Fluid Mechanics for Chemical

Which of the following can be used to create a flow of gas, where no significant compression is required ?

Byadmin March 9, 2019August 26, 2021

Which of the following can be used to create a flow of gas, where no significant compression is required ?

A. Reciprocating compressor
B. Blower
C. Axial flow compressor
D. Centrifugal compressor

Fluid Mechanics for Chemical

Which of the following is most prone to pulsating discharge flow ?

Which of the following is most prone to pulsating discharge flow ?

A. Centrifugal pump
B. Reciprocating pump
C. Gear pump
D. Axial flow pump

Read More Which of the following is most prone to pulsating discharge flow ?
Fluid Mechanics for Chemical

The distribution of shear stress in a stream of fluid in a circular tube is_____________________?

The distribution of shear stress in a stream of fluid in a circular tube is_____________________?

A. Linear with radius for turbulent flow only
B. Linear with radius for laminar flow only
C. Linear with radius for both laminar & turbulent flow
D. Parabolic with radius for both laminar & turbulent flow

Read More The distribution of shear stress in a stream of fluid in a circular tube is_____________________?
Fluid Mechanics for Chemical

The rate of shear versus the shear stress curves are time dependent for _____________ fluid?

The rate of shear versus the shear stress curves are time dependent for _____________ fluid?

A. Thixotropic
B. Rheopectic
C. Both A. & B.
D. Neither A. nor B.

Read More The rate of shear versus the shear stress curves are time dependent for _____________ fluid?
Fluid Mechanics for Chemical

Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the______________?

Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the______________?

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

Read More Isothermal turbulent flow of a fluid results in decrease of its pressure, which depends on the______________?
Fluid Mechanics for Chemical

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 × 103 VOM + 10.94 × 106 V2 OM (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 ?

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 × 103 VOM + 10.94 × 106 V2 OM (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 ?

A. 0.2
B. 0.5
C. 0.7
D. 0.8

Read More 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 × 103 VOM + 10.94 × 106 V2 OM (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 ?
Fluid Mechanics for Chemical

Which is the most efficient and best for measuring very small flow rate of gases ?

Which is the most efficient and best for measuring very small flow rate of gases ?

A. Venturimeter
B. Orificemeter
C. Rotameter
D. Flow nozzle

Read More Which is the most efficient and best for measuring very small flow rate of gases ?

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