Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Deck General (Set 65)
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Question 1 of 30
What is the mechanical advantage of tackle number 6 as shown in illustration D029DG below?
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30 MCQs #1 What is the mechanical advantage of tackle number 6 as shown in illustration D029DG below? #2 What is the stress on the hauling part when lifting a 4,200 lbs. weight using a threefold purchase rove to advantage? (Allow 10 percent of the weight per sheave for friction.) #3 The sheave diameter to be used with a 3-inch manila rope is __________. #4 A breeches buoy is being rigged from the shore to a stranded vessel. The initial shot line passed to the vessel is normally made fast to a __________. #5 Unless extremely flexible wire rope is used, the sheave diameter should always be as large as possible, but should never be less than __________. #6 How much weight can you lift by applying 100 lbs. of force to a twofold purchase rigged to disadvantage (do not consider friction)? #7 Separating both blocks of a tackle to prepare it for reuse is called __________. #8 To facilitate passing the end of a large rope through a block, you could use a __________. #9 To reeve a right-angle threefold purchase start with the __________. #10 You are ordering a new block to use with a 3-inch circumference manila line. Which represents a proper size block for this line? #11 What size block shell should be used with a 4-inch manila line? #12 The cheek length of a block in inches should be about __________. #13 Which tackle arrangement has the LEAST mechanical advantage? #14 A snatch block is a __________. #15 A snatch block would most likely be used as a __________. #16 A sheave is a __________. #17 The grooved wheel inside a block is called a __________. #18 A metal ring on the bottom of a block, to which the standing part of a tackle is spliced, is known as a(n) __________. #19 The standing part of a tackle is __________. #20 A small light tackle with blocks of steel or wood that is used for miscellaneous small jobs is called a __________. #21 Safety shackles are fitted with __________. #22 A bench hook is used for __________. #23 A sail hook is used for __________. #24 "Herringbone" is a term associated with __________. #25 Using illustration D058DG below, which of the figures is the preferred method of forming a temporary eye splice using wire rope clips? #26 Using illustration D058DG below, which of the figures protects the stress bearing end of a wire rope from being crushed while forming a temporary eye splice using wire rope clips? #27 To find the distance the strands should be unlaid for an eye splice, multiply the diameter of the wire in inches by __________. #28 What is an advantage of the 6X19 class of wire rope over the 6X37 class of wire rope of the same diameter? #29 A metal eye spliced into a wire is called a __________. #30 Which statement(s) is(are) TRUE concerning wire rope?
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