Convection : Processes And Properties Questions And Answers.

1.How many types of fluid flow are characterized in the realms of fluid mechanics?
A. 2
B. 4
C. 6
D. 8

2.In which fluid flow, the motion of fluid particles is irregular?
A. Two dimensional
B. One dimensional
C. Laminar
D. Turbulent

3.The value of convective coefficient of air in case of free convection is?
A. 9-9.5 W/m2 K
B. 8-9 W/m2 K
C. 3-4 W/m2 K
D. 3-7 W/m2 K

4.The fluid particles move in flat or curved un-mixing layers or streams and follow a smooth continuous path. This type of flow is known as?
A. Laminar flow
B. Turbulent flow
C. Stream flow
D. Steady flow

5.The characteristic dimension d in the relation R E = V d p/δ is the equivalent diameter and is defined as how many times the cross-sectional flow area divided by the wetted perimeter
A. 4
B. 6
C. 8
D. 10

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