81. TIG welding is preferred for
82. The temperature of the workpiece in metal working depends on
83. Match following:
Group 1
Group 2
P. Ergun equation
1. Tube flow
Q. Hagen-poiseulle equation
2. overall energy balance
R. Bernoulli equation
3. packed bed
S. Fourier equation
4. Heat flow
| Group 1 | Group 2 |
| P. Ergun equation | 1. Tube flow |
| Q. Hagen-poiseulle equation | 2. overall energy balance |
| R. Bernoulli equation | 3. packed bed |
| S. Fourier equation | 4. Heat flow |
84. Thin walled pressure vessels are to be made either from Material A and B. If the applied stress is 1.2 times higher when material A is used and (KIC)A = 0.6(KIC)B (where, KIC denotes plain strain fracture toughness). The ratio of critical crack lengths in material A and B will be
85. How is cooling of the material done is normalizing process
86. Which one is true for an opaque body?
87. For an edge dislocation, the intersection of the extra half-plane of atoms with the slip plane defines the
88. A device used for measuring the rate of a flow of a fluid flowing through a pipe.
89. The dislocation climb is least affected by
90. A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudnal strain = 0.8, then the magnitude of thickness strain is
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