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Chemical Engineering - Fluid Mechanics

Exercise : Fluid Mechanics - Section 5
41.
If the head over the triangular notch is doubled, the discharge will increase by __________ times.
2
2.828
5.657
4
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Friction factor for a hydraulically smooth pipe at NRe = 2100 is f1. If the pipe is further smoothened (i.e., roughness is reduced), the friction factor at the same value of NRe, will
increase.
decrease.
remain unchanged.
increase or decrease depending on the pipe material.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
What is the force required (in Newtons) to hold a spherical balloon stationary in water at a depth of H from the air-water iterface? The balloon is of radius 0.1 m and is filled with air.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to
R
R2
R4
R0.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
Interstage coolers are provided in a multistage compressor to
save power in compressing a given volume to a given pressure.
cool the delivered air.
achieve the exact delivery pressure.
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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