Question 479Motor Plants - Assistant Engineer

The correct answer is D) gas driven turbocharger because it has a wide speed range, high operating temperatures and close tolerances. Excessive vibrations in a main propulsion diesel engine are more likely to cause damage to the gas driven turbocharger compared to the other components listed. This is because the turbocharger operates at high speeds, high temperatures, and has very tight clearances between rotating and stationary parts. The pulsating gas load and vibrations can disrupt the delicate balance and operation of the turbocharger, potentially leading to damage or failure. The other options (scavenged air pump, reciprocating scavenge pump, and centrifugal cooling water pump) are less susceptible to vibration-related damage as they are designed for more steady-state operation and do not have the same high-speed, high-temperature, and tight-tolerance characteristics as the turbocharger.