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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 17
6.
A dummy activity is used in PERT network to describe the
precedence relationship.
resource idleness.
resource restriction.
necessary time delay.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
Which of the following is not a characteristic observed in material failure by fatigue fracture ?
Plastic deformation of material does not occur.
Initiation of crack from below the surface does not occur.
Initation of crack occurs on the surface of the machine part.
Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
A polymer is termed as an 'elastomer', if its percentage elongation is more than 100%. An elastomer is termed as 'rubber' if its percentage elongation is more than __________ percent.
150
200
300
400
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
Current employed in resistance welding ranges from __________ kVA/cm2 .
1.2 to 2.5
4.5 to 6.2
7.5 to 8.5
10.5 to 15.5
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
Brittleness induced due to the presence of sulphur in steel can be reduced by adding
manganese
magnesium
vanadium
copper
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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