Direct reversible main propulsion diesel...

Question 1 / 270705eccefa3bacbc34ba4d47cbf

Question 1 of 270705eccefa3bacbc34ba4d47cbf

Direct reversible main propulsion diesel engines would normally be fitted with a/an __________.

Question 1 of 27070

Direct reversible main propulsion diesel engines would normally be fitted with a/an __________.

🔍 Key Concepts

• Direct reversible diesel engines and how their direction/speed is controlled • The basic job of a governor on a diesel engine • Difference between constant speed vs variable speed control

💭 Think About

• Think about whether a directly reversible main engine normally runs at one fixed speed or needs to operate over a range of speeds ahead and astern. • Consider how the bridge controls the ship’s speed when maneuvering in port with a direct-reversing engine. • Ask yourself which type of governor allows the operator to change engine speed with the telegraph/engine control, rather than holding it at one fixed RPM.

✅ Before You Answer

• Be clear on what main propulsion requires during maneuvering: fixed RPM or adjustable RPM? • Recall that a constant speed governor is typically used where frequency or speed must stay nearly constant (like generators). • Eliminate any governor type whose primary purpose is not general speed control of a propulsion engine.

Question 1 of 27070

Direct reversible main propulsion diesel engines would normally be fitted with a/an __________.

constant speed governor

isochronous hunting governor

variable speed governor

nutating disk governor

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