Technician A says that creating higher backpressure speeds up the turbocharger, which decreases boost pressure. Technician B says that vanes surrounding the turbine wheel can move from open to a closed position to regulate the flow of exhaust gases across the turbine. Who is right?
A)A only"
B)B only"
C)Both A and B
D)Neither A nor B"

Question

Quizplus · Accepted Answer

Technician B is correct because variable geometry turbochargers use movable vanes to regulate exhaust flow, optimizing turbine speed and boost pressure. Technician A is incorrect; higher backpressure typically reduces turbo efficiency and boost pressure.

Technician a Says That Creating Higher Backpressure Speeds Up the Turbocharger