Chemical Engineering :: Chemical Engineering Basics
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In TIG welding, thoriated tungsten electrodes are used, because it
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Vernier calipers can not be used to measure the
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Which of the following is not the commercial name of polymethyl-methacrylate (PMMA) ?
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On being hit with a hammer, __________ will readily fracture.
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Which of the following does not discharge the dust collected as a dry solid ?
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Pick out the wrong statement.
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Use of flux during soldering is done to
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The most important consideration in value engineering is the
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Resilience of a bolt can be increased by increasing its
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A.
Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties.
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B.
Low carbon steel does not respond to the heat treatment for hardening of the material, hence it is subjected to case hardening or surface hardening processes like cyniding, carburising, nitriding etc., which produces high carbon outer layers resulting in increase of surface hardness.
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C.
Induction hardening and flame hardening techniques are also used for surface hardening.
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D.
Martempering of a material is a hardening process.
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