Fluid Mechanics MCQ Questions & Answers | Chemical Engineering

A. 2 to 3

B. 0.01 to 0.10

C. 200 to 300

D. 100 to 1000

A. U-tube manometer

B. Inclined tube manometer

C. Pitot tube

D. None of these

A. Various momentums

B. Various masses

C. Different forms of mechanical energy

D. None of these

A. Velocity is constant along a stream line

B. Energy is constant throughout the fluid

C. Energy is constant along a stream line, but may vary across stream lines

D. None of these

A. Froude number

B. Kinematic viscosity

C. Pressure co-efficient

D. None of these

A. Highly viscous fluid

B. Very narrow passages

C. Very slow motion

D. None of these

A. At the centre

B. At $$\frac{{\text{d}}}{4}$$ from the wall

C. At the wall

D. At $$\frac{{\text{d}}}{8}$$ from the wall

A. 1

B. 1.5

C. 2

D. 2.5

A. The shear stress at the pipe (dia = D, length = L) wall in case of laminar flow of Newtonion fluids is $$\frac{{\text{D}}}{{4{\text{L}}}} \cdot \Delta {\text{p}}$$

B. In the equation, $$\tau \cdot {{\text{g}}_{\text{c}}} = {\text{k}} \cdot {\left( {\frac{{{\text{du}}}}{{{\text{dy}}}}} \right)^{\text{n}}}$$   the value of the value of 'n' for pseudoplastic and dilatant fluids are < 1 and > 1 respectively.

C. Shear stress for Newtonion fluid is proportional to the rate of shear in the direction perpendicular to motion

D. With increase in the Mach number > 0.6, the drag co-efficient decreases in case of compressible fluids

A. Venturimeter

B. Orificemeter

C. Rotameter

D. Pitot tube