Pass Benchmark: 70% • Standard: USCG NMC / 46 CFR
USCG Engine Safety (Supplementary) (Set 3)
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Question 1 of 30
Casing drains may be required on a waste heat boiler gas passage side to __________.
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30 MCQs #1 Casing drains may be required on a waste heat boiler gas passage side to __________. #2 As shown in the illustration, the function of component "1" is to ________. MO-0128 #3 As shown in the illustration, what component would normally be installed at location "D? MO-0128 #4 The boiler shown in the illustration would be classed as __________. MO-0064 #5 A photoelectric cell installed in an automatically fired auxiliary boiler burner management system __________. #6 The color of the diesel engine detergent type lube oil in an operating diesel engine is black, this indicates __________. #7 When a leak has developed in the lube oil cooler of an operating diesel engine, which of the listed operating conditions can be expected to occur? #8 On small diesel engines, a noticeable decrease in the time interval between the replacement of the lube filter cartridge indicates __________. #9 Irregular engine speed in a diesel generator can be caused by __________. #10 A modern centrifuge, similar to the device shown in the illustration, is opened for periodic cleaning. The most common cause of operating failure after reassembling, is due to __________. MO-0012 #11 On a diesel engine with direct-cylinder admission air starting, a leaking air starting valve would be indicated by __________. #12 White smoke exhausting from a diesel engine can result from __________. #13 A diesel engine may be hard to start if the __________. #14 QA main propulsion diesel engine is operating at 80% load and normal speed while the vessel is in calm seas. As the intensity of the seas increase, the engine speed governor maintains the same RPM, although the load indicator indicates an increase in load beyond its allowable limits. Which of the following actions should be taken? #15 The power output of a turbocharged diesel engine will drop if the cooling water flow through the after cooler is interrupted because the __________. #16 Which condition indicates the air side fouling of an after cooler on a turbocharged diesel engine? #17 Which of the following problems can cause an above normal air temperature to develop in the intake manifold of a turbocharged and after cooled diesel engine? #18 Corrosion and grooving on the blading of an exhaust driven turbocharger is caused by certain components of residual fuel oils. These components are vanadium, sodium, and __________. #19 A sudden power loss from a turbocharged and after cooled diesel engine is an indication of a/an __________. #20 A thin film of oil on the lobes of a Roots-type blower indicates __________. #21 Excessive mechanical and pulsating vibrations developed in a main propulsion diesel engine may be more likely to cause damage to an attached __________. #22 What is the average piston speed of a five cylinder low- speed engine with a bore of 29.5 inches (75 cm), a stroke of 63 inches (160 cm), and a rated speed of 123 RPM? #23 A six cylinder, two stroke/cycle diesel engine is 83% efficient and has a cylinder constant of 0.998 while operating with a mean effective pressure of 15 kg/cm2 at a speed of 100 RPM. What is the metric brake horse power developed? #24 An eight cylinder, four stroke/cycle, single acting diesel engine has a 650 mm bore and a 1400 mm stroke. What will be the developed indicated metric horsepower if the average mean effective pressure is 30 kg/cm2 at a speed of 100 RPM? #25 The speed of the camshaft in a two-stroke/cycle diesel engine, running at 950 RPM, is __________. #26 If the piston stroke in a four stroke cycle diesel engine is 10 1/2 inches and the speed of rotation of the crankshaft is 720 RPM, what is the average piston speed? #27 A four cylinder, four stroke/cycle, single acting diesel engine has a 740 mm bore and a 1500 mm stroke. What indicated power will be developed if the average mean effective pressure is 18 kg/cm2 at a speed of 90 RPM? #28 Which of the following conditions will cause the engine to operate in area "A" of the diagram shown in the illustration? Illustration MO-0126 #29 The indicator card shown in the illustration is produced with a/an __________. Illustration MO-0108 #30 In the pressure-volume diagram, shown in the illustration, what occurs between points "e" and "f"? Illustration MO-0035
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