Technician a Says That Viscosity Index (VI) Improvers Thicken Oil

question 29

Multiple Choice

Technician A says that viscosity index (VI) improvers thicken oil when it becomes hot and thins it when it becomes cold. Technician B says that VI improvers thin oil when it's hot and thicken it when it's cold. Who is correct?

• A)Technician A
• B)Technician B
• C)Both A and B
• D)Neither A nor B

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Definitions:

Functional Fixedness

A cognitive bias that limits a person to using an object only in the way it is traditionally used, hindering problem-solving and creativity.

Algorithm

A specific set of rules or processes to be followed in calculations or problem-solving operations, especially by a computer.

Heuristic

A problem-solving approach using practical methods or various shortcuts to produce solutions that may not be optimal but are sufficient for immediate goals.

Subgoal Activation

The process by which smaller objectives are targeted in order to achieve larger, overarching goals.