Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR

USCG Motor Plants & Auxiliary Boilers (Set 20)

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Question 1 of 30

What device is installed and used as a safety feature to satisfy Coast Guard regulations for the unit shown in the illustration? Illustration MO-0116

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30 MCQs

#1 What device is installed and used as a safety feature to satisfy Coast Guard regulations for the unit shown in the illustration? Illustration MO-0116 #2 In accordance with 46 CFR Part 46, diesel fuel oil system valves for removing water or impurities are __________. #3 The governor utilized with the device shown in the illustration has become inoperative while the vessel is underway at sea. Which of the following statements describes what action should be taken? Illustration MO-0119 #4 What is the primary purpose of the pneumatic component shown in the illustration? Illustration MO-0119 #5 A diesel generator governor is hunting. After changing the oil, the governor is flushed and the compensation needle valve is adjusted, but the hunting persists. You should NOW __________. #6 The most common contaminate of governor hydraulic fluid is __________. #7 If the compensating needle valve of a hydraulic governor is opened more than necessary the governor will __________. #8 A large change in ambient temperature, or using an oil of a viscosity different than the one recommended by the manufacturer in a mechanical hydraulic governor, will result in the need to adjust the __________. #9 Adjustments to the compensating needle valve in a hydraulic governor should be made with the engine at __________. #10 If the speeder spring of a main propulsion diesel engine governor breaks while operating at full load, the engine RPM will __________. #11 The hunting of a diesel engine may be caused by __________. #12 Governor hunting is caused by __________. #13 If the operating speed of a diesel engine increases without an apparent change in the engine control settings, you may suspect a __________. #14 Increasing the oil pressure acting on the power piston of the hydraulic governor shown in the illustration will __________. Illustration MO-0092 #15 The purpose of the compensating adjustment used in a diesel engine hydraulic governor is to __________. #16 Which of the following statements is correct concerning the operating function of the governor shown in the illustration? Illustration MO-0096 #17 According to the illustrated main engine cooling water systems drawing, which of the labeled heat exchangers represents the charge air coolers? Illustration MO-0111 #18 When a slow-speed diesel engine is used to directly drive a fixed-pitch propeller, how is a stop order met? #19 With a direct drive main propulsion arrangement, what statement is true? #20 As it applies to the combustion process associated with diesel engines, what is meant by the term "scavenging"? #21 If a slow-speed two-stroke cycle diesel engine is fitted with exhaust valves located in the cylinder heads, what scavenging flow-pattern is utilized? #22 If a slow-speed two-stroke cycle diesel engine is fitted with scavenging air ports and exhaust ports located on opposite sides of the cylinder wall, what scavenging flow-pattern is utilized? #23 What is the function of the intake system for a diesel engine? #24 According to the illustrated diesel engine cooling water systems diagram, what fluid is the low temperature central fresh water thermostat designed to maintain? Illustration MO-0129 #25 According to the illustrated diesel engine cooling water systems diagram, what is the functional description of the low temperature central fresh water thermostat? Illustration MO-0129 #26 According to the illustrated main engine cooling water systems diagram, which of the following heat exchangers would be isolated and bypassed while maneuvering in or out of port? Illustration MO-0111 #27 According to the illustrated main engine cooling water systems diagram, which of the following labeled heat exchangers represents the main lube oil cooler? Illustration MO-0111 #28 According to the illustrated main engine cooling water systems drawing, which labeled heat exchangers use sea water as a cooling medium? Illustration MO-0111 #29 According to the illustrated main engine cooling water systems drawing, which labeled pump is the main engine sea water cooling water pump? Illustration MO-0111 #30 According to the illustrated main engine cooling water systems drawing, which labeled sea water-cooled heat exchanger would have the highest sea water inlet temperature? Illustration MO-0111

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