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

USCG General Subjects (Auxiliaries & Systems) (Set 12)

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Question 1 of 30

The baffle plate used in the reservoir of a hydraulic system serves to __________.

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30 MCQs

#1 The baffle plate used in the reservoir of a hydraulic system serves to __________. #2 A reservoir, as used in hydraulic systems aboard ship, is used to store hydraulic oil. Another function is to __________. #3 In a shell-and-tube type hydraulic fluid cooler, the amount of heat transferred from the hydraulic fluid to the cooling water depends upon __________. #4 If a hydraulic system is in continuous operation, and is equipped with an air cooled heat exchanger, the fan should __________. #5 In which of the listed hydraulic systems will the installation of an oil cooler be necessary? #6 To charge a bladder type hydraulic accumulator __________. #7 When normal operating pressure is applied to the hydraulic oil in a high-pressure system, the oil __________. #8 Purging air from a hydraulic system is necessary when __________. #9 New piping and tubing to be installed in a hydraulic system can be safely degreased by using __________. #10 As it pertains to safety valves, what is the definition of blow down? #11 Concerning safety valves, what statement is true? #12 Which of the following listed valves would require "blow down" to insure proper operation and prevent damage due to repeated and rapid opening and closing? #13 What statement representing the primary purpose of a steam trap is true? #14 In order for a steam trap to be effective in accomplishing its intended purpose, what statement is true regarding its installation? #15 In order for heat transfer to take place between two substances, what essential condition must exist? #16 What mode of heat transfer is associated with the transport of thermal energy from one location to another by fluid in motion? #17 What mode of heat transfer is associated with the transport of thermal energy within a body or between two bodies in direct contact? #18 Overall heat transfer processes often involve two or more modes of heat transfer. Specifically, when heat is being transferred from one side of an air compressor cylinder wall to the opposite side, what mode of heat transfer is associated with that particular part of the overall process? #19 What statement is true concerning the heat transfer rates through a heat exchanger boundary wall by conduction? #20 What statement is true concerning heat transfer rates by the heat transfer mode of natural convection? #21 What statement represents the first law of thermodynamics? #22 What statement represents the second law of thermodynamics? #23 If Boyles' law describes the relationship between the pressure and volume of ideal gases, what statement is true? #24 If Charles' law describes the relationship between the temperature and volume of ideal gases, what statement is true? #25 What term is defined as the quantity of heat necessary to raise the temperature of a unit mass of a substance one degree? #26 What statement represents the ideal gas law? #27 What term is defined as the amount of heat required to convert a unit mass of a substance from a liquid to a vapor at constant temperature and pressure? #28 What term is defined as the rate of doing work? #29 What statement is true concerning thermal energy in transition? #30 What statement is true concerning the internal energy of a substance?

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