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Introduction to Metallurgy MCQ Questions and Answers | Metallurgical Engineering

Enhance your knowledge of Introduction to Metallurgy with this comprehensive collection of MCQ questions and answers. These MCQ questions and answers in Introduction to Metallurgy are specifically designed for students of Metallurgical Engineering who are preparing for the GATE Exam. Strengthen your preparation and excel in your studies with this valuable resource. Page-7 section-1

61
Which of the following option is appropriate for TGA and DTA?
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Answer: Option B
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62
. . . . . . . . wavelength X-rays used in medicals applications.
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Answer: Option B
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63
Identify the correct statements from the following:
P. 0.2% yield strength of a material implies 0.2% of the yield strength.
Q. Von-Misses yield criterion implies that yielding occurs when the distortion energy reaches a critical value.
R. Radius of the cylinderical Von-Misses yield surface increases as the grain, size of a single phase material decreases.
S. Tresca's yield criterion gives a circular cylinderical surface in the space of the three principal stresses.
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Answer: Option B
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64
In a brittle material, the maximum internal crack is 8 μm. If Young's modulus is 400 GPa and surface energy is 3.14 J/m2, the estimated theoretical fracture strenght (in MPa) is
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Answer: Option D
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65
A diffracted beam may be defined as a beam composed of a large number of scattered rays mutually reinforcing one other
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Answer: Option A
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66
The magnified image of the specimen in SEM is formed in . . . . . . . .
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Answer: Option A
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67
The driving force for sintering of a powder compact is
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Answer: Option B
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68
The yield strenght of a polycrystalline metal increases from 100 MPa to 145 MPa on decreasing the grain size from 64 μm to 25 μm. The yield strenght of this metal (in MPa) having a grain size of 36 μm is
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Answer: Option B
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69
Which ratio is measured by mass detector ?
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Answer: Option D
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70
The sulphide capacity (Cs) of liquid slag of composition 55 wt% CaO, 20 wt% SiO2, 15 wt% Al2 O3 and 10 wt% MgO is given by the following equation
$$\log {C_s} = 3.44\left( {{X_{caO}} + 0.1\,{X_{MgO}} - 0.8\,{X_{A{l_2}{O_3}}} - {X_{si{o_2}}}} \right) - \left( {\frac{{9894}}{T}} \right) + 2.05$$
where, X is mole fraction of the respective components. Atomic weights of Ca, Mg, Si, Al and O are 40, 24, 28, 27, and 16 respectively. The value of Cs at 1900 K is
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Answer: Option B
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