E-PolyLearning

1. How many types of fluid flow are characterized in the realms of fluid mechanics?
a. 1
b. 2
c. 3
d. 4
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Answer: (b).2

2. In which fluid flow, the motion of fluid particles is irregular?
a. Turbulent
b. Laminar
c. One dimensional
d. Two dimensional
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Answer: (a).Turbulent

3. Following are the characteristics of turbulent flow

(i) Eddying
(ii) Sinuous
(iii) Rectilinear

Identify the correct option
a. 2 and 3
b. 1 and 3
c. 1, 2 and 3
d. 1 and 2
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Answer: (d).1 and 2

4. The nature of fluid flow is governed by following parameters

(i) Mean flow velocity
(ii) Density of fluid
(iii) Dynamic viscosity of the fluid

Identify the correct statements
a. 1 and 3
b. 1 only
c. 1, 2 and 3
d. 2 and 3
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Answer: (c).1, 2 and 3

5. The value of convective coefficient of air in case of free convection is
a. 3-7 W/m² K
b. 3-4 W/m² K
c. 8-9 W/m² K
d. 9-9.5 W/m² K
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Answer: (a).3-7 W/m² K

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