pressure intensity of gas

D. pressure intensity of liquid

A. the pressure intensity reaches a minimum

B. the cross-section of a channel is reduced

C. the boundary layer comes to rest

D. all of the above

A. when its metacentric height is zero

B. when the metacentre is above the centre of gravity

C. when the metacentre is below the centre of gravity

D. only when its centre of gravity is below its centre of buoyancy