Fluid Mechanics for Chemical

Which of the following fluid forces are not considered in the Navier-Stoke’s equation ?

Byadmin March 10, 2019August 27, 2021

Which of the following fluid forces are not considered in the Navier-Stoke’s equation ?

A. Gravity forces
B. Viscous forces
C. Pressure forces
D. Turbulent forces

Fluid Mechanics for Chemical

Potential flow is characterised by the___________________?

Potential flow is characterised by the___________________?

A. Irrotational and frictionless flow
B. Irrotational and frictional flow
C. One in which dissipation of mechanical energy into heat occurs
D. Formation of eddies within the stream

Read More Potential flow is characterised by the___________________?
Fluid Mechanics for Chemical

In Newton’s law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is___________________?

In Newton’s law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is___________________?

A. 0.44
B. 0.044
C. 4.4
D. 44

Read More In Newton’s law range, the drag co-efficient for the motion of spherical particle in a stationary fluid is___________________?
Fluid Mechanics for Chemical

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, the new discharge will be __________ litres/minute ?

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, the new discharge will be __________ litres/minute ?

A. 500
B. 200
C. 1000
D. 750

Read More 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, the new discharge will be __________ litres/minute ?
Fluid Mechanics for Chemical

A centrifugal pump is called a turbine pump, if it is having a_________________?

A centrifugal pump is called a turbine pump, if it is having a_________________?

A. Turbine type impeller
B. Vaned diffusion casing
C. Rotating vaned volute
D. None of these

Read More A centrifugal pump is called a turbine pump, if it is having a_________________?
Fluid Mechanics for Chemical

Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0) with age/time (t) (where, ε = roughness of the surface after time’t’. α = a co-efficient to be experimentally determined) ?

Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0) with age/time (t) (where, ε = roughness of the surface after time’t’. α = a co-efficient to be experimentally determined) ?

A. ε = ε0 + α.t
B. ε = ε0 + α.t2
C. ε = ε0 + α.t3
D. ε = ε0 + α.t4

Read More Which of the following equations as suggested by Colebrook and White gives the increase in roughness of a new surface (ε0) with age/time (t) (where, ε = roughness of the surface after time’t’. α = a co-efficient to be experimentally determined) ?
Fluid Mechanics for Chemical

In Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the ______________ of its diameter?

In Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the ______________ of its diameter?

A. Inverse
B. Square root
C. Second power
D. First power

Read More In Newton’s law range, the terminal velocity of a solid spherical particle falling through a stationary fluid mass varies as the ______________ of its diameter?

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