Pick out the wrong statement.
A. Cold cracking of a weld is due to the presence of hydrogen gas in the weld
B. True stress is given by, σ = σE (1 + εE), where σE and εE are engineering stress and engineering strain respectively
C. Phosphorous can be easily recovered in the iron blast furnace
D. High residual stress at the surface is beneficial for fatigue properties of a material
Answer: Option C
This Question Belongs to Chemical Engineering >> Chemical Engineering Basics
Which of the following will resist maxi-mum shock & vibration without cracking?
A. Grey cast iron
B. White cast iron
C. Malleable iron
D. Graphite
A. Pulverised fuel
B. Travelling grate stoker firing
C. Circulating fluidised bed
D. Fluidised bed
Isotropic materials have the same __________ in all directions.
A. Induced stresses
B. Density
C. Elastic properties
D. Thermal properties
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