MCQOPTIONS
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MCQOPTIONS
This section includes 12 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 wall thickness in millimeter preferred between cylinder bores in a hybrid liner? |
| A. | 4 |
| B. | 5 |
| C. | 3 |
| D. | 2 |
| Answer» D. 2 | |
| 2. |
Which of the following results in a decrease in the scuffing near the sealing ring area? |
| A. | Torque |
| B. | Enthalpy |
| C. | Engine speed |
| D. | Running clearance |
| Answer» E. | |
| 3. |
11.Which of the following technique is used to limit the crank formation in a hybrid liner? |
| A. | Presence of a water channel |
| B. | Presence of excess material |
| C. | Presence of pressure relief valve |
| D. | Presence of vent holes |
| Answer» B. Presence of excess material | |
| 4. |
What is the percentage of maximum second-order bore distortion in a conventional cast-in liners? |
| A. | 11 |
| B. | 7 |
| C. | 5 |
| D. | 3 |
| Answer» B. 7 | |
| 5. |
What is the percentage of heat transfer rate in a hybrid liner? |
| A. | 50% |
| B. | 90% |
| C. | 30% |
| D. | 70% |
| Answer» D. 70% | |
| 6. |
What is the maximum pressure value in the bar of a hybrid liner? |
| A. | 50 |
| B. | 150 |
| C. | 200 |
| D. | 100 |
| Answer» D. 100 | |
| 7. |
Which of the following is coated outside along with a conventional cast-iron sleeve in a hybrid liner? |
| A. | Austenitic steel 21-4N |
| B. | Nimonic alloy |
| C. | S.A.E 1045 |
| D. | AlSI 12 alloy |
| Answer» E. | |
| 8. |
Which of the following is not the reason for the breaking of the flange in a wet liner? |
| A. | Worn out counterbore seat |
| B. | Excessive tightening of head bolts |
| C. | Uneven counterbore |
| D. | Damaged piston pin boss |
| Answer» E. | |
| 9. |
Which among the following material is most commonly used in the manufacturing of cylinder liner? |
| A. | Titanium |
| B. | Copper |
| C. | Brass |
| D. | Grey cast iron |
| Answer» E. | |
| 10. |
Which type of fit is used with the block in a wet liner? |
| A. | Slip fit |
| B. | Press-fit |
| C. | Friction fit |
| D. | Hydraulic dilation |
| Answer» B. Press-fit | |
| 11. |
Which type of casting process is used to cast cylinder liners? |
| A. | Centrifugal casting |
| B. | Investment casting |
| C. | Die casting |
| D. | Sand casting |
| Answer» B. Investment casting | |
| 12. |
Which among the following material is plated on the cylinder liner to improve the resistance to corrosion and wear? |
| A. | Cast iron |
| B. | Chromium |
| C. | Zinc |
| D. | Lead |
| Answer» C. Zinc | |