Chemical Engineering MCQs

6108 MCQs  (Page 413 of 611)

Absolute viscosity of a fluid is a function of the __________ of the fluid?
A. Motion
B. Pressure & temperature
C. Shearing stress
D. Both b. & c.
A pitched-blade turbine draws ______________ a straight blade turbine?
A. Less power than
B. More power than
C. Same power as
D. Data insufficient to predict
In turbulent flow, a rough pipe has the same friction factor as a smooth pipe____________________?
A. In the zone of complete turbulence
B. When the roughness projections are much smaller than the thickness of the laminar film
C. Everywhere in the transition zone
D. When the friction factor is independent of the reynold’s number
Which of the following assumptions enables the Euler’s equation of motion to be integrated ?
A. The fluid is incompressible
B. The fluid is non-viscous
C. The continuity equation is satisfied
D. The flow is rotational and incompressible
Fluid flow at increasing rate through a diverging pipe is an example of ______________ flow?
A. Steady uniform
B. Non-steady uniform
C. Steady non-uniform
D. Non-steady non-uniform
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