Most medium and slow speed diesels are...

Question 1 of 2707066636eec28f7522a1c51c6f7

Most medium and slow speed diesels are started by what medium?

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Question 1 of 27070

Q

Most medium and slow speed diesels are started by what medium?

🔍 Key Concepts

• Starting methods used on medium and slow-speed marine diesel engines • Difference between how small high-speed diesels and large main propulsion diesels are started • Why large diesel engines need a powerful starting medium to turn them over under compression

💭 Think About

• Think about the size and power of a typical main propulsion diesel on a commercial vessel: what kind of system is strong enough to crank it? • Which option is most commonly associated with large, reversible, low‑rpm main engines on ships rather than with small auxiliary engines? • Consider safety and reliability at sea: which system is traditionally favored on large diesels for dependable starts even if electrical power is limited?

✅ Before You Answer

• Focus on what is typical for medium and slow‑speed marine diesels used for main propulsion, not small auxiliary or truck engines • Eliminate options that are more common for small, high‑speed engines or for emergency starting only • Ask: which of these four is widely used as the primary starting system on large, slow‑turning marine diesels?