Powder Metallurgy MCQ Questions and Answers

1.
Which of the following components can be manufactured by powder metallurgy technique?

A. Cams

B. engine disks

C. connecting rod

D. All of these

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2.
Advantages of Casting are: (I) Can create complex part geometries, 3-D shapes (II) Can create both external and internal shapes and large hollow shapes (III) It is a near net shape process for small to large parts (IV) Very good mechanical strength can be obtained for as-cast component

A. III is true, but I, II and IV are not true

B. I and IV are true, but II and III are not true

C. I, II, III and IV are not true

D. I, II and III are true, but IV is not true

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3.
During hot isostatic pressing of powder particulates, the pressure and temperatures are

A. in the range of 4 to 30MPa and 500 to 2200°C respectively

B. in the range of 40 to 300MPa and 500 to 2200°C respectively

C. in the range of 30 to 300MPa and 500 to 2200°C respectively

D. in the range of 40 to 300MPa and 50 to 220°C respectively

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4.
Density in sintering product is improved by

A. Hot pressing

B. Cold pressing

C. Coining

D. Both B and C

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5.
In case of binary alloys, when the tangent touches plot for two phases, it means that at that composition, chemical potential of component A in both phases are

A. Same

B. different

C. undecided

D. all of these

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6.
In ultrarapid solidification process of powder production, the rate of cooling is

A. 100 C/s

B. 1000 C/s

C. 200 C/s

D. 400 C/s

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7.
Powder Metallurgy is the branch of metallurgy in which parts are produced by

A. Solidification of liquid metal

B. Solidification of gas metal

C. Sintering of powder

D. None of these

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8.
The statement of sintering "The thermal treatment of a powder or compact, at a temperature below the melting point of the main constituent for the purpose of increasing its strength" is given by

A. F. Thrummler

B. ISO 3252

C. G. C. Kuczynski

D. None of these

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9.
During intermediate steps the pores are situated at the intersection of three or four

A. unit cell

B. atoms

C. grain boundaries

D. molecules

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10.
For random distribution of particle size, standard deviation is defined in such a way that:

A. Any number od data may lie within -1σ to +1σ

B. At least 75% data lie within -1σ to +1σ

C. At least 88.8% data lie within -2σ to + 2σ

D. At least 75% data lie within -3σ to + 3σ

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Powder Metallurgy MCQ Questions and Answers | Metallurgical Engineering

1. Which of the following components can be manufactured by powder metallurgy technique?

Answer & Solution

2. Advantages of Casting are: (I) Can create complex part geometries, 3-D shapes (II) Can create both external and internal shapes and large hollow shapes (III) It is a near net shape process for small to large parts (IV) Very good mechanical strength can be obtained for as-cast component

Answer & Solution

3. During hot isostatic pressing of powder particulates, the pressure and temperatures are

Answer & Solution

4. Density in sintering product is improved by

Answer & Solution

5. In case of binary alloys, when the tangent touches plot for two phases, it means that at that composition, chemical potential of component A in both phases are

Answer & Solution

6. In ultrarapid solidification process of powder production, the rate of cooling is

Answer & Solution

7. Powder Metallurgy is the branch of metallurgy in which parts are produced by

Answer & Solution

8. The statement of sintering "The thermal treatment of a powder or compact, at a temperature below the melting point of the main constituent for the purpose of increasing its strength" is given by

Answer & Solution

9. During intermediate steps the pores are situated at the intersection of three or four

Answer & Solution

10. For random distribution of particle size, standard deviation is defined in such a way that:

Answer & Solution

1.
Which of the following components can be manufactured by powder metallurgy technique?

2.
Advantages of Casting are: (I) Can create complex part geometries, 3-D shapes (II) Can create both external and internal shapes and large hollow shapes (III) It is a near net shape process for small to large parts (IV) Very good mechanical strength can be obtained for as-cast component

3.
During hot isostatic pressing of powder particulates, the pressure and temperatures are

4.
Density in sintering product is improved by

5.
In case of binary alloys, when the tangent touches plot for two phases, it means that at that composition, chemical potential of component A in both phases are

6.
In ultrarapid solidification process of powder production, the rate of cooling is

7.
Powder Metallurgy is the branch of metallurgy in which parts are produced by

8.
The statement of sintering "The thermal treatment of a powder or compact, at a temperature below the melting point of the main constituent for the purpose of increasing its strength" is given by

9.
During intermediate steps the pores are situated at the intersection of three or four

10.
For random distribution of particle size, standard deviation is defined in such a way that: