MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For an extruded material like a rod, the outer surface of the product will be _______ while the inner surface will be __________ and surfaces appearance is also _______ |
| A. | hard, soft, smooth |
| B. | soft, hard, smooth |
| C. | hard, soft, rough |
| D. | soft, hard, rough |
| Answer» B. soft, hard, smooth | |
| 2. |
If the initial temperature of the billet is high, the extrusion pressure will be __________ as compared to billet having a lower temperature. |
| A. | higher |
| B. | lower |
| C. | same |
| D. | cannot predict |
| Answer» C. same | |
| 3. |
The sticking between the workpiece and the die occurs when the feed rate is very high, and there is a significant difference between static and dynamic friction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The total capacity of a hammer in forging is not dependent of _____________ |
| A. | weight of hammer |
| B. | velocity of hammer |
| C. | height of falling |
| D. | type of power supply |
| Answer» E. | |
| 5. |
The force required for in direct extrusion is ____________ direct extrusion process. |
| A. | greater than |
| B. | lesser than |
| C. | same as |
| D. | depends upon the material |
| Answer» C. same as | |
| 6. |
The brittle material is extruded in the hydrostatic pressure extrusion process. Whereas ductile metal can be extruded through normal operations. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Nature of force in wire drawing process is ___________ |
| A. | tensile |
| B. | compressive |
| C. | both tensile and compressive |
| D. | tensile, compressive and shear-type |
| Answer» B. compressive | |
| 8. |
The nozzle for the extrusion process is manufactured using which of the following material? |
| A. | Copper |
| B. | Brass |
| C. | White cast iron |
| D. | Grey cast iron |
| Answer» D. Grey cast iron | |
| 9. |
The production of the toothpaste tube is made by which of the following process? |
| A. | Forging |
| B. | Tube extrusion |
| C. | Impact extrusion |
| D. | Sheet metal forming |
| Answer» D. Sheet metal forming | |
| 10. |
For very thin diameter wire, the lubricant used is in the form of ___________ |
| A. | soap |
| B. | molten glass |
| C. | electrolyte coating of copper |
| D. | phosphate coating of manganese |
| Answer» D. phosphate coating of manganese | |
| 11. |
In the indirect extrusion process, the ram and extruded product both travel in the same direction. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
In the forward extrusion process, the speed of the extruded product is __________ the speed of the ram. |
| A. | lower than |
| B. | greater than |
| C. | same as |
| D. | depends upon the material softness |
| Answer» C. same as | |