51. If the volume of a material does not change during deformation, then the Poisson's ratio should be
52. The SI unit of volumetric mass transfer coefficient is
53. Which of the following materials are common for whiskers?
54. Which of the following Mohr's circles of a plane-stress condition corresponds to equibiaxial tension
55. In an isothermal curve, which of the following is true when the temperature is increased?
56. Select the best material, which can be used for the applications mentioned below using the following data:
Material
k(W.) m-1.K-1
ρ (kg.m-3)
Cp (J.kg-1.K-1)
I
105
2320
687
II
425
10,500
234
III
238
2700
917
IV
2320
3500
519
V
63
2250
711
Choose a material which can be used as a heat reservior (to hold that)
| Material | k(W.) m-1.K-1 | ρ (kg.m-3) | Cp (J.kg-1.K-1) |
| I | 105 | 2320 | 687 |
| II | 425 | 10,500 | 234 |
| III | 238 | 2700 | 917 |
| IV | 2320 | 3500 | 519 |
| V | 63 | 2250 | 711 |
Choose a material which can be used as a heat reservior (to hold that)
57. The law governing the distribution of radiant energy over wavelength for a black body at a fixed temperature
58. If the choice of axes changes for an externally loaded solid material, the correct statements are:
P. The components of stress tensor changes.
Q. The octahedral shear stress does not change.
R. The distortion energy changes.
S. The yield loci in the space of prinicpal stresses do not change.
P. The components of stress tensor changes.
Q. The octahedral shear stress does not change.
R. The distortion energy changes.
S. The yield loci in the space of prinicpal stresses do not change.
59. The two partials repel each other and want to be as far as possible
60. The Rankine is converted into Fahrenheit
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