MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Aerodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The quantity at a point in a subsonic flow where the element is speeded up to sonic velocity adiabatically is defined as_____ |
| A. | Static local temperature, T |
| B. | Stagnation local temperature, T° |
| C. | T* |
| D. | Standard temperature |
| Answer» D. Standard temperature | |
| 2. |
For an isentropic flow, consider two points 1 and 2 along the flow. Select the incorrect statement out of the following. |
| A. | v1 = v2 |
| B. | ρo,1 = ρo,2 |
| C. | po,1 = po,2 |
| D. | ho,1 = ho,2 |
| Answer» B. ρo,1 = ρo,2 | |
| 3. |
The total pressure and total density are present there only for an isentropic flow. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The stagnation temperature To in case of an isentropic flow is the same as defined for the adiabatic flow. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
The total enthalpy in a general flow at point 1 is H1 and at point 2, which is downstream, is H2. Then __________ |
| A. | H1>H2 always |
| B. | H2>H1 always |
| C. | H1=H2 for general flow |
| D. | H1=H2 for adiabatic flow |
| Answer» E. | |
| 6. |
The total pressure and total temperature for a flow can only be talked about if the fluid particles are brought to rest by some means. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 7. |
For a steady, inviscid, adiabatic flow of a gas, the total temperate is constant along the flow. |
| A. | True always |
| B. | False always |
| C. | True only for calorically perfect gas |
| D. | False only for calorically perfect gas |
| Answer» D. False only for calorically perfect gas | |
| 8. |
Select the incorrect statement if all the streamlines of the steady, inviscid, adiabatic flow originate from a common uniform freestream. |
| A. | Stagnation enthalpy is same for each streamline |
| B. | h0 is constant along the entire flow |
| C. | h0 is not equal to the freestream value |
| D. | h + V2 = h0 is energy equation per unit mass |
| Answer» D. h + V2 = h0 is energy equation per unit mass | |
| 9. |
The constant h + V2/2 for an inviscid, adiabatic and a steady flow is equal to the stagnation enthalpy for the fluid. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which of these is not an assumption made when we derive the equation h + V2/2 = constant? |
| A. | Inviscid flow |
| B. | Steady flow |
| C. | Adiabatic flow |
| D. | Liquid flow |
| Answer» E. | |
| 11. |
The stagnation pressure can be visualized as the pressure we feel when we ride along the gas molecules at the local flow velocity. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 12. |
The pressure which is a result of the random motion of the gas molecules is ______ |
| A. | Total Pressure |
| B. | Stagnation Pressure |
| C. | Dynamic Pressure |
| D. | Static Pressure |
| Answer» E. | |