MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Find the error in specific volume if ideal gas model is used to represent the behaviour of superheated ammonia at 40 C and 500 kPa? |
| A. | 1.5% |
| B. | 3.5% |
| C. | 4.5% |
| D. | 2.5% |
| Answer» D. 2.5% | |
| 2. |
Argon is kept in a 5 m3 tank at 30 C and 3 MPa. Determine the mass using compressibility factor. |
| A. | 208.75 kg |
| B. | 308.75 kg |
| C. | 303.75 kg |
| D. | 203.75 kg |
| Answer» C. 303.75 kg | |
| 3. |
The adiabatic efficiency of real compressor can be ____ |
| A. | less than unity |
| B. | greater than unity |
| C. | equal to unity |
| D. | none of the mentioned |
| Answer» C. equal to unity | |
| 4. |
The isothermal efficiency is given by |
| A. | Ws/Wc |
| B. | Ws/Wt |
| C. | Wt/Wc |
| D. | Wt/Ws |
| Answer» D. Wt/Ws | |
| 5. |
The adiabatic efficiency is given by |
| A. | Ws/Wc |
| B. | Ws/Wt |
| C. | Wt/Wc |
| D. | Wt/Ws |
| Answer» B. Ws/Wt | |
| 6. |
When isothermal compression is taken as ideal process, the energy imparted |
| A. | raises the temperature of gas |
| B. | raises the pressure of gas |
| C. | both of the mentioned |
| D. | none of the mentioned |
| Answer» C. both of the mentioned | |
| 7. |
For >n>1 and for same pressure ratio p2/p1, the maximum work is needed for |
| A. | isothermal compression |
| B. | adiabatic compression |
| C. | polytropic compression |
| D. | all need same work |
| Answer» C. polytropic compression | |