Question 15 UFIV01 - Chief Engineer - UFIV

The Correct Answer is C **Why Option C ("Hydraulic power operated system.") is correct:** The starting system shown in the illustration MO-0049 typically depicts components characteristic of a hydraulic starting system. These systems utilize a high-pressure hydraulic pump (driven by an electric motor or manually), an accumulator to store pressurized fluid, control valves, and a hydraulic motor (starter) that engages the engine flywheel. Hydraulic systems are often favored for medium-sized auxiliary engines, especially in marine environments, because they offer high torque output, reliability, and are intrinsically spark-free, making them safe for potentially hazardous areas. **Why the other options are incorrect:** * **A) Gas engine power operated system:** This option describes systems where a separate, small internal combustion engine (often running on gasoline or LPG) is used to crank the main engine. While historically used, this is a distinct method not represented by the typical components (pump, accumulator, hydraulic motor) usually implied by such illustrations. * **B) Pneumatic power operated system:** This system (often called Air Start) uses high-pressure compressed air stored in reservoirs. While common on large main engines and some auxiliary engines, the illustration's components (especially the pump and accumulator if clearly visible) would be inconsistent with a pure air-only system, which primarily features air reservoirs, reducing valves, and an air distributor/motor. * **D) Electric power operated system:** Electric starting uses heavy-duty batteries and a large DC starter motor. While the depicted system might include an electric motor to drive the hydraulic pump, the overall system architecture—relying on high-pressure fluid storage (accumulator)—defines it as hydraulic, not purely electric starting, where the starter motor connects directly to the battery bank.