MCQOPTIONS
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MCQOPTIONS
This section includes 31 Mcqs, each offering curated multiple-choice questions to sharpen your Aerodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Ram was on the bank of the river and was observing the flow of river. After sometime he got an idea and he started imagining certain points in the fluid and when he drew tangent to those points, he got direction of the flow. These lines are called as _____________ |
| A. | Streakline |
| B. | Pathline |
| C. | Streamline |
| D. | Velocity vector |
| Answer» D. Velocity vector | |
| 2. |
Which of the following are the imaginary lines? |
| A. | Streamline and pathline |
| B. | Pathline and streakline |
| C. | Streamline and streakline |
| D. | Only streamline |
| Answer» B. Pathline and streakline | |
| 3. |
In steady flow, streamline, streakline, pathline are the same. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
In a thermodynamic system, the measurement of heat is called as ___________ |
| A. | Entropy |
| B. | Enthalpy |
| C. | Internal energy |
| D. | Heat transfer |
| Answer» C. Internal energy | |
| 5. |
The smoke particles coming out from the chimney falls under ____________ |
| A. | Streamline |
| B. | Streakline |
| C. | Path line |
| D. | Position vector |
| Answer» C. Path line | |
| 6. |
By the time the vehicle reaches the surface of the earth, the potential and kinetic energy become zero. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which of the following is a point property? |
| A. | Pressure |
| B. | Mass |
| C. | Density |
| D. | Pressure and density |
| Answer» E. | |
| 8. |
Which of the following has similar characteristics? |
| A. | solid and liquid |
| B. | liquid and gas |
| C. | solid and gas |
| D. | cannot be determined |
| Answer» C. solid and gas | |
| 9. |
Continuity equation is related to _______ |
| A. | Mass conservation |
| B. | Energy conservation |
| C. | Momentum conservation |
| D. | Velocity change |
| Answer» B. Energy conservation | |
| 10. |
If the system is in steady state, it is in an equilibrium state. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
When Reynold's number limits to infinity, inviscid flow is approached. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Centre of pressure is defined as the point on the body where the resultant forces acts. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
System and surrounding are both inter-related things. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 14. |
In the equation, ?.V=1/ v*D (v)/Dt, the term ?.V is _________ |
| A. | change in velocity |
| B. | divergence of velocity |
| C. | volume |
| D. | velocity as a function of time |
| Answer» C. volume | |
| 15. |
Which of the following flow is practically impossible in nature? |
| A. | viscous flow |
| B. | inviscid flow |
| C. | laminar flow |
| D. | turbulent flow |
| Answer» C. laminar flow | |
| 16. |
Surface forces includes _________ |
| A. | pressure and shear stress |
| B. | point force |
| C. | body force |
| D. | gravity |
| Answer» B. point force | |
| 17. |
Which of the following flow is best suited for space shuttle? |
| A. | continuum flow |
| B. | free molecular flow |
| C. | turbulent flow |
| D. | laminar flow |
| Answer» C. turbulent flow | |
| 18. |
Continuity equation is one of the most fundamental equations in fluid dynamics. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 19. |
In an unsteady flow, the equation of streamline is given by __________ |
| A. | x=y |
| B. | y=0 |
| C. | y=0 |
| D. | y=xt |
| Answer» E. | |
| 20. |
Which of the following is not related to the streamlines? |
| A. | Mass |
| B. | Velocity |
| C. | Fluid flow |
| D. | Fluid domain |
| Answer» B. Velocity | |
| 21. |
Seeta used a closed curve as her start point, it will result in the ___________ |
| A. | plane |
| B. | stream surface |
| C. | stream line |
| D. | stream plane |
| Answer» C. stream line | |
| 22. |
The rate of change of angular position of the body is called as _________ |
| A. | Angular displacement |
| B. | Angular velocity |
| C. | Angular acceleration |
| D. | Distance |
| Answer» C. Angular acceleration | |
| 23. |
The pathline equation is ______ |
| A. | y = xt |
| B. | 2ln y = (ln x)2 |
| C. | x = y |
| D. | x = -1 + y |
| Answer» C. x = y | |
| 24. |
The term 2*? is called as _____________ |
| A. | Velocity |
| B. | Divergence |
| C. | Angular velocity |
| D. | Vorticity |
| Answer» E. | |
| 25. |
In steady state flow, the equation for streamline can be given by ________ |
| A. | x=0 |
| B. | y=0 |
| C. | x=y |
| D. | x=-1 |
| Answer» D. x=-1 | |
| 26. |
If ?*V is not equal to zero, then the flow is __________ |
| A. | steady |
| B. | unsteady |
| C. | rotational |
| D. | irrotational |
| Answer» D. irrotational | |
| 27. |
The angle between the two lines (x and y direction) is called as ___________ |
| A. | viscous layer |
| B. | strain |
| C. | stress |
| D. | velocity vector |
| Answer» C. stress | |
| 28. |
The subsonic flow over an airfoil is an example of __________ |
| A. | steady |
| B. | unsteady |
| C. | rotational |
| D. | irrotational |
| Answer» E. | |
| 29. |
If ?*V is equal to zero, then the flow is _________ |
| A. | steady |
| B. | unsteady |
| C. | rotational |
| D. | irrotational |
| Answer» E. | |
| 30. |
In microscopic view, Circulation is a __________ quantity. |
| A. | vector |
| B. | dimension less |
| C. | scalar |
| D. | non-measurable |
| Answer» D. non-measurable | |
| 31. |
The absence of vorticity means the flow is ________ |
| A. | steady |
| B. | unsteady |
| C. | rotational |
| D. | irrotational |
| Answer» E. | |