QUESTION: 137

For carbon steel, common velocity limits are generally limited to _________ fps for rich amine and _______ fps for lean amine.

8-10, 30
6-9, 15
4-8, 10
3-6, 20

Answer(s): D

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QUESTION: 138

Heat treatment can have a significant effect on the toughness and hence fatigue resistance of a metal. In general, ________ grained microstructures tend to perform better than _________ grained.

Fine, Course
Austenetic, martensitic
Course, Fine
Martensitic, austenetic

Answer(s): A

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QUESTION: 139

Short term overheating is a permanent deformation occurring at relatively _________ stress levels as a result of localized overheating. This usually results in bulging and failure by stress rupture.

Low
High
Even
None of the above

Answer(s): A

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QUESTION: 140

Temperature, ________ and stress are critical factors of stress rupture. This is usually found in furnaces with coking tendencies and fired heater tubes.

Pressure
Ductility
Time
Tensile strength

Answer(s): C

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QUESTION: 137

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QUESTION: 139

QUESTION: 140

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