What statement is true concerning the charge air system of a modern turbocharged slow- speed two-stroke cycle diesel engine?

Correct Answer: Option B — An electrically driven auxiliary blower is usually provided because the turbocharger cannot provide enough air at low engine speeds and loads.

Low-speed two-stroke marine diesels rely on electrically driven auxiliary blowers at low loads and idling speeds because exhaust gas energy is insufficient to drive the turbocharger and maintain adequate cylinder scavenging pressure.