Fluid Mechanics for Chemical MCQs

724 MCQs  — Chemical Engineering MCQs  (Page 12 of 73)

Existence of boundary layer in fluid flow is because of the_________________?
A. Surface tension
B. Fluid density
C. Fluid viscosity
D. Gravity forces
Critical velocity in a pipe flow_________________?
A. Increases as fluid viscosity increases
B. Increases as pipe diameter increases
C. Independent of fluid density
D. None of these
Choose the set of pressure intensities that are equivalent ?
A. 4.33 psi, 10 ft. of water, 8.83 inches of hg
B. 4.33 psi, 10 ft. of water, 20.7 inches of hg
C. 10 psi, 19.7 ft. of water, 23.3 inches of hg
D. 10 psi, 19.7 ft. of water, 5.3 inches of hg
If two capillary tubes of dia 0.5 mm and 1 mm are dipped in a pot containing mercury, then the rise of mercury is_________________?
A. Same in both the tubes
B. Greater in 1 mm dia tube
C. Greater in 0.5 mm dia tube
D. Zero in both the tubes