The fire pump drive engine on the salvage...

Question 1 / 2066636eef28f7522a1c51fad5

Question 1 of 2066636eef28f7522a1c51fad5

The fire pump drive engine on the salvage tug to which you are assigned is fitted with a turbocharger as shown in the illustration. What statement is true concerning this type of turbocharger? Illustration MP-CA-06

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🔍 Key Concepts

• Radial vs axial flow turbines – look at the direction the exhaust gas takes as it hits and leaves the turbine wheel. • Location of shaft bearings – compare where the bearings sit relative to the compressor and turbine wheels (between them or outside them). • Typical marine turbocharger construction – how small engine turbochargers are usually supported and how the gas path is arranged.

💭 Think About

• From the exhaust intake at the bottom to the exhaust outlet on the right, does the gas approach the turbine wheel mostly from the side (radially) or straight along the shaft (axially)? • Study the shaft and bearing housing: are the bearings positioned in the center housing between the two wheels, or are they outboard near the outer ends of the wheels? • Compare the compressor side and turbine side shapes: which side clearly shows radial entry and which way does the gas leave? What does that tell you about turbine type?

✅ Before You Answer

• Verify whether the bearings are both located in the central housing between the compressor and turbine wheels (inboard) or outside them (outboard). • Confirm the flow direction of the exhaust gas as it first hits the turbine blades – coming in from the side toward the center (radial) or in line with the shaft (axial). • Match the observed turbine flow type and bearing location carefully to the wording of each choice; eliminate any option that gets either flow type or bearing position wrong.

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Question 1 of 20

The turbocharger is fitted with a radial flow turbine and inboard shaft bearings.

The turbocharger is fitted with an axial flow turbine and outboard shaft bearings.

The turbocharger is fitted with an axial flow turbine and inboard shaft bearings.

The turbocharger is fitted with a radial flow turbine and outboard shaft bearings.

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Question 1 / 2066636eef28f7522a1c51fad5

Question 1 of 2066636eef28f7522a1c51fad5

Back

Question 1 of 20

66636eef28f7522a1c51fad5

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If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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