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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 15
6.
Colebrook equation for friction factor in turbulent flow is given by, . It reduces to Nikuradse equation for a value of equal to
0
1
∞
0.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
The unit of velocity head is
ft-lb/sec
ft-lb/ft3
ft-lbf/lb
ft-lbf/sec.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
Which of the following properties of a fluid is responsible for offering resistance to shear ?
Surface tension.
Viscosity.
Specific gravity.
All (a), (b), and (c).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Erosion and pits formation on the impeller of a centrifugal pump may be due to
cavitation.
low speed of impeller.
its operation with delivery valve closed for considerable time after starting the pump.
off centering of pump with motor.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
The velocity profile exhibited by laminar flow of Newtonion fluids is such that the velocity distribution w.r.t. radius of the circular pipe is a/an __________ with the apex at the centre line of the pipe.
hyperbola
parabola
semi-circle
semi-ellipse
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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