Which of the following are not commercially manufactured by powder metallurgy
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Metallurgical Engineering · all questionsIntroduction to Metallurgy
Introduction to Metallurgy
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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.
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Which crystal system does not have all axial angles at 90 degrees?
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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
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Which gas cannot be used to test reactive sample in TGA?
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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
P. Surface diffusion
Q. Bulk diffusion
R. Bulk diffusion
S. Evaporation-condensation
T. Viscous flow
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In the powde metallurgy processing, the objective of pressing before sintering is to
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A sub-lance is used to monitor composition and temperature in
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X-rays cannot penetrate
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The waves used by artificial satellites for communication is
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The structure of solids is investigated by using
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Which one of the following can give information about the corrosion rate?
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\left[ {\begin{array}{*{20}{c}}
{21}&0&0 \\
0&9&0 \\
0&0&6
\end{array}} \right]MPa
The maximum shear stress available for the above stress tensor is . . . . . . . . MPa.
The maximum shear stress available for the above stress tensor is . . . . . . . . MPa.
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The pilling-Bedworth ratio is defined as
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Fick's second law of diffusion is stated as:
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The reflections allowed in DC crystal
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Which part of a microscope do you look through to see an object magnified?
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Identify the combination of mechanisms which best describes sintering of pure metals in powder metallurgy.
P. Grain boundary melting
Q. Liquid metal freezing
R. Interparticle melting
S. Recrystallisation
T. Grain growth
U. Oxidation
V. Reduction
P. Grain boundary melting
Q. Liquid metal freezing
R. Interparticle melting
S. Recrystallisation
T. Grain growth
U. Oxidation
V. Reduction
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Which one of the following expands upon solidification?
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The Larson-Miller parameter 'P' connecting the temperature 'T' and the rupture time 'tr' is given as
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