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. |
A stoichiometric air fuel ratio is ____________ |
| A. | chemically correct mixture |
| B. | lean mixture |
| C. | rich mixture for idling |
| D. | rich mixture for over loads |
| Answer» B. lean mixture | |
| 2. |
Diesel engine can work on very lean air fuel ratio of the order of 30:1. A petrol engine can also work on such a lean ratio provided? |
| A. | it is properly designed |
| B. | best quality fuel is used |
| C. | can not work as it is impossible |
| D. | flywheel size is proper |
| Answer» D. flywheel size is proper | |
| 3. |
The following volume of air is required for consuming 1 litre of fuel by a four stroke engine is? |
| A. | 1m<sup>3</sup> |
| B. | 2.5m<sup>3</sup> |
| C. | 5-6m<sup>3</sup> |
| D. | 9-10m<sup>3</sup> |
| Answer» E. | |
| 4. |
For maximum power generation, the air fuel ratio for a petrol engine of vehicles, is of the order of ____________ |
| A. | 9:1 |
| B. | 12:1 |
| C. | 15:1 |
| D. | 18:1 |
| Answer» C. 15:1 | |
| 5. |
Air fuel ratio at which a petrol engine can not work is? |
| A. | 8:1 |
| B. | 10:1 |
| C. | 15:1 |
| D. | 20:1 and less |
| Answer» E. | |
| 6. |
Air fuel ratio for idling speed of a petrol engine is approximately ____________ |
| A. | 1:1 |
| B. | 5:1 |
| C. | 10:1 |
| D. | 15:1 |
| Answer» D. 15:1 | |
| 7. |
The theoretically correct air fuel ratio for petrol engine is of the order of ____________ |
| A. | 6:1 |
| B. | 9:1 |
| C. | 12:1 |
| D. | 15:1 |
| Answer» E. | |
| 8. |
The fuel air ratio in a petrol engine fitted with suction carburettor, operating with dirty air filter as compared to clean filter will be ____________ |
| A. | higher |
| B. | lower |
| C. | remain unaffected |
| D. | none of the mentioned |
| Answer» B. lower | |
| 9. |
Fuel consumption of diesel engines is not guaranteed at one quarter load because at such low loads ____________ |
| A. | the friction is high |
| B. | the friction is unpredictable |
| C. | the small difference in cooling water temperature or in internal friction has a disproportionate effect |
| D. | the engine is rarely operated |
| Answer» D. the engine is rarely operated | |
| 10. |
The air fuel ratio of the petrol engine is controlled by ____________ |
| A. | fuel pump |
| B. | governor |
| C. | injector |
| D. | carburettor |
| Answer» E. | |