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This section includes 8 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. |
A relief valve is fitted to the main oil gallery of an engine. The purpose of this valve is to |
| A. | Limit the maximum oil pressure |
| B. | Open when the oil is hot |
| C. | Maintain the supply if the gallery becomes blocked |
| D. | Stop the oil flow to the bearings |
| Answer» B. Open when the oil is hot | |
| 2. |
On modern four stroke engines the inlet valve opens just |
| A. | Before TDC |
| B. | After TDC |
| C. | Before BDC |
| D. | After BDC |
| Answer» B. After TDC | |
| 3. |
On modern four stroke engines the exhaust valve opens just |
| A. | Before TDC |
| B. | After TDC |
| C. | Before BDC |
| D. | After BDC |
| Answer» D. After BDC | |
| 4. |
The opening and closing of a valve is respectively done by |
| A. | A cam and a spring |
| B. | A spring and a cam |
| C. | Gas pressure and cam |
| D. | Cylinder vacuum and spring |
| Answer» B. A spring and a cam | |
| 5. |
The purpose of valve clearance is to |
| A. | Allow the valve to expand |
| B. | Allow the sliding of valve in the guide |
| C. | Ensure that the valve closes fully |
| D. | Ensure that the crankshaft is free to rotate |
| Answer» D. Ensure that the crankshaft is free to rotate | |
| 6. |
The device used to measure the clearance between the valve and tappet of an IC Engine is |
| A. | Feeler gauge |
| B. | Snap gauge |
| C. | Slip gauge |
| D. | Micrometer |
| Answer» B. Snap gauge | |
| 7. |
In a diesel engine the fuel injection pressure is in the range |
| A. | 100 to 170 atm |
| B. | 60 to 70 atm |
| C. | 30 to 40 atm |
| D. | 20 to 25 atm |
| Answer» B. 60 to 70 atm | |
| 8. |
In a four stroke engine each cylinder has |
| A. | One valve |
| B. | Two valves |
| C. | Three valves |
| D. | Four valves |
| Answer» C. Three valves | |