Pass Benchmark: 70% • Standard: USCG NMC / 46 CFR
USCG Engine General (Supplementary) (Set 8)
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Question 1 of 30
When the compressed air reservoir is placed in line with an air compressor and is used as an after cooler, the reservoir must be __________.
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30 MCQs #1 When the compressed air reservoir is placed in line with an air compressor and is used as an after cooler, the reservoir must be __________. #2 The device shown in the illustration is commonly used to __________? GS-0120 #3 One of the functions of the component labeled "E", shown in the illustration, is to __________. GS-0119 #4 As demand on the device shown in the illustration fluctuates in the pressure range of 100 to 110 psi, the output of the unit is controlled by __________. GS-0119 #5 Which of the following statements correctly describes the construction of the close coupled sanitary pump shown in the illustration? GS-0070 #6 The device shown in the illustration is a __________. GS-0155 #7 The diaphragm orifice labeled "H", as shown in the illustration is used as a/an __________. GS-0155 #8 According to the illustration, which of the following statements represents the order of events required to occur for the device to close? GS-0155 #9 The drains of lavatory sinks are fitted with P-type or S-type traps to __________. #10 A viscous film of oil collected between the valve face and seat of a low pressure reciprocating air compressor will __________. #11 Operating a reciprocating air compressor without an air filter will cause __________. #12 Carbon deposits forming on the discharge valves of an air compressor are caused by oil deterioration under high pressure. The first step in reducing these deposits would be to __________. #13 Excessively low air pressure occurring in the intercooler of a reciprocating air compressor is caused by __________. #14 Leaking valves in an air compressor can be a result of __________. #15 As routine maintenance, the bilge manifold valves are periodically removed and examined. Prior to resecuring the valve bonnets, the valve __________. #16 In order to take suction on the lube oil drain tank cofferdam with the bilge pump shown in the illustration, how many suction side valves must be open? GS-0042 #17 Under what conditions is it permissible to pump machinery space bilges directly overboard without processing by an oily water separator? #18 Salt water ballast is to be discharged into the #6 port and starboard wing tanks. Which combination of valves, illustrated, must be opened, and which valves should be closed? GS-0139 #19 With regard to a ballast system associated with a dry cargo ship, what is the primary purpose of the forepeak and aft peak tanks? #20 With regard to a ballast system associated with a dry cargo ship, what is the primary purpose of the double-bottom ballast tanks? #21 The device shown in the illustration is used to __________. GS-0029 #22 Which of the listed valve types is typically used for suction and discharge valves on modern low pressure air compressors? #23 In order to distribute the side pressures over a wide area of the cylinder walls and liners, which of the listed types of pistons are used in modern low pressure air compressors? #24 Which of the following compressors would be used for a cold-ship start-up of a ship's service diesel generator on a motor ship? #25 A viscous film of oil collected between the valve face and seat of a low pressure reciprocating air compressor will __________. #26 In a low pressure air compressor, the loss of volumetric efficiency normally results from __________. #27 Which of the listed central operating system types requires conversion of continuous analog signals from the sensing and transmitting devices to discrete bits of information that can be understood by the system computer for the purposes of processing and control. #28 As shown in figure "B" in the illustrated block diagram of a central operating system configured for supervisory control, what is the function of the block "ANALOG (A-D MUX)"? EL-0094 #29 As shown in figure "B" of the illustrated block diagram for a central operating system configured for supervisory control, what is becoming the industry standard for transmission of analog signals for a measured variable? EL-0094 #30 As shown in figure "A" of the illustrated block diagram of a central operating system configured for direct digital control, what does the output system block "ANALOG D/A" represent? EL-0095
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