MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
What is the thickness of the crankweb when the diameter of the crankpin is 50mm? |
| A. | 12.5 to 77.5mm |
| B. | 22.5 to 37.5mm |
| C. | 28.7 to 48.5mm |
| D. | 31.9 to 34.0mm |
| Answer» C. 28.7 to 48.5mm | |
| 2. |
In the formula Mt=Pt r, what is Pt? |
| A. | Vertical component |
| B. | Tangential component |
| C. | Horizontal component |
| D. | Normal component |
| Answer» C. Horizontal component | |
| 3. |
When the crank web is subjected to stresses, bending stress acts on which plane? |
| A. | Horizontal |
| B. | Both horizontal and vertical |
| C. | Vertical |
| D. | normal |
| Answer» C. Vertical | |
| 4. |
Does the crank pin act as a which beam inside crankshaft? |
| A. | Simply supported |
| B. | Cantilever |
| C. | Overhanging |
| D. | Roller supported |
| Answer» C. Overhanging | |
| 5. |
In the formula Mb=Pp[0.75lc+t+0.5l1], what is l1? |
| A. | Length of shaft |
| B. | Length of bearing |
| C. | Length of connecting rod |
| D. | Length of crank |
| Answer» C. Length of connecting rod | |
| 6. |
Calculate the bending moment when load is 176700N, length of bearing is 265mm, thickness is 90mm and length of crank pin is 120mm? |
| A. | 8.738 10<sup>6</sup>N-mm |
| B. | 89.3 10<sup>6</sup>N-m |
| C. | 55.21 10<sub>6</sub>N-mm |
| D. | 45.89 10<sup>6</sup>N-m |
| Answer» D. 45.89 10<sup>6</sup>N-m | |
| 7. |
Calculate the bearing pressure when the reaction at 1 is 176700N and the length and diameter of crankpin are 120mm and 150mm. |
| A. | 8.15N/mm<sup>2</sup> |
| B. | 7.89N/mm<sup>2</sup> |
| C. | 5.67N/mm<sup>2</sup> |
| D. | 9.81N/mm<sup>2</sup> |
| Answer» E. | |
| 8. |
In the formula Pb= ( frac{R_1}{d_1l_1} ), what is Pb? |
| A. | Bearing pressure |
| B. | Torsional moment |
| C. | Force |
| D. | Shear force |
| Answer» B. Torsional moment | |
| 9. |
Calculate the length of the bearing when the diameter of crankpin is 50mm? |
| A. | 35 to 55mm |
| B. | 87 to 90mm |
| C. | 75 to 100mm |
| D. | 91 to 109mm |
| Answer» D. 91 to 109mm | |
| 10. |
The reactions at the bearing 1 and 2 are due to which part of the engine? |
| A. | Weight of camshaft |
| B. | Weight of connecting rod |
| C. | Weight of flywheel |
| D. | Weight of the gears |
| Answer» D. Weight of the gears | |
| 11. |
In the design of side crankshaft at the TDC position, the engine is placed in which position? |
| A. | Vertical |
| B. | Horizontal |
| C. | Parallel |
| D. | Perpendicular |
| Answer» B. Horizontal | |
| 12. |
In the design of side crankshaft at TDC position, the crank alone is at which position? |
| A. | BDC position |
| B. | ODC position |
| C. | TDC position |
| D. | HDF position |
| Answer» D. HDF position | |
| 13. |
In the design of side crankshaft at TDC position, the driven belt is assumed to be in which direction? |
| A. | Vertical |
| B. | Angled |
| C. | Horizontal |
| D. | Perpendicular |
| Answer» D. Perpendicular | |
| 14. |
Which type of crankshaft is supported by two bearings? |
| A. | Top crankshaft |
| B. | Bottom crankshaft |
| C. | Side crankshaft |
| D. | Center crankshaft |
| Answer» D. Center crankshaft | |