MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
The motor vehicle crank shaft is made by which of the following method? |
| A. | Forging |
| B. | Casting |
| C. | Extrusion |
| D. | Sheet metal formation |
| Answer» B. Casting | |
| 2. |
The base of heavy machinery is made by which of the following metal? |
| A. | Stainless Steel |
| B. | Mild steel |
| C. | Cast iron |
| D. | Nickel |
| Answer» D. Nickel | |
| 3. |
The orange peeling effect of the deep-drawn cup can be eliminated most effectively by _______ |
| A. | Increasing the thickness of the sheet |
| B. | Decreasing the thickness of sheet |
| C. | Using large grain size sheet |
| D. | Using smaller grain size sheet |
| Answer» E. | |
| 4. |
In which of the following method, the female die is not required? |
| A. | Sheet metal rolling |
| B. | Tube extrusion |
| C. | Stretch forming |
| D. | Pressure die forging |
| Answer» D. Pressure die forging | |
| 5. |
If the minimum bend radius of the material is small, this indicates that the ________ |
| A. | Metal is highly ductile in nature |
| B. | Metal is highly brittle in nature |
| C. | Metal will easily crack on bending |
| D. | Metal will have high tensile strength |
| Answer» B. Metal is highly brittle in nature | |
| 6. |
The conventional strain along the length of the sheet which is subjected to bending is given as ____Assume height of sheet is h and radius of the bend is R. |
| A. | R/h |
| B. | 1/[(2R/h) +1] |
| C. | 1/(R+h) |
| D. | R+h/h |
| Answer» C. 1/(R+h) | |
| 7. |
The following diagram shows the steel plate bend along its edge plastically. The neutral axis (an axis with zero strain) will be indicated by which of the following _______ (where line 2 is in the centre of the sheet). |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | Need further information |
| Answer» D. Need further information | |
| 8. |
A steel sheet of thickness 25 mm is sheared with a knife, and the fracture length is 50 mm. Find the shear force required, if the tensile strength of steel is 250 MPa? |
| A. | 500 kN |
| B. | 250 kN |
| C. | 218 kN |
| D. | 238 kN |
| Answer» D. 238 kN | |
| 9. |
The maximum shear force required to cause the fracture on any metal surface is empirically defined as _____________(Where σu – ultimate tensile strength of the metal, h-sheet thickness, L- total length of the sheared edge) |
| A. | σuhL |
| B. | 0.5σuhL |
| C. | 0.7σuhL |
| D. | σuh/L |
| E. | σuhLb) 0.5σuhLc) 0.7σuhLd) σuh/L |
| Answer» D. σuh/L | |
| 10. |
The clearance between the stationary blade and moving blade should always be low to obtain a smooth fractured surface. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
For ductile material to cause shearing, the penetration of tool along the thickness should be _____ whereas for brittle material it is ________ |
| A. | high, low |
| B. | low, high |
| C. | low, moderate |
| D. | moderate, high |
| Answer» B. low, high | |
| 12. |
The tank head is manufactured by which of the following sheet metal forming process? |
| A. | Wrap forming |
| B. | Rubber forming |
| C. | Spinning |
| D. | Wiper type bending |
| Answer» D. Wiper type bending | |
| 13. |
The rubber hydroforming is the method to manufacture the rubber or the polymer part by deformation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
The washer for the mechanical joint is an example of which of the following process? |
| A. | Progressive forming |
| B. | Piercing |
| C. | Punching |
| D. | Blanking |
| Answer» B. Piercing | |