MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Automotive Engine Components Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Find the Radial width of the piston ring, when D=250mm, σt=100MPa, and pw=0.03N/mm2? |
| A. | 5.5mm |
| B. | 7.5mm |
| C. | 4.5mm |
| D. | 6.5mm |
| Answer» C. 4.5mm | |
| 2. |
Find the limit on the minimum axial thickness when D=150mm and Z=7? |
| A. | 1.5mm |
| B. | 3.7mm |
| C. | 2.14mm |
| D. | 4.87mm |
| Answer» D. 4.87mm | |
| 3. |
Find the range of axial thickness of the piston ring, when b=7.5mm? |
| A. | 3.5 to 4mm |
| B. | 4.6 to 3mm |
| C. | 5.78 to 8.4mm |
| D. | 5.25 to 7.5mm |
| Answer» E. | |
| 4. |
In the formula b=D\(\sqrt{\frac{3P_w}{\sigma_t}}\), what is the unit of Pw? |
| A. | N/mm2 |
| B. | N/m |
| C. | KN/mm |
| D. | N/m2 |
| Answer» B. N/m | |
| 5. |
The compression rings have which cross-section? |
| A. | Triangular cross-section |
| B. | Circular cross-section |
| C. | Rectangular cross-section |
| D. | Square cross-section |
| Answer» D. Square cross-section | |
| 6. |
Usually how many piston rings are present in a petrol engine? |
| A. | 1 |
| B. | 3 to 4 |
| C. | 7-10 |
| D. | 2 |
| Answer» C. 7-10 | |
| 7. |
Piston rings are usually made of which material? |
| A. | Cast iron |
| B. | Nichrome |
| C. | Tungsten |
| D. | Silver |
| Answer» B. Nichrome | |
| 8. |
What is the function of the oil ring? |
| A. | To allow charge to the crankcase |
| B. | To increase friction |
| C. | To reduce the frictional losses |
| D. | To compress charge |
| Answer» D. To compress charge | |
| 9. |
What is the function of the compression ring? |
| A. | To seal between piston and cams |
| B. | To seal between cylinder and crank |
| C. | To seal between cylinder and piston |
| D. | To seal between crank and cams |
| Answer» D. To seal between crank and cams | |
| 10. |
Which are the two types of piston rings in the piston? |
| A. | Bearing and compression rings |
| B. | O-ring and oil rings |
| C. | O-ring and bearing |
| D. | Compression rings and oil rings |
| Answer» E. | |