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. |
Which is the effective inhibitor of pre-ignition? |
| A. | alcohol |
| B. | water |
| C. | lead |
| D. | none of the mentioned |
| Answer» C. lead | |
| 2. |
The calorific value of alcohols is _____________ in diesel oil. |
| A. | higher than |
| B. | lower than |
| C. | same |
| D. | none of the mentioned |
| Answer» C. same | |
| 3. |
The compression ratio of alcohol fuel lies between ___________ |
| A. | 11:1 to 13:1 |
| B. | 7:1 to 9:1 |
| C. | 5:1 to 7:1 |
| D. | none of the mentioned |
| Answer» B. 7:1 to 9:1 | |
| 4. |
Alcohols alone cannot be used in CI engines as ___________ |
| A. | their self ignition temperature is high |
| B. | latent heat of vaporization is high |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
Anti-knock characteristics of alcohol when compared to gasoline is? |
| A. | higher |
| B. | lower |
| C. | equal |
| D. | none of the mentioned |
| Answer» B. lower | |
| 6. |
Methanol by itself is not a good CI engine fuel because ___________ |
| A. | its octane number is high |
| B. | its cetane number is low |
| C. | all of the mentioned |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 7. |
Small amount of gasoline is added to alcohol to ___________ |
| A. | reduce the emission |
| B. | to increase the power output |
| C. | to increase the efficiency |
| D. | to improve cold weather starting |
| Answer» E. | |
| 8. |
Stoichiometric air-fuel ratio of alcohol when compared to gasoline is? |
| A. | higher |
| B. | lower |
| C. | equal |
| D. | none of the mentioned |
| Answer» C. equal | |
| 9. |
What is the mixture of Gasohol? |
| A. | 90% ethanol + 10% gasoline |
| B. | 10% ethanol + 90% gasoline |
| C. | 40% ethanol + 60% gasoline |
| D. | 50% ethanol + 50% gasoline |
| Answer» C. 40% ethanol + 60% gasoline | |
| 10. |
Which of the following statement is not correct with respect to alcohols as alternate fuel in IC engines? |
| A. | anti-knock characteristics of alcohol is poor |
| B. | alcohol contains about half the heat energy of gasoline/litre |
| C. | alcohol does not vaporize as easily as gasoline |
| D. | alcohols are corrosive in nature |
| Answer» B. alcohol contains about half the heat energy of gasoline/litre | |