Two Technicians Are Discussing VGT's (Variable-Geometry Turbochargers') Variable-Nozzle Opening

question 9

Multiple Choice

Two technicians are discussing VGT's (variable-geometry turbochargers') variable-nozzle opening. Technician A says when less exhaust gas flow takes place across the turbine, the turbine speed drops because exhaust backpressure increases. Technician B says that by varying the width of the nozzle opening with an actuator, the turbine speed power is adjusted to provide just enough energy to drive the compressor wheel at the desired boost level for any engine speed and load condition. Who is right?

• A)A only"
• B)B only"
• C)Both A and B
• D)Neither A nor B"

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Definitions:

New Learning

The process of acquiring new knowledge or skills.

Forgetting Curve

A graph that describes the rate at which information is lost over time when there is no attempt to retain it.

Forgetting Rate

The speed at which information is lost from memory over time, an aspect of memory decay.

Intrusion Errors

Memory mistakes in which elements that were not part of the original information get mixed into (“intrude” into) someone’s recall.