Q. Out of the following flow measuring devices, which one incurs the maximum installation cost as well as pressure loss ?

View solution

Q. For turbulent fluid flow in pipe, the expression for Prandtl one seventh power law is (where, r = pipe radius, x = distance).

View solution

Q. Which of the following has the maximum compression ratio ?

View solution

Q. Scale up of agitator design requires

View solution

Q. The head loss in turbulent flow in pipe is proportional to(where, V = velocity of fluid through the pipe)

View solution

Q. Unsteady non-uniform flow is represented by flow through a/an

View solution

Q. Prandtl number is a measure of the

View solution

Q. A centrifugal pump has the following specifications:

Power = 4 H.P.
Speed = 800 rpm
Head = 8 metres
Flow = 1000 litres/minutes.

If its speed is halved, then the new head will be __________ metres.

View solution

Q. In hindered settling, the particles are

View solution

Q. A bed of spherical particles (specific gravity 2.5) of uniform size 1500 μm is 0.5 m in diameter and 0.5 m high. In packed bed state, the porosity may be taken as 0.4. Ergun's equation for the above fluid-particle system (in SI units) is given below :

Δ P/L = 375 x 10³ Vₒₘ + 10.94 x 10⁶ V²ₒₘ (SI units)

If water is to be used as the fluidising medium, in actual operation, the above bed has a height = 1 m. What is the porosity of the fluidised bed ?

View solution

Q. Dimension of kinematic viscosity is

View solution

Q. A streamline is a line in flow field,

View solution

Q. While starting an axial flow pump, its delivery valve should be kept

View solution

Q. __________ forces do not act in case of fluid flow.

View solution

Q. An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonion fluid beyond yield stress. Which of the following is an ideal plastic ?

View solution

Q. The capacity of a centrifugal pump Can be increased by increasing the

View solution

Q. Which law is followed by the velocity distribution in the turbulent boundary layer?

View solution

Q. The losses in open channel flow generally vary as the

View solution

Q. Rise of liquid in a capillary tube is due to

View solution

Q. At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump ?

View solution