For laminar flow through a long pipe, the pressure drop per unit length...

Q.

For laminar flow through a long pipe, the pressure drop per unit length increases

A. In linear proportion to the cross-sectional area

B. In proportion to the diameter of the pipe

C. In inverse proportion to the cross-sectional area

D. In inverse proportion to the square of crosssectional area

Answer & Explanation

Answer : Option: C

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Q.

The viscosity in a fluid is caused mainly by

A. Intermolecular force of cohesion

B. Molecular momentum exchange

C. Both A and B

D. None of the above

Answer & Explanation

Q.

In hydrostatics, it is observed that total weight of the water in the tank is much less than the total pressure on the bottom of the tank. This is known as

A. Pascal's paradox

B. Newton's paradox

C. Stokes paradox

D. Archimedes' principle

Answer & Explanation

Q.

Laminar sublayer can develop during flow over a flat plate. It exists in

A. Laminar zone

B. Transition zone

C. Turbulent zone

D. Laminar and transition zones

Answer & Explanation

Q.

The continuity equation for a steady flow states that

A. Velocity field is continuous at all points in flow field

B. The velocity is tangential to the streamlines

C. The stream function exists for steady flows

D. The efflux rate of mass through the control surface is zero

Answer & Explanation

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For laminar flow through a long pipe, the pressure drop per unit length...

Q. For laminar flow through a long pipe, the pressure drop per unit length increases

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For laminar flow through a long pipe, the pressure drop per unit length increases

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