MCQOPTIONS
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MCQOPTIONS
This section includes 13 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 large-sized hot forging material is cooled very slowly after working. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
The flaking of forged material is due to the presence of which of the following element? |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Sulfur |
| D. | Nitrogen |
| Answer» C. Sulfur | |
| 3. |
The given material shown in the figure, have certain inclusion in a specific direction. Choose the best direction for the forging of the material? |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 4. |
The concave die is effective in reducing the secondary tensile stress in the material and also to avoid the central cracking. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 5. |
Which is the primary element to cause the hot shortness in the metal? |
| A. | Oxygen |
| B. | Carbon |
| C. | Sulfur |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 6. |
If the spread ratio coefficient of the particular metal under forging is 0, this indicates that _____ |
| A. | all the energy is gone in elongation |
| B. | all the energy has gone in spread the width |
| C. | the thickness of the material reached zero |
| D. | the thickness of the material remains unchanged |
| Answer» B. all the energy has gone in spread the width | |
| 7. |
If the spread ratio coefficient of the particular metal under forging is 1, this indicates that _____ |
| A. | all the energy is gone in elongation |
| B. | all the energy went in spread the width |
| C. | the thickness of the material reached zero |
| D. | the thickness of the material remains unchanged |
| Answer» C. the thickness of the material reached zero | |
| 8. |
The coefficient of spread is not given by which mathematical expression? |
| A. | S=Width elongation/ Thickness contraction |
| B. | S=ln(w1/wo)/ln(ho/h1) |
| C. | S=1-[length elongation/ thickness contraction] |
| D. | S=length elongation/thickness contraction |
| Answer» E. | |
| 9. |
The cogging is related to which of the following metal working/forging operation? |
| A. | Open die forging |
| B. | Closed die forging |
| C. | Press forging |
| D. | Impact forging |
| Answer» B. Closed die forging | |
| 10. |
The counterblow hammer is competent solution to reduce the problem of ground shock and noise while using the forging hammer. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 11. |
For closed die forging which of the following hammer suits best? |
| A. | Drop hammer |
| B. | HERF |
| C. | Power hammer |
| D. | Blow hammer |
| Answer» D. Blow hammer | |
| 12. |
Which of the following forging hammer has the highest velocity on impact? |
| A. | Gravity drop hammer |
| B. | Power drop hammer |
| C. | Hydraulic press |
| D. | HERF |
| Answer» E. | |
| 13. |
Which of the following forging hammer has the lowest velocity of impact? |
| A. | Gravity drop hammer |
| B. | Power drop hammer |
| C. | Hydraulic press |
| D. | HERF |
| Answer» D. HERF | |