MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Automotive Engine Auxiliary Systems knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the use of the additional hole present in a pintaux nozzle? |
| A. | For self-cleaning |
| B. | High-pressure relief |
| C. | It injects a small amount of fuel |
| D. | For temperature control |
| Answer» D. For temperature control | |
| 2. |
How much is the angle of spray cone in a single hole nozzle? |
| A. | 10 |
| B. | 20 |
| C. | 15 |
| D. | 17 |
| Answer» D. 17 | |
| 3. |
Which among the following is an advantage of the pintle type nozzle? |
| A. | Self-cleaning |
| B. | Uneven atomization |
| C. | Different injection angle |
| D. | Fault spraying |
| Answer» B. Uneven atomization | |
| 4. |
Which among the following is not a part of the injector? |
| A. | Nozzle |
| B. | Nozzle holder |
| C. | Spark plug |
| D. | Adjusting screw |
| Answer» D. Adjusting screw | |
| 5. |
What is the hole angle degree in an upward direction in a multi-hole nozzle? |
| A. | 10 |
| B. | 15 |
| C. | 17 |
| D. | 20 |
| Answer» E. | |
| 6. |
In which type of combustion chamber pintle type nozzle injectors are preferred? |
| A. | Pre combustion |
| B. | Open type |
| C. | Self-cleaning |
| D. | Both open type and self-cleaning |
| Answer» B. Open type | |
| 7. |
What is the operating pressure in MPa of a pintle type nozzle? |
| A. | 3-5 |
| B. | 5-7 |
| C. | 7-15 |
| D. | 17-25 |
| Answer» D. 17-25 | |
| 8. |
What is the shape of the lower pintle end in a throttling pintle type? |
| A. | Rectangle |
| B. | Truncated cone |
| C. | Sphere |
| D. | Circle |
| Answer» C. Sphere | |
| 9. |
Which of the following is not a property of a good fuel injector? |
| A. | Good atomization |
| B. | Fuel uniformity |
| C. | Faulty spraying |
| D. | Proper injection angle |
| Answer» E. | |
| 10. |
What is the opening pressure range in MPa of a hole-type nozzle? |
| A. | 5-7 |
| B. | 10-17 |
| C. | 17-34 |
| D. | 37-54 |
| Answer» D. 37-54 | |
| 11. |
In which type of combustion chamber hole-type nozzle are preferred? |
| A. | Pre-combustion |
| B. | Open type |
| C. | Both pre-combustion and self-cleaning |
| D. | Self-cleaning |
| Answer» C. Both pre-combustion and self-cleaning | |
| 12. |
For what purpose a small quantity of fuel is purposely allowed to mean between the nozzle valve and its guide? |
| A. | To control the temperature |
| B. | To control the pressure |
| C. | To lubricate |
| D. | To keep a check-in entropy |
| Answer» D. To keep a check-in entropy | |
| 13. |
By adjusting which of the following we can vary the opening fuel line pressure? |
| A. | Spring |
| B. | Rocker arms |
| C. | Rotor |
| D. | Motor |
| Answer» B. Rocker arms | |