Chemical Engineering - Chemical Engineering Basics

46. 

Transition from laminar to turbulent zone in free convection heat transfer is governed by the critical value of

A. Grashoff number.
B. Grashoff number & Reynolds number.
C. Reynolds number.
D. Grashoff number & Prandtl number.

Answer: Option D

Explanation:

No answer description available for this question. Let us 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

A. parabolic
B. hyperbolic
C. straight line
D. none of these

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

48. 

Energy of the sun arises mainly from __________ reactions.

A. fusion
B. fission
C. combustion
D. none of these

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

49. 

Which of the following fastening devices has a head at one end and a nut fitted to the other ?

A. Bolt
B. Stud
C. Top bolt
D. None of these

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

50. 

Sudden fall of atmospheric pressure by a large amount is an indication of the

A. rain
B. cold wave
C. storm
D. fair weather

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

« Prev   1 2 3 4 5 6 7 8 9 10