MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Ic Engine knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The constant volume cycle is also called ___________ |
| A. | Carnot cycle |
| B. | Joule cycle |
| C. | Diesel cycle |
| D. | Otto cycle |
| Answer» E. | |
| 2. |
If the compression ratio of an engine working on Otto cycle is increased from 5 to 7, the percentage increase in efficiency will be ___________ |
| A. | 2% |
| B. | 4% |
| C. | 8% |
| D. | 14% |
| Answer» E. | |
| 3. |
If compression ratio of an engine working on Otto cycle is increased from 5 to 6, its air standard efficiency will increase by ___________ |
| A. | 1% |
| B. | 20% |
| C. | 16.67% |
| D. | 8% |
| Answer» E. | |
| 4. |
In Otto cycle, heat addition takes place at ___________ |
| A. | constant temperature |
| B. | constant pressure |
| C. | constant volume |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
The mean effective pressure of an Otto Cycle increases with an increase in ___________ |
| A. | pressure ratio |
| B. | compression ratio |
| C. | temperature ratio |
| D. | none of the mentioned |
| Answer» C. temperature ratio | |
| 6. |
What is the work output of the theoretical Otto cycle? |
| A. | increases with increase in compression ratio |
| B. | increases with increase in pressure ratio |
| C. | increases with increase in compression & pressure ratio |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 7. |
The thermal efficiency of theoretical Otto cycle ___________ |
| A. | decreases with increase in compression ratio |
| B. | increases with decrease in compression ratio |
| C. | does not depends upon the pressure ratio |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 8. |
The Otto cycle consists of ___________ |
| A. | two constant pressure processes and two constant volume processes |
| B. | two constant pressure and two constant entropy processes |
| C. | two constant volume processes and two constant entropy processes |
| D. | none of the mentioned |
| Answer» C. two constant volume processes and two constant entropy processes | |
| 9. |
The efficiency of an Otto cycle is increased by increasing ___________ |
| A. | pressure ratio |
| B. | compression ratio |
| C. | temperature ratio |
| D. | none of the mentioned |
| Answer» C. temperature ratio | |
| 10. |
The thermal efficiency of a standard Otto cycle for a compression ratio of 5.5 will be ___________ |
| A. | 25% |
| B. | 50% |
| C. | 70% |
| D. | 100% |
| Answer» C. 70% | |