The jacking gear must be engaged as quickly...

Question 1 / 205eccefa1bacbc34ba4d472d7

Question 1 of 205eccefa1bacbc34ba4d472d7

The jacking gear must be engaged as quickly as possible when securing the main turbines in order to __________.

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Question 1 of 20

5eccefa1bacbc34ba4d472d7

The jacking gear must be engaged as quickly as possible when securing the main turbines in order to __________.

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🔍 Key Concepts

• Purpose of a jacking (turning) gear on large steam turbines • What happens inside a turbine rotor as it cools while sitting still • Why slow rotation after shutdown is important for big, hot rotating machinery

💭 Think About

• Think about which part of the main turbine is most at risk if it stays stopped and very hot in one position. • Ask yourself: does the jacking gear mainly move oil, cool bearings, cool gears, or protect the shape/alignment of the rotor? • Consider what “uneven cooling” could physically do to a long, heavy turbine shaft that is only supported at the bearings.

✅ Before You Answer

• Identify which choice deals directly with the rotor/shaft condition during cool-down, not normal running. • Separate options that talk about lubrication or cooling of other parts (bearings/gears) from the one that focuses on thermal stresses in the rotor. • Confirm in your mind that jacking gear turns the shaft slowly after shutdown, and ask: which option best matches the reason for that slow turning?

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Question 1 of 20

The jacking gear must be engaged as quickly as possible when securing the main turbines in order to __________.

maintain a constant supply of lube oil to the main unit

prevent uneven cooling of the turbine rotors

prevent the stern tube bearing from overheating

permit rapid cooling of the reduction gears

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Question 1 / 205eccefa1bacbc34ba4d472d7

Question 1 of 205eccefa1bacbc34ba4d472d7

The jacking gear must be engaged as quickly as possible when securing the main turbines in order to __________.

Back

Question 1 of 20

5eccefa1bacbc34ba4d472d7

The jacking gear must be engaged as quickly as possible when securing the main turbines in order to __________.

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

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed