A main engine speed control governor for one...

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Question 1 of 2066636eef28f7522a1c51fe73

A main engine speed control governor for one of your uninspected fishing industry vessel's main propulsion engines hunts, surges, or is sluggish to respond to load changes. Which of the following governor oil conditions would be the greatest single source of governor troubles?

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Question 1 of 20

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🔍 Key Concepts

• How engine governors maintain constant speed under changing load • Why oil condition inside a hydraulic governor affects movement of internal parts and control stability • The difference between problems caused by air, dirt, viscosity, and wrong oil type in a hydraulic control system

💭 Think About

• Which condition would most directly cause rapid, unstable speed changes like hunting or surging, by changing the effective pressure or volume inside the governor? • Which condition would most affect how quickly and smoothly small internal parts (spool valves, pistons) can move in response to tiny speed changes? • Think about which oil problem would show its effect IMMEDIATELY in control response, even if all clearances and springs are correct.

✅ Before You Answer

• Compare how air entrainment vs. solid dirt would change the governor oil’s effective compressibility and damping. • Consider how using the wrong viscosity might cause slow response, but ask yourself if it is usually the greatest single source of trouble compared to another listed condition. • For each option, picture the internal governor parts: which condition would most interfere with precise hydraulic control and cause hunting, surging, or sluggish response?

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