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. |
Which material is coated on the piston to increase the service life? |
| A. | Tin |
| B. | Zinc |
| C. | Lead |
| D. | Cadmium |
| Answer» B. Zinc | |
| 2. |
Which if the following is defined as the distance between the axis of the piston pin and top of the piston crown? |
| A. | Clearance volume |
| B. | Swept volume |
| C. | Compression height |
| D. | Detonation length |
| Answer» D. Detonation length | |
| 3. |
Which of the following is not a reason for piston failure? |
| A. | Insufficient lubrication |
| B. | Overloading the engine |
| C. | Detonation |
| D. | Spark plug misfire |
| Answer» E. | |
| 4. |
Which of the following part of the piston is shown in the arrow below? |
| A. | Crown |
| B. | Skirt |
| C. | Piston rings |
| D. | Piston pin bossView Answer |
| Answer» D. Piston pin bossView Answer | |
| 5. |
Which of the following is the main reason for a burnt piston? |
| A. | Hot air intake |
| B. | Leak of coolant |
| C. | More clearance |
| D. | Detonation |
| Answer» E. | |
| 6. |
Which among the following type is named when the silicon content is 12% in an aluminum alloy? |
| A. | Eutectic |
| B. | Hyper-eutectic |
| C. | Hypo-eutectic |
| D. | Pearlite |
| Answer» B. Hyper-eutectic | |
| 7. |
Which is the material used to wound on a wire wound piston? |
| A. | Steel |
| B. | Lead |
| C. | Zinc |
| D. | Magnesium |
| Answer» B. Lead | |
| 8. |
Which of the following is not a method to avoid piston slap? |
| A. | Taper piston |
| B. | Piston with T-slots |
| C. | Offset piston |
| D. | Increase the size of the piston skirt |
| Answer» E. | |
| 9. |
Which among the following casting process is used in the casting of the piston? |
| A. | Investment casting |
| B. | Low-pressure casting |
| C. | Sand casting |
| D. | Gravity die casting |
| Answer» E. | |
| 10. |
By adding which of the following material to aluminum alloy piston slap can be avoided? |
| A. | Silicon |
| B. | Zinc |
| C. | Copper |
| D. | Lead |
| Answer» B. Zinc | |
| 11. |
Which among the following is the correct formula of the compression ratio in terms of clearance volume and swept volume? |
| A. | R= swept volume+clearance volume |
| B. | R=swept volume-clearance volume |
| C. | R=2×(swept volume-clearance volume) |
| D. | R=(swept volume+clearance volum |
| E. | R=(swept volume+clearance volume)/clearance volume |
| Answer» E. R=(swept volume+clearance volume)/clearance volume | |
| 12. |
Which among the following is provided on the pistol in a two-stroke engine to increase the compression ratio? |
| A. | Flat spot |
| B. | Deflector |
| C. | Damper |
| D. | Nozzle |
| Answer» C. Damper | |
| 13. |
Which are the two materials used in a bimetallic piston? |
| A. | Copper and steel |
| B. | Magnesium and aluminum |
| C. | Steel and cast iron |
| D. | Aluminum and steel |
| Answer» E. | |