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

USCG General Subjects (Auxiliaries & Systems) (Set 2)

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Question 1 of 30

Which of the following statements describes the characteristics of precision manufactured roller bearings?

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30 MCQs

#1 Which of the following statements describes the characteristics of precision manufactured roller bearings? #2 Which of the listed types of bearings is an example of a half bearing? #3 Why do roller bearings have higher loading capacities than ball bearings? #4 In a compression type automatic grease cup, the lubricant is forced into the bearing by __________. #5 To ensure adequate lubrication and to prevent a high operating temperature, the recommended amount of grease injected into a ball or roller bearing is approximately __________. #6 Machinery with ball bearings designed to be filled with grease should have the relief plug temporarily removed while grease is being added. This plug should remain out until the machinery has been operated and sufficiently warmed up to ensure that __________. #7 When replacing ball bearings on an electric motor shaft, you should __________. #8 Which of the listed tools should be used to remove a tapered roller bearing from a shaft? #9 Which of the following statements is correct concerning antifriction bearings installed on pumps? #10 Packing extremely soft grease into a roller bearing will cause __________. #11 A ball bearing will overheat if __________. #12 What material is most commonly used as a sacrificial anode for the purposes of minimizing the galvanic corrosion of steel and cast iron? #13 When an aluminum plate is bolted to a steel plate, what is required at the bolted joint to minimize bimetallic corrosion? #14 Before primers and finish coats may be applied to a metal surface, the surface must be properly prepared. What statement is true concerning surface preparation? #15 In preparing the surface of a metal for application of primers and finish coats, which of the listed hand tools is appropriate for surfaces with significant pitting? #16 What is meant by the term "boxing" paint? #17 When applying paint with a brush, which of the following pairs of techniques are recommended? #18 When installing DANGER tags when performing a tag-out and lock-out procedure in preparation for accomplishing maintenance, what is the color of these tags? #19 Under what circumstances could equipment be operated when tagged with DANGER tags? #20 What statement is true concerning the polishing coalescer filter of an oily-water separator? #21 Which of the listed characteristics of fuel oil establishes the danger point as far as transferring, pumping, and firing procedures are concerned? #22 Which characteristic of fuel oil is the most significant when determining the temperature to which the fuel oil must be heated for proper atomization? #23 The BTU value of fuel oil is determined by a/an __________. #24 In what application is a remote valve operator most likely to be located outside the machinery space when the valve itself is located within the machinery space? #25 On a ship with a continuously manned engine room, ratings may form part of the engineering watch. For engine room watch ratings, what is the customary time to relieve the watch? #26 In terms of the personal safety of an engine room watch standing rating, which alarm response would be the most immediately critical? #27 Setting up a welding job, where the work is the positive pole and the electrode is the negative pole for the arc, is known as a/an __________. #28 Solder is an alloy of __________. #29 Tinning a soldering iron will __________. #30 Flux is used when soldering, in order to __________.

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