In order to operate the main engine with...

🔍 Key Concepts

• Cross-compound or tandem-compound marine steam turbines and how the high-pressure (HP) and low-pressure (LP) turbines share steam flow • What happens to steam after it exhausts from the high‑pressure turbine in normal operation • Proper way to route HP turbine exhaust when the low‑pressure turbine is not in service

💭 Think About

• Think about the usual steam path: from boiler to HP turbine, then where does the steam normally go next, and where must it go if the LP turbine is not being used? • For safe single‑turbine operation, would you want to block steam to the HP turbine, the LP turbine, or change the exhaust routing? Why? • Ask yourself which arrangement allows the HP turbine to do useful work and still condense the steam properly without over‑pressurizing any part of the system.

✅ Before You Answer

• Verify which choice actually allows only the high‑pressure turbine to operate and still send exhaust steam to a condenser or further use point • Check which options would incorrectly block or mis‑route steam, making operation with only the HP turbine impossible or unsafe • Confirm that the correct setup must still maintain a proper condenser connection for the steam leaving the operating turbine

In order to operate the main engine with only the high pressure turbine in service, the unit should be arranged __________.

to secure only the gland sealing steam to the low pressure turbine

with a blank installed in the high pressure turbine steam inlet

so that the astern turbine is providing approximately one half the output horsepower

with the high pressure turbine exhausting directly to the main condenser

🔍 Key Concepts

💭 Think About

✅ Before You Answer