MCQOPTIONS
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MCQOPTIONS
This section includes 17 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. |
How much pressure ratio makes one Mach number? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 2. |
Maximum achievable velocity of a gas is directly proportional to__________ |
| A. | Specific heat |
| B. | Deceleration |
| C. | Velocity |
| D. | Pressure |
| Answer» B. Deceleration | |
| 3. |
Which among the following is an example of a converging-diverging nozzle? |
| A. | De Laval nozzle |
| B. | High velocity nozzle |
| C. | Magnetic nozzle |
| D. | Vacuum nozzle |
| Answer» B. High velocity nozzle | |
| 4. |
The area of the duct is either maximum or minimum when the_________ |
| A. | Mach number = 1 |
| B. | Mach > 1 |
| C. | Mach = 0 |
| D. | Mach < 0 |
| Answer» B. Mach > 1 | |
| 5. |
Maximum achievable velocity of a gas is directly proportional to__________$ |
| A. | Specific heat |
| B. | Deceleration |
| C. | Velocity |
| D. | Pressure |
| Answer» B. Deceleration | |
| 6. |
Which_among_the_following_is_an_example_of_a_converging-diverging_nozzle?$ |
| A. | De Laval nozzle |
| B. | High velocity nozzle |
| C. | Magnetic nozzle |
| D. | Vacuum nozzle |
| Answer» B. High velocity nozzle | |
| 7. |
Oblique shock waves are ______ to the local flow. |
| A. | Parallel |
| B. | Perpendicular |
| C. | Less than 90 degrees |
| D. | Independent |
| Answer» B. Perpendicular | |
| 8. |
Normal shock waves are_______ to the local flow. |
| A. | Parallel |
| B. | Perpendicular |
| C. | Same |
| D. | Independent |
| Answer» C. Same | |
| 9. |
How_much_pressure_ratio_makes_one_Mach_number? |
| A. | 0 |
| B. | 1 |
| C. | 2 |
| D. | 3 |
| Answer» D. 3 | |
| 10. |
The area of the duct is either maximum or minimum when the________? |
| A. | Mach number = 1 |
| B. | Mach > 1 |
| C. | Mach = 0 |
| D. | Mach < 0 |
| Answer» B. Mach > 1 | |
| 11. |
What happens to velocity in the diverging duct? |
| A. | Increases |
| B. | Decreases |
| C. | Same |
| D. | Independent |
| Answer» C. Same | |
| 12. |
What happens to velocity in the converging duct? |
| A. | Increases |
| B. | Decreases |
| C. | Same |
| D. | Independent |
| Answer» B. Decreases | |
| 13. |
The fluid speed through the nozzle is altered with________ |
| A. | Acceleration |
| B. | Deceleration |
| C. | Constant speed |
| D. | Zero |
| Answer» B. Deceleration | |
| 14. |
Ratio of duct length to width length in a compressible flow is_______ |
| A. | More than 5 |
| B. | Less than 5 |
| C. | More than or equal to 5 |
| D. | Less than or equal to 5 |
| Answer» E. | |
| 15. |
The compressible flow is assumed to be _____________ |
| A. | Isentropic |
| B. | Adiabatic |
| C. | Polytropic |
| D. | Isentropic and adiabatic |
| Answer» B. Adiabatic | |
| 16. |
In a one-dimensional flow, the gas flows through one spatial dimension, namely its length. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 17. |
What is the Mach number at room temperature? |
| A. | 310 m/s |
| B. | 320 m/s |
| C. | 330 m/s |
| D. | 340 m/s |
| Answer» E. | |