Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG General Subjects (Auxiliaries & Systems) (Set 32)
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Question 1 of 30
The letters 'NC' in '1/4-20 NC' indicates the bolt is __________.
Browse Questions in Set 32
30 MCQs #1 The letters 'NC' in '1/4-20 NC' indicates the bolt is __________. #2 Which of the figures in illustration GS-0080 would be used in conjunction with figure "C" in illustration GS-0015? Illustrations GS-0015 and GS-0080 #3 What class of screw thread is indicated with a machine screw described as 1/2-13 NC-2? #4 Which of the following types of nuts would be best suited to use when it is important that a nut not work itself loose due to vibration? #5 Which figure shown in the illustration, is the nut lock improperly used? Illustration GS-0156 #6 Which of the listed temperature sensors is made of heat-treated metallic oxides and generally has a negative coefficient of resistance? #7 A radiation pyrometer is sensitive to what form of radiation? #8 In what electrical temperature transmitting system is the system voltage generated by the magnitude of temperature difference between hot and cold junctions? #9 Suppose that a standard remote reading bourdon tube thermometer has a scale of 40 to 240oF. If the accuracy of the thermometer is plus or minus 1% of the span, what would the range of measured temperature be if the thermometer indicates 180oF? #10 If it is desired to determine the temperature difference between two locations using thermocouples, what wiring technique can be used to accomplish this? #11 What is the operating principle upon which a salinometer is based? #12 Which of the following speed tachometers produces an analog signal proportional to the shaft speed? #13 What statement is true concerning the arrangement and operation of the viscosity sensor as used for sensing the viscosity of heavy fuel oil? #14 Suppose that a standard bourdon tube pressure gauge has a scale of 0 to 1000 psig. If the accuracy of the gauge is plus or minus .5% of the span, what would the range of measured pressure be if the gauge indicates 690 psig? #15 Vibration characteristics to establish a baseline signature or to check the mechanical condition of machinery are measured under which of the following operative conditions? #16 A reading taken with a portable hand-held vibration meter is capable of indicating which of the following conditions? #17 Which of the following statements is NOT a function of an effective vibration analysis program? #18 Under which of the listed conditions can the engine room retake the throttle control from the bridge of an automated vessel? #19 When entering an unattended machinery space to conduct maintenance or a machinery space round, what must be done? #20 In accordance with international MARPOL Annex V regulations and federal regulations under 33 CFR Subchapter O, the discharge of plastics into the sea or the navigable waters of the United States is strictly prohibited. Which of the following statements is true concerning the legal disposal of plastics? #21 In accordance with the international MARPOL Annex VI regulations, which of the listed substances are prohibited from being burned in a shipboard incinerator? #22 In accordance with the international MARPOL Annex VI regulations, which of the listed substances are prohibited from being burned in a shipboard incinerator? #23 In accordance with the international MARPOL Annex VI regulations, what is the minimum allowable flue gas outlet temperature for a continuous-fed shipboard incinerator while in operation? #24 In accordance with the international MARPOL Annex VI regulations, what is a permissible alternative to burning oil residue sludge in an appropriate incinerator? #25 The lathe tool shown as figure "N" in the illustration is commonly known as a/an __________. Illustration GS-0090 #26 The angle "A" shown on the illustrated lathe tool bit is properly called the __________. Illustration GS-0164 #27 Which lathe tool shown in the illustration would best be used on a work piece to perform a right hand facing operation? Illustration GS-0090 #28 Which of the following statements represents the difference between a four-jaw independent chuck and a three-jaw universal chuck? #29 In machine shop practice, a center gage is used for checking the angle of __________. #30 Before power to a lathe is turned on, it is a good shop practice to first hand feed the carriage to ensure __________.
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