MDE 4 Q4

1 / 3

Question: What is the primary purpose of the diffuser in a main engine turbocharger?

D) To filter the intake air before it enters the compressor wheel

A) To increase the temperature of the compressed air before it enters the cylinders

B) To slow down the high-velocity air exiting the compressor and convert its kinetic energy into pressure

C) To reduce the backpressure in the exhaust system and improve turbocharger efficiency

2 / 3

Question: What is the primary purpose of the nozzle ring in a main engine turbocharger?

B) To direct and accelerate exhaust gases onto the turbine wheel for improved energy extraction

A) To regulate the flow of lubricating oil to the turbocharger bearings

D) To increase the pressure of intake air before it reaches the compressor wheel

C) To cool the exhaust gases before they enter the turbine

3 / 3

Question: What is the primary purpose of the volute casing in a main engine turbocharger?

C) To reduce the temperature of the exhaust gases before they enter the turbine

A) To house the turbocharger bearings and ensure proper lubrication

D) To maintain the alignment of the turbocharger shaft with the engine block

B) To collect and direct compressed air from the compressor wheel into the engine's intake manifold

Your score is