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. |
It is assumed that all the processes of an air standard cycle are ___________ |
| A. | reversible |
| B. | irreversible |
| C. | adiabatic |
| D. | isothermal |
| Answer» B. irreversible | |
| 2. |
The working medium of an air standard cycle has constant ___________ throughout the cycle. |
| A. | pressure |
| B. | volume |
| C. | specific heat |
| D. | mass |
| Answer» D. mass | |
| 3. |
The volumetric efficiency of a well designed engine may be ___________ |
| A. | 30 to 40% |
| B. | 40 to 60% |
| C. | 60 to 70% |
| D. | 75 to 90% |
| Answer» E. | |
| 4. |
The thermal efficiency of diesel engines on weak mixtures is ___________ |
| A. | unaffected |
| B. | lower |
| C. | higher |
| D. | dependent on other factors |
| Answer» D. dependent on other factors | |
| 5. |
The thermal efficiency of diesel engines is about ___________ |
| A. | 15% |
| B. | 30% |
| C. | 50% |
| D. | 70% |
| Answer» E. | |
| 6. |
The thermal efficiency of petrol and gas engines is about ___________ |
| A. | 15% |
| B. | 30% |
| C. | 50% |
| D. | 70% |
| Answer» C. 50% | |
| 7. |
If the compression ratio in I.C. engine increases, then its thermal efficiency will ___________ |
| A. | increase |
| B. | decrease |
| C. | remain same |
| D. | none of the mentioned |
| Answer» B. decrease | |
| 8. |
The specific fuel consumption per B.P. hour for a diesel engine is about ___________ |
| A. | 0.2 kg |
| B. | 0.25 kg |
| C. | 0.3 kg |
| D. | 0.35 kg |
| Answer» B. 0.25 kg | |
| 9. |
The specific fuel consumption per B.P. hour for a petrol engine is about ___________ |
| A. | 0.2 kg |
| B. | 0.25 kg |
| C. | 0.3 kg |
| D. | 0.35 kg |
| Answer» C. 0.3 kg | |
| 10. |
The air standard efficiency of an I.C. engine depends on _____________ |
| A. | fuel used |
| B. | speed of engine |
| C. | compression ratio |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |