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

USCG Safety & Environmental Protection (Deck) (Set 31)

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Question 1 of 30

What is the proper direction of flow through a globe valve when the valve is installed to be in a normally open position?

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30 MCQs

#1 What is the proper direction of flow through a globe valve when the valve is installed to be in a normally open position? #2 On what type of pump would you find an impeller? #3 What is the purpose of a check valve? #4 What is the purpose of a vent header? #5 Overspeed of the diesel engine driving an electric generator could cause __________. #6 What causes cavitation in a centrifugal pump? #7 What is the operating principal of a flash type evaporator? #8 What prevents water running along the shaft of a leaking centrifugal pump from entering the shaft bearing? #9 Why does a centrifugal bilge pump require priming? #10 In an emergency, the electro-hydraulic steering units can be directly controlled by the __________. #11 According to the Code of Federal Regulations, which of the following statements is correct regarding the steering gear on a vessel contracted for after June 9, 1995? #12 Mechanical gearing of deck machinery such as the windlass or towing engine should __________. #13 Mechanical gearing of deck machinery such as the windlass or boat hoists should __________. #14 The follow-up gear on an electro-hydraulic steering gear __________. #15 In an electro-hydraulic steering system, rudder movement is maintained in close synchronization with the steering wheel position by means of the __________. #16 Rotation of the steering wheel on the navigation bridge initiates oil pressure being applied to the steering gear rams by __________. #17 Dual electro-hydraulic steering units usually operate __________. #18 When the helm is turned on the navigation bridge, which of the listed actions will be the FIRST response in the steering room on a ship equipped with an electro-hydraulic steering gear? #19 Under normal operating conditions, the rudder is hydraulically locked unless __________. #20 A hydraulic accumulator is designed to __________. #21 What is NOT used as a stern tube bearing, on a large vessel? #22 What type of stern tube bearing has the least friction? #23 What is the principle behind dynamic braking as used on an anchor windlass? #24 What is the most probable cause of reduced capacity in a reciprocating air compressor? #25 When two generators are operating in parallel, what will happen if one engine driving a generator shuts down? #26 What is the function of an air receiver in the compressed air system? #27 Where a propeller shaft passes through the hull, water is prevented from entering by means of a __________. #28 What does a pyrometer measure on a diesel engine? #29 What power source actuates a solenoid valve? #30 What is the purpose of a striker plate?

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