Fluid Mechanics MCQ Questions & Answers | Chemical Engineering

A. Inverse of the roughness

B. First power of the roughness

C. Square of the velocity

D. Inverse square of hydraulic radius

A. m²/sec

B. N/m².sec

C. Kg.sec/m

D. None of these

A. $$\frac{{{{\text{f}}_1}}}{4}$$

B. 4f₂

C. 2f₁

D. $$\frac{{{{\text{f}}_1}}}{2}$$

A. Laminar

B. Unsteady

C. Steady

D. Uniform

A. $$\frac{{2{\text{xy}}}}{{{\text{x}} + {\text{y}}}}$$

B. $$\frac{{{\text{xy}}}}{{{\text{x}} + {\text{y}}}}$$

C. $$\frac{{{\text{x}} + {\text{y}}}}{{2{\text{xy}}}}$$

D. $$\frac{{{\text{x}} + {\text{y}}}}{{{\text{xy}}}}$$

A. Sudden reduction of pressure in a fluid flow system caused by flow separation, vortex formation or abrupt closing of valve leads to cavitation

B. Cavitation may be caused due to boiling of liquid by decreasing the pressure resulting in formation & collapse of vapor cavities

C. Cavitation begins at higher static pressure and lower velocity in larger diameter pipelines resulting in audible noise

D. Large scale cavitation can not damage pipeline, restrict fluid flow and damage steam turbine blades

A. Gravity

B. Drag

C. Buoyant

D. All of the above

A. 2

B. 100

C. 2100

D. 700

A. The eddy viscosity is a function of the type of turbulence involved

B. The eddy viscosity is a fluid property

C. The viscosity of gas increases with increase in temperature

D. The viscosity of a liquid increases with decrease in temperature

A. < 4

B. > 4

C. > 12.5

D. < 10