Hydraulics and Fluid Mechanics

Choose the wrong statement________________?

Question

A. Viscosity of a fluid is that property which determines the amount of its resistance to a shearing force B. Viscosity is due primarily to interaction between fluid molecules C. Viscosity of liquids decreases with in-crease in temperature D. Viscosity of liquids is ...

Hydraulics and Fluid Mechanics 8 months 0 Answers 3 views Enlightened

Choose the wrong statement?

Question

A. fluids are capable of flowing B. fluids conform to the shape of the con-taining vessels C. when in equilibrium, fluids cannot sustain tangential forces D. when in equilibrium, fluids can sustain shear forces E. fluids have some degree of compressibility and offer little ...

Hydraulics and Fluid Mechanics 8 months 0 Answers 4 views Enlightened

Choose the wrong statement?

Question

A. any weight, floating or immersed in a liquid, is acted upon by a buoyant force B. Buoyant force is equal to the weight of the liquid displaced C. The point through which buoyant force acts, is called the center of buoyancy D. ...

Hydraulics and Fluid Mechanics 8 months 0 Answers 3 views Enlightened

Choose the wrong statement ?

Question

A. The center of buoyancy is located at the center of gravity of the displaced liquid B. For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy C. If e.g. and center ...

Hydraulics and Fluid Mechanics 8 months 0 Answers 0 views Enlightened

Select the correct statement ?

Question

A. Local atmospheric pressure depends upon elevation of locality only B. Standard atmospheric pressure is the mean local atmospheric pressure a* sea level C. Local atmospheric pressure is always below standard atmospheric pressure D. A barometer reads the difference be-tween local and standard ...

Hydraulics and Fluid Mechanics 8 months 0 Answers 2 views Enlightened

In a forced vortex, the velocity of flow everywhere within the fluid is__________________?

Question

A. maximum B. minimum C. zero D. non-zero finite E. unpredictable

Hydraulics and Fluid Mechanics 8 months 0 Answers 2 views Enlightened

Two pipe systems can be said to be equivalent, when the following quantites are same______________?

Question

A. friction loss and flow B. length and diameter C. flow and length D. friction factor and diameter E. velocity and diameter

Hydraulics and Fluid Mechanics 8 months 0 Answers 3 views Enlightened

At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_______________?

Question

A. minimum B. maximum C. zero D. negative value E. could be any value

Hydraulics and Fluid Mechanics 8 months 0 Answers 2 views Enlightened

For pipes, laminar flow occurs when Reynolds number is__________________?

Question

A. less than 2000 B. between 2000 and 4000 C. more than 4000 D. less than 4000 E. none of the above

Hydraulics and Fluid Mechanics 8 months 0 Answers 2 views Enlightened

The fluid forces considered in the Navier Stokes equation are__________________?

Question

A. gravity, pressure and viscous B. gravity, pressure and turbulent C. pressure, viscous and turbulent D. gravity, viscous and turbulent E. none of the above

Hydraulics and Fluid Mechanics 8 months 0 Answers 2 views Enlightened

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