MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Fluid Mechanics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A fluid with specific gravity 0.85 is flowing through a diameter 250 mm and 150 mm at the bottom and upper ends respectively. Determine the difference in datum head if the rate of flow through pipe is 0.04 m3/s. Take pressure at top and bottom as 27 N/cm2 and 10 N/cm2. |
| A. | 17.1 m |
| B. | 34.2 m |
| C. | 10.5 m |
| D. | None of the mentioned |
| Answer» B. 34.2 m | |
| 2. |
Water is flowing through a pipe of 3.8 cm diameter under a pressure of 20 N/cm2 (gauge) and with mean velocity of 3.7 m/s. Find the total head or total energy per unit weight of the water at a cross section, which is 7 m above the datum line. |
| A. | 56.14 m |
| B. | 28.07 m |
| C. | 84.18 m |
| D. | 10.52 m |
| Answer» C. 84.18 m | |
| 3. |
In derivation for Euler s equation, the weight of fluid element is considered as negligible and ignored in calculation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
According to statement of Bernoulli s theorem if Kinetic or Potential Energy is changing then overall energy changes and hence energy is not constant at all the places. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
If in a fluid, while applying Newton s second law of motion, compressibility force is neglected then what equation is obtained? |
| A. | Navier Stoke s Equation |
| B. | Reynold s equation of motion |
| C. | Euler s Equation of motion |
| D. | Continuity Equation for fluid flow |
| Answer» C. Euler s Equation of motion | |
| 6. |
From mathematical perspective if for a fluid curl of velocity vector is some constant value, it is ideal, steady and incompressible, then we can apply Bernoulli s equation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 7. |
Which of the following assumption is incorrect in the derivation of Bernoulli s equation? |
| A. | The fluid is ideal |
| B. | The flow is steady |
| C. | The flow is incompressible |
| D. | The flow is rotational |
| Answer» E. | |
| 8. |
In order to apply Bernoulli s equation across two sections, we have to obtain it from Euler s equation. What is the operation that needs to be carried out in order to obtain it from Euler s equation? |
| A. | Partial Differentiation |
| B. | Differentiation |
| C. | Integration |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 9. |
Navier-Stoke s equation can be obtained from Reynolds s equation by not considering which type of force? |
| A. | Turbulence force |
| B. | Gravity force |
| C. | Compressible force |
| D. | Viscous force |
| Answer» B. Gravity force | |
| 10. |
Which forces are neglected to obtain Euler s equation of motion from Newton s second law of motion? |
| A. | Viscous force, Turbulence force, Compressible force |
| B. | Gravity force, Turbulence force, Compressible force |
| C. | Body force, Gravity force, Turbulence force |
| D. | Viscous force, Turbulence force, Body force |
| Answer» B. Gravity force, Turbulence force, Compressible force | |