Introduction to Metallurgy MCQ Questions and Answers

1.
Which of the following are not commercially manufactured by powder metallurgy

A. Aircraft brake pads

B. Self-lubricating bearings

C. Tungsten carbide based cutting tools

D. Turbine blades

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2.
Tata salt was tested (FCC) with X-ray (0.071nm) which is diffracted by (110) plane with lattice constant of 0.28nm. Find the diffraction angle for 2^nd order diffraction.

A. 10 degrees

B. 21 degrees

C. 30 degrees

D. 50 degrees

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3.
Which crystal system does not have all axial angles at 90 degrees?

A. Tetragonal

B. rhombohedral

C. orthorhombic

D. cubic

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4.
Two samples A and B of a brittle material have crack lengths in the ratio 3 : 1. The ratio of the tensile strengths (measured normal to the cracks) of A and B will be in the ratio

A. 1 : 3

B. √3 : 1

C. 1 : √3

D. 1 : 9

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5.
Which gas cannot be used to test reactive sample in TGA?

A. N₂

B. O₂

C. He

D. Ar

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6.
Transport mechanisms that do not contribute to densification during sintering are:
P. Surface diffusion
Q. Bulk diffusion
R. Bulk diffusion
S. Evaporation-condensation
T. Viscous flow

A. P, Q

B. Q, S

C. Q, T

D. P, S

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7.
In the powde metallurgy processing, the objective of pressing before sintering is to

A. squeeze out the moisture around the powder particles

B. further refine the grain size

C. break up the oxides around the particles

D. compacting the powder particles into mechanical and atomic closeness

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8.
A sub-lance is used to monitor composition and temperature in

A. BOF

B. Ladle refining furnace

C. Continuous casting mould

D. Blast furnace

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9.
X-rays cannot penetrate

A. Lead

B. Wood

C. steel

D. plastic

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10.
The waves used by artificial satellites for communication is

A. microwaves

B. infrared waves

C. radio waves

D. X-rays

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Introduction to Metallurgy MCQ Questions and Answers | Metallurgical Engineering

1. Which of the following are not commercially manufactured by powder metallurgy

Answer & Solution

2. Tata salt was tested (FCC) with X-ray (0.071nm) which is diffracted by (110) plane with lattice constant of 0.28nm. Find the diffraction angle for 2nd order diffraction.

Answer & Solution

3. Which crystal system does not have all axial angles at 90 degrees?

Answer & Solution

4. Two samples A and B of a brittle material have crack lengths in the ratio 3 : 1. The ratio of the tensile strengths (measured normal to the cracks) of A and B will be in the ratio

Answer & Solution

5. Which gas cannot be used to test reactive sample in TGA?

Answer & Solution

6. Transport mechanisms that do not contribute to densification during sintering are: P. Surface diffusion Q. Bulk diffusion R. Bulk diffusion S. Evaporation-condensation T. Viscous flow

Answer & Solution

7. In the powde metallurgy processing, the objective of pressing before sintering is to

Answer & Solution

8. A sub-lance is used to monitor composition and temperature in

Answer & Solution

9. X-rays cannot penetrate

Answer & Solution

10. The waves used by artificial satellites for communication is

Answer & Solution

1.
Which of the following are not commercially manufactured by powder metallurgy

2.
Tata salt was tested (FCC) with X-ray (0.071nm) which is diffracted by (110) plane with lattice constant of 0.28nm. Find the diffraction angle for 2^nd order diffraction.

3.
Which crystal system does not have all axial angles at 90 degrees?

4.
Two samples A and B of a brittle material have crack lengths in the ratio 3 : 1. The ratio of the tensile strengths (measured normal to the cracks) of A and B will be in the ratio

5.
Which gas cannot be used to test reactive sample in TGA?

6.
Transport mechanisms that do not contribute to densification during sintering are:
P. Surface diffusion
Q. Bulk diffusion
R. Bulk diffusion
S. Evaporation-condensation
T. Viscous flow

7.
In the powde metallurgy processing, the objective of pressing before sintering is to

8.
A sub-lance is used to monitor composition and temperature in

9.
X-rays cannot penetrate

10.
The waves used by artificial satellites for communication is