A. Turbulent
B. Viscous
C. Gravity
D. Pressure
Related Mcqs:
- Gage pressure within a spherical droplet of a fluid is ‘p’. What will be gage pressure within a bubble of the same size & of the same fluid ?
A. p
B. 2 p
C. 0.5 p
D. 0.25 p - A fluid is termed as the Newtonian fluid, when the shear stress is _________________ the velocity gradient ?
A. Independent of
B. Inversely proportional to
C. Directly proportional to
D. None of these - In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold fluid enters at 50°C & leaves at 70°C. The arithmetic mean temperature difference in this case is ______________ °C?
A. 20
B. 60
C. 120
D. ∞ - Reynolds number of a fluid flowing in a circular pipe is 10,000. What will be the Reynolds number when the fluid velocity is decreased by 30% & the pipe diameter is increased by 30% ?
A. 9,100
B. 13,000
C. 7,000
D. 2,550 - __________________ stress cannot be sustained by a fluid in equilibrium ?
A. Shear
B. Tensile
C. Compressive
D. None of these - Force between the molecules of the same substance is called ______________________ force?
A. Adhesive
B. Cohesive
C. Molecular
D. Vander Walls - Euler number is defined as the ratio of inertia force to _______________ force?
A. Pressure
B. Elastic
C. Gravity
D. Viscous - Internal energy of a gas obeying Van-Der-Waals equation of state, [p + (a/v2)] (V – b) = RT, depends upon its___________________?
A. Pressure & temperature
B. Pressure & specific volume
C. Temperature & specific volume
D. Temperature only - The friction factor for the turbulent fluid flow in a rough pipe does not depend upon the_________________?
A. Pipe roughness & pipe diameter
B. Fluid velocity
C. Type of flowing fluid
D. Both B. & C. - For the Stoke’s law to be valid in the case of a falling sphere in a fluid, the_____________________?
A. Reynolds number (based on sphere diameter) should be < 1
B. Flow around the sphere should be in turbulent region
C. Sphere must be metallic
D. Fluid density should be constant
