Category: Fluid Mechanics for Chemical

A. Use of floats of different densities
B. No means
C. Increasing the diameter of the float
D. Decreasing the diameter of the float

A. For non-symmetrical bodies is not vertical
B. Depends on the depth of the submergence of the floating body
C. Depends on the weight of the floating body
D. None of these

A. Wall roughness
B. Reynolds number
C. Both A. & B.
D. Neither A. nor B.

A. Increase
B. Decrease
C. Remain same
D. Be quadrupled

A. Irrotational
B. Turbulent
C. Steady
D. None of these

A. Increases
B. Decreases
C. Remain same
D. May increase or decrease

A. Length is shorter
B. Throat diameter is more
C. Sudden expansion of flow in the downstream occurs
D. Distance between the throat and the inlet is more

A. Human blood is a Newtonian fluid
B. A Newtonian fluid obeys Newton’s law of cooling
C. For a non-Newtonian fluid, a straight line passes through the origin in a plot between shear
stress and shear gradient
D. Thin lubricating oil is an example of a non-Newtonian fluid

A. Rough and smooth pipes have the same friction factor
B. Laminar film covers the roughness projections
C. Friction factor depends upon NRe only
D. Friction factor is independent of the relative roughness

A. Run at a lower speed for the same discharge
B. Do not need priming
C. Deliver fluid with pulsating/fluctuating discharge
D. Can be run with discharge line valve closed for a short interval