Question 59Motor Plants - QMED70% to pass
Starting systems for large, direct reversing, main propulsion diesel engines are usually _______________.
AI Explanation
The correct answer is C) direct air admissions.
Large, direct reversing, main propulsion diesel engines in maritime applications are typically started using direct air admissions. This method involves using compressed air that is directly admitted into the engine cylinders to rotate the crankshaft and start the engine. This is a common and reliable starting system for these types of large marine diesel engines.
The other options are incorrect because hydraulic starting motors (A) and electric starting motors (B) are not the primary starting systems used for large, direct reversing, main propulsion diesel engines. Vane-type air motors (D) are a different type of air-powered starting system that is less commonly used for these large diesel engines.
Related Questions
#57 The purpose of the engine-driven hydraulic pump in an auxiliary diesel engine hydraulic starting system is to _______________.#58 In a medium-speed marine propulsion engine equipped with direct admission air starting valves, the cylinders without air starting valves fire first because the _______________.#60 During the starting of a diesel engine, compression gases are prevented from backing into the air starting system, shown in the illustration, by the__________. Illustration MO-0046 #61 When an air started, four-stroke cycle diesel engine is being cranked over, the starting air is admitted to each cylinder during the beginning of its _______________.#62 When an additional load is applied to a diesel engine which is using an inadequately inflated air bladder clutch unit, you can expect _______________.