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ABYC Practice Questions & Answers 100% Solved
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ABYC Practice Questions & Answers 100% Solved
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ABYC Practice Questions & Answers 100% SolvedManometer Diesel Study Guide, Chapter 2 Correct Ans-What is the tool to check engine
back-pressure?
TRUE Diesel Study Guide, Chapter 2 Correct Ans-When checking engine back-pressure, the
engine must be under load to get a valid reading. T/F?
C. 200mV Diesel Study Guide, Chapter 2, pg 23 Correct Ans-"When choosing materials, we
want them to be as close as possible on the Galvanic Series. What is the recommended
separation of corrosion potential?
A. 200V
B. 2000mV
C. 200mV
D. 2V"
D. prevent excessive exhaust back-pressure. Diesel Study Guide, Chapter 2 Correct Ans-"In
setting up a piping system for exhaust gases, the number of sharp bends should be kept to a
minimum to:
A. raise exhaust gas temperature.
B. permit use of a larger diameter pipe.
C. eliminate the need for a silencer.
D. prevent excessive exhaust back-pressure."
, ABYC Practice Questions & Answers 100% Solved
C. Siphon break. Diesel Study Guide, Chapter 2 Correct Ans-"An engine equipped with an
exhaust-mixing elbow is installed below the waterline. What device must be installed in the
raw water discharge hose ahead of the mixing elbow?
A. Manometer.
B. Flow diverter.
C. Siphon break.
D. Flapper valve."
B. Technician B. Diesel Study Guide, Chapter 2 Correct Ans-"Upon inspection of the wet
exhaust system, the technician notices that the exhaust hose is burned near the elbow.
Technician A says that replacing the hose will correct the problem. Technician B says that the
problem is most likely with the cooling system. Which technician is correct?
A. Technician A.
B. Technician B.
C. Both technicians are correct.
D. Neither technician is correct."
A clear hose Diesel Study Guide, Chapter 3 Correct Ans-What is a good trick to see if a
seacock is suffering from aeration?
B. Milky Diesel Study Guide, Chapter 3 Correct Ans-"Water in oil will cause the oil to look:
A. Dark black
B. Milky
, ABYC Practice Questions & Answers 100% Solved
C. Translucent
D. Fluffy brown"
False. Diesel Study Guide, Chapter 3 Correct Ans-Always use Teflon tape on the threads of
pencil zincs. T/F?
Wire reinforced Diesel Study Guide, Chapter 3 Correct Ans-Hose from the seacock to the
sea strainer should be ____ ________.
C. checking all downstream components for impeller pieces Diesel Study Guide, Chapter 3
Correct Ans-"Replacement of a seawater pump impeller should normally include:
A. draining water-lift muffler
B. flushing heat exchanger
C. checking all downstream components for impeller pieces
D. replacing zinc anodes"
C. the exhaust manifold or risers are blocked Diesel Study Guide, Chapter 3 Correct Ans-
"During a sea trial for a complaint of high speed overheating, the technician finds that the
cooling hoses are swollen and very firm when squeezed and the exhaust hoses very hot to the
touch. This most likely indicates:
A. the raw water pump is ingesting air with the seawater
B. the exhaust diameter is too small
C. the exhaust manifold or risers are blocked
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