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. |
The optimum spark timing must be retarded for the engine operating with a rich mixture. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
On which condition does the vacuum advance mechanism shift the ignition point? |
| A. | Under part-load operation |
| B. | Under full load operation |
| C. | Under no-load operation |
| D. | Under sudden acceleration |
| Answer» B. Under full load operation | |
| 3. |
Which of the following is the wrong statement? |
| A. | In the exhaust, retarded timing causes burning of the hydrocarbons |
| B. | The retarded timing improves fuel economy |
| C. | The retarded timing requires the small opening for correct burning of the fuel |
| D. | The exhaust gas temperature becomes higher due to retarded time |
| Answer» C. The retarded timing requires the small opening for correct burning of the fuel | |
| 4. |
For how many times the contact breaker must make and break the circuit for a four-cylinder engine operating at N rpm? |
| A. | N times |
| B. | 1.5N times |
| C. | N/2 times |
| D. | 2N times |
| Answer» E. | |
| 5. |
Which of the following is the disadvantage of the magneto ignition system? |
| A. | Magneto ignition system has a poor quality of spark during starting |
| B. | Magneto ignition system occupies more space |
| C. | Magneto ignition system has more maintenance problems |
| D. | Magneto ignition system is used largely in four wheels |
| Answer» B. Magneto ignition system occupies more space | |
| 6. |
Why is the Dwell meter used? |
| A. | To set the spark plug gap |
| B. | To set the ignition advance |
| C. | To set the contact breaker gap |
| D. | To set ignition timing |
| Answer» D. To set ignition timing | |
| 7. |
Which of the following is not considered while deciding the optimum firing order of the engine? |
| A. | Engine vibration |
| B. | Engine cooling |
| C. | Development of the backpressure |
| D. | Engine configuration |
| Answer» E. | |
| 8. |
What is the dwell time? |
| A. | It is the time for which the contact breaker points remain closed |
| B. | It is the time for which the contact breaker points remain open |
| C. | The time during which inlet and exhaust valves open |
| D. | The time during which inlet and exhaust valves close |
| Answer» B. It is the time for which the contact breaker points remain open | |
| 9. |
Which of the following firing order is commonly used for the four-cylinder vertical engine? |
| A. | 1-2-3-4 |
| B. | 3-4-1-2 |
| C. | 4-3-2-1 |
| D. | 1-3-4-2 |
| Answer» E. | |
| 10. |
Which instrument is used for adjusting the ignition timing? |
| A. | Accurate clock |
| B. | Tachometer |
| C. | Stopwatch |
| D. | Stroboscopic light |
| Answer» E. | |