A. < 1
B. > 1
C. < 5
D. None of these
Related Mcqs:
- A particle A of diameter 10 microns settles in an oil of specific gravity 0.9 and viscosity 10 poise under Stoke’s law. A particle B with diameter 20 microns settling in the same oil will have a settling velocity ?
A. Same as that of A
B. One fourth as that of A
C. Twice as that of A
D. Four times as that of A - The Navier-Stokes equation deals with the law of conservation of___________________?
A. Mass
B. Energy
C. Both A. & B.
D. Momentum - Stoke’s equation is valid in the Reynolds number range__________________?
A. 0.01 to 0.1
B. 0.1 to 2
C. 2 to 10
D. 10 to 100 - A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation ?
A. Inertial and drag forces are important
B. Drag, gravitational and buoyancy forces are important
C. Drag force and gravitational forces are important
D. None of the above - Creeping flow around a sphere is defined, when particle Reynolds number is___________________?
A. < 2100
B. < 0.1
C. > 2.5
D. < 500 - Brownian movement is prominent in the particle size range of _____________ microns in case of settling of a particle in a fluid?
A. 2 to 3
B. 0.01 to 0.10
C. 200 to 300
D. 100 to 1000 - Navier-Stokes equation is useful in the analysis of _____________ fluid flow problems?
A. Non-viscous
B. Viscous
C. Turbulent
D. Rotational - Stoke’s law is valid, when NRe, p is less than_________________?
A. 2
B. 100
C. 2100
D. 700 - Pascal’s law is valid, only when the fluid is_____________________?
A. Frictionless and at rest
B. At rest
C. At rest and when the frictionless fluid is in motion
D. None of these - The terminal velocity of a particle moving through a fluid varies as dp n. What is the value of n’ for Newton’s law regime ?
A. 0.5
B. 1
C. 1.5
D. 3
