Chemical Engineering - Chemical Engineering Basics
Exercise :: Chemical Engineering Basics - Section 8
36. |
Dielectric |
A. |
is an electrical insulating material. | B. |
of low resistivity is preferred. | C. |
should have high thermal conductivity. | D. |
need not defy the corrosive action of chemicals. |
Answer: Option A
Explanation:
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37. |
Normalising of an object does not |
A. |
refine coarse grain structure obtained during hot working. | B. |
improve ductility. | C. |
improve yield strength. | D. |
improve machanical properties. |
Answer: Option B
Explanation:
|
38. |
Plasma is |
A. |
a high temperature neutral gas. | B. |
nothing but ionised gas. | C. |
a source of steady and highest controllable pressure. | D. |
formed at very low temperature. |
Answer: Option B
Explanation:
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39. |
The machanism involved in the removal of metal in drilling operation is by |
A. |
compression | B. |
extrusion | C. |
shearing | D. |
both 'b' & 'c' |
Answer: Option D
Explanation:
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40. |
Thermal conductivity of a material does not depend upon its |
A. |
mass | B. |
volume | C. |
surface area | D. |
all 'a', 'b' & 'c' |
Answer: Option D
Explanation:
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