MCQOPTIONS
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MCQOPTIONS
This section includes 14 Mcqs, each offering curated multiple-choice questions to sharpen your Manufacturing Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
FLANK_WEAR_OCCURS_MAINLY_ON_THE?$ |
| A. | nose part, front relief face and side relief face of the cutting tool |
| B. | face of the cutting tool at a short distance from the cutting edge only |
| C. | cutting edge only |
| D. | front face only |
| Answer» B. face of the cutting tool at a short distance from the cutting edge only | |
| 2. |
The tool life is said to be over if$ |
| A. | poor surface finish is obtained |
| B. | there is sudden increase in cutting forces and power consumption |
| C. | overheating and fuming due to heat of friction starts |
| D. | all of the mentioned |
| Answer» E. | |
| 3. |
Tool_life_is_measured_by_the$ |
| A. | number of pieces machined between tool sharpenings |
| B. | time the tool is in contact with the job |
| C. | volume of material removed between tool sharpenings |
| D. | all of the mentioned |
| Answer» E. | |
| 4. |
Using the Taylor Equation for tool life and letting n = 0.5 and C = 120, calculate the percentage increase in tool life when the cutting speed is reduced by 50%. |
| A. | 100% |
| B. | 200% |
| C. | 300% |
| D. | 400% |
| Answer» D. 400% | |
| 5. |
The relation between the tool life(T) in minutes and cutting speed (V) in m/min is |
| A. | V<sup>n</sup>T = C |
| B. | VT<sup>n</sup> = C |
| C. | V<sup>n</sup>/T = C |
| D. | V/T<sup>n</sup> = C |
| Answer» C. V<sup>n</sup>/T = C | |
| 6. |
Tool life is generally better when |
| A. | grain size of the metal is large |
| B. | grain size of the metal is small |
| C. | hard constituents are present in the micro structure of the tool material |
| D. | none of the mentioned |
| Answer» B. grain size of the metal is small | |
| 7. |
The tool may fail due t? |
| A. | cracking at the cutting edge due to thermal stresses |
| B. | chipping of the cutting edge |
| C. | plastic deformation of the cutting edge |
| D. | all of the mentioned |
| Answer» E. | |
| 8. |
Crater wear is usually found while machining ductile materials. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
Crater wear leads to |
| A. | increase in cutting temperature |
| B. | weakening of tool |
| C. | friction and cutting forces |
| D. | all of the mentioned |
| Answer» E. | |
| 10. |
Crater wear is mainly due to the phenomenon is known as |
| A. | adhesion of metals |
| B. | oxidation of metals |
| C. | diffusion of metals |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 11. |
Flank wear is due to the abrasive action of hard mis-constituents. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 12. |
Crater wear is predominant in |
| A. | carbon steels |
| B. | tungsten carbide tools |
| C. | high speed steel tools |
| D. | ceramic tools |
| Answer» C. high speed steel tools | |
| 13. |
Flank wear depends upon the |
| A. | hardness of the work and tool material at the operating temperature |
| B. | amount and distribution of hard constituents in the work material |
| C. | degree of strain hardening in the chip |
| D. | none of the mentioned |
| Answer» C. degree of strain hardening in the chip | |
| 14. |
Crater wear occurs mainly on the |
| A. | nose part, front relief face and side relief face of the cutting tool |
| B. | face of the cutting tool at a short distance from the cutting edge only |
| C. | cutting edge only |
| D. | front face only |
| Answer» C. cutting edge only | |