MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Automobile Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is octane number of natural gas? |
| A. | 60-80 |
| B. | 80-100 |
| C. | >100 |
| D. | <60 |
| Answer» C. >100 | |
| 2. |
Why methanol is not used in CI engine? |
| A. | Its octane number is high |
| B. | Its cetane number is low |
| C. | Its octane number is high and the cetane number is low |
| D. | Its octane number is low and the cetane number is high |
| Answer» D. Its octane number is low and the cetane number is high | |
| 3. |
Which of the following is the major constituent of natural gas? |
| A. | Methane |
| B. | Ethane |
| C. | Butane |
| D. | Propane |
| Answer» B. Ethane | |
| 4. |
Why alcohols cannot be used in CI engines? |
| A. | Alcohols have a high self-ignition temperature |
| B. | The latent heat of vaporization is low |
| C. | Alcohols have high self-ignition temperature and low latent heat of vaporization |
| D. | High efficiency |
| Answer» D. High efficiency | |
| 5. |
What is the major disadvantage of LPG as a fuel in the automobile? |
| A. | Reduction in the life of the engine |
| B. | Less power compared to gasoline |
| C. | Reduction in the life of the engine and less power compared to gasoline |
| D. | Knocking tendency |
| Answer» D. Knocking tendency | |
| 6. |
Which of the following is the advantage of the hydrogen as a fuel? |
| A. | High volumetric efficiency |
| B. | Low fuel cost |
| C. | No HC and CO emissions |
| D. | Relatively safe |
| Answer» D. Relatively safe | |
| 7. |
Which of the following is a disadvantage of hydrogen as a fuel in IC engine? |
| A. | Storage is easy |
| B. | Low NO<sub>x</sub> emissions |
| C. | Detonating tendency |
| D. | Easy handling |
| Answer» D. Easy handling | |
| 8. |
What is 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 | |
| 9. |
Why a small amount of gasoline is added to alcohol? |
| A. | To reduce the emission |
| B. | To increase the power output |
| C. | To increase the power efficiency |
| D. | To improve cold-weather starting |
| Answer» E. | |
| 10. |
Which of the following statements is not correct with respect to alcohols as alternate fuel? |
| A. | Anti-knock characteristics of alcohol are poor |
| B. | Alcohol contains about half the heat energy of gasoline/liter |
| 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/liter | |