Cert III Heavy Commercial Vehicle Practice Questions - Certificate III In Heavy Commercial Vehicle Mechanical Technology (AUR31120) Exam

A Variable Geometry Turbocharger (VGT) improves engine performance by:

Changing the angle of vanes in the turbine housing to control boost at varying engine speeds Using two separate turbochargers that engage at different RPM ranges Bypassing exhaust gas around the turbine at high RPM via a wastegate Adjusting the compressor wheel diameter mechanically during operation

Correct Answer:

Changing the angle of vanes in the turbine housing to control boost at varying engine speeds

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