Q. Function of air vessel provided in a reciprocating pump is to

View solution

Q. The Prandtl pitot tube measures the

View solution

Q. Vena-contracta formed during flow of a liquid through an orificemeter has

View solution

Q. As per Newton's law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to(where, μ = fluid viscosity)

View solution

Q. Horsepower increase of a centrifugal gas compressor without altering the volumetric flow rate will __________ the gas discharge pressure.

View solution

Q. In continuous fluidisation

View solution

Q. Drag force on the float of a rotameter is(where Q = flow rate of the )

View solution

Q. The unit of dynamic viscosity in SI unit is

View solution

Q. Pressure drop (Δp) for a fluid flowing in turbulent flow through a pipe is a function of velocity (V) as

View solution

Q. Dean number is concerned with the

View solution

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