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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 1
46.
Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of
Grashoff number.
Grashoff number & Reynolds number.
Reynolds number.
Grashoff number & Prandtl number.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be
parabolic
hyperbolic
straight line
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Energy of the sun arises mainly from __________ reactions.
fusion
fission
combustion
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Which of the following fastening devices has a head at one end and a nut fitted to the other ?
Bolt
Stud
Top bolt
None of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
Sudden fall of atmospheric pressure by a large amount is an indication of the
rain
cold wave
storm
fair weather
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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