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.

At low engine loads, exhaust gas energy is insufficient for turbochargers to supply adequate scavenging air. Modern low-speed two-stroke diesel engines utilize electrically driven auxiliary blowers to maintain required charge air pressure and prevent smoke or stall conditions.