According to the illustrated diesel engine...

Question 1 / 2066636ef128f7522a1c523509

Question 1 of 2066636ef128f7522a1c523509

According to the illustrated diesel engine fuel treatment and fuel service systems schematic, what is the purpose of the device labeled "viscosimeter"? Illustration MO-0077

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Question 1 of 20

66636ef128f7522a1c523509

According to the illustrated diesel engine fuel treatment and fuel service systems schematic, what is the purpose of the device labeled "viscosimeter"? Illustration MO-0077

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🔍 Key Concepts

• Trace the fuel flow from the final heaters, through the viscosimeter, to the injection pumps on the schematic. • Notice what component the signal line from the viscosimeter (V) goes to and what that component actually controls. • Think about how ships normally keep heavy fuel at the correct viscosity, and what is usually adjusted: temperature (steam to heaters), mixing ratio, or pump speed.

💭 Think About

• On the diagram, after the fuel passes through the final heaters and filters, what is the very last control/measurement device before the injection pumps, and what does its feedback logically need to change to correct viscosity? • If the fuel becomes too thick or too thin, which of the four options describes a control action that would directly and quickly change viscosity without disturbing the rest of the system? • Compare a simple indicating instrument versus a control element: which answer choices describe mere indication, and which describe a closed-loop control to hold viscosity constant?

✅ Before You Answer

• Verify on the drawing that the viscosimeter (V) has a control line going to only one specific component – identify what that component adjusts. • Confirm which variable most directly affects fuel viscosity at the engine in a heavy fuel system: temperature via heater steam, three‑way mixing valve position, or booster pump speed. • Eliminate any option that describes a function already clearly assigned to another labeled component (such as the three‑way mixing valve or the booster pump) elsewhere in the schematic.

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Question 1 of 20

According to the illustrated diesel engine fuel treatment and fuel service systems schematic, what is the purpose of the device labeled "viscosimeter"? Illustration MO-0077

It controls the position of the three-way mixing valve for the purpose of controlling the fuel oil viscosity supplied to the fuel injection pumps of the main engine.

It measures the viscosity of the fuel oil being delivered to the fuel injection pumps of the main engine. It is used for indication only and not control.

It controls the steam flow through the final heater for the purpose of controlling the fuel oil viscosity supplied to the fuel injection pumps of the main engine.

It controls the speed of the booster pump for the purpose of controlling the fuel oil viscosity supplied to the fuel injection pumps of the main engine.

Question 1 / 2066636ef128f7522a1c523509

Question 1 of 2066636ef128f7522a1c523509

According to the illustrated diesel engine fuel treatment and fuel service systems schematic, what is the purpose of the device labeled "viscosimeter"? Illustration MO-0077

Back

Question 1 of 20

66636ef128f7522a1c523509

According to the illustrated diesel engine fuel treatment and fuel service systems schematic, what is the purpose of the device labeled "viscosimeter"? Illustration MO-0077

No comments yet

Be the first to share your thoughts!

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

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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