MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The reference temperature To and normal temperature T can be related in terms of M by |
| A. | (To/T) = 1 + (ɣ-1)*(M2) |
| B. | (To/T) = 1 + (ɣ-1)*(M2)/2 |
| C. | (To/T) = 1 – (ɣ-1)*(M2)/2 |
| D. | (To/T) = 1 – (ɣ-1)*(M2) |
| Answer» C. (To/T) = 1 – (ɣ-1)*(M2)/2 | |
| 2. |
The reference temperature To and normal temperature T are related by |
| A. | (To/T) = 1 + (V2)/(2*cp*T) |
| B. | (To/T) = 1 – (V2)/(2*cp*T) |
| C. | (To/T) = 1 + (V2)/(cp*T) |
| D. | (To/T) = 1 – (V2)/(cp*T) |
| Answer» B. (To/T) = 1 – (V2)/(2*cp*T) | |
| 3. |
For the isentropic stagnation state, |
| A. | it is a reference state |
| B. | designated with subscript zero |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 4. |
The lower the molecular weight of fluid, ____ the value of ɣ and ____ is the sonic velocity at same temperature. |
| A. | lower, lower |
| B. | higher, higher |
| C. | lower, higher |
| D. | higher. lower |
| Answer» C. lower, higher | |
| 5. |
THE_REFERENCE_TEMPERATURE_TO_AND_NORMAL_TEMPERATURE_T_ARE_RELATED_BY?$ |
| A. | (To/T) = 1 + (V<sup>2</sup>)/(2*cp*T) |
| B. | (To/T) = 1 – (V<sup>2</sup>)/(2*cp*T) |
| C. | (To/T) = 1 + (V<sup>2</sup>)/(cp*T) |
| D. | (To/T) = 1 – (V<sup>2</sup>)/(cp*T) |
| Answer» B. (To/T) = 1 ‚Äö√Ñ√∂‚àö√ë‚àö¬® (V<sup>2</sup>)/(2*cp*T) | |
| 6. |
The reference temperature To and normal temperature T can be related in terms of M by$ |
| A. | (To/T) = 1 + (…£-1)*(M<sup>2</sup>) |
| B. | (To/T) = 1 + (…£-1)*(M<sup>2</sup>)/2 |
| C. | (To/T) = 1 – (ɣ-1)*(M<sup>2</sup>)/2 |
| D. | (To/T) = 1 – (ɣ-1)*(M<sup>2</sup>) |
| Answer» C. (To/T) = 1 ‚Äö√Ñ√∂‚àö√ë‚àö¬® (‚Äö√Ѭ∂¬¨¬£-1)*(M<sup>2</sup>)/2 | |
| 7. |
For the isentropic stagnation state? |
| A. | it is a reference state |
| B. | designated with subscript zero |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 8. |
The Mach number is given by |
| A. | (c/V)<sup>2</sup> |
| B. | (V/c)<sup>2</sup> |
| C. | V/c |
| D. | c/V |
| Answer» D. c/V | |
| 9. |
The lower the molecular weight of fluid, ____ the value of …£ and ____ is the sonic velocity at same temperature.$ |
| A. | lower, lower |
| B. | higher, higher |
| C. | lower, higher |
| D. | higher. lower |
| Answer» C. lower, higher | |
| 10. |
For an ideal gas, velocity of sound is given by |
| A. | 1/…£*R*T |
| B. | sqrt(1/…£*R*T) |
| C. | sqrt(…£/RT) |
| D. | sqrt(…£*R*T) |
| Answer» E. | |
| 11. |
The pressure wave velocity c is given by |
| A. | 1 / (dp/d(density)) |
| B. | sqrt(dp/d(density)) |
| C. | sqrt(d(density)/dp) |
| D. | (dp/d(density)) |
| Answer» C. sqrt(d(density)/dp) | |
| 12. |
Liquids are ____ and gases are ____ |
| A. | both are compressible |
| B. | both are incompressible |
| C. | incompressible, compressible |
| D. | compressible, incompressible |
| Answer» D. compressible, incompressible | |
| 13. |
A compressible fluid is one for which density changes with change in temperature, pressure or velocity. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 14. |
An incompressible fluid is one for which density does not change with change in ____ |
| A. | pressure |
| B. | temperature |
| C. | velocity |
| D. | all of the mentioned |
| Answer» E. | |