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ABYC Practice Questions with correct Answers
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ABYC Practice Questions with correct Answers
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ABYC Practice Questions with correctAnswers
FALSE. End fittings introduce the possibility of high resistance. TE-4, Conductors -
Answers -A sailboat's rigging is considered a reliable path to ground for lightning? T/F?
Spark igntion Diesel Study Guide, Chapter 1 - Answers -Gasoline engines use what
kind of ignition?
Compression ignition Diesel Study Guide, Chapter 1 - Answers -Diesel engines use
what kind of ignition?
Gasoline engines Diesel Study Guide, Chapter 1 - Answers -Spark ignition are what
kind of engines?
Diesel engines Diesel Study Guide, Chapter 1 - Answers -Compression ignition are
what kind of engines?
750 degrees or more Diesel Study Guide, Chapter 1 - Answers -How hot must a
atomized diesel get before combustion?
TRUE, denser air has more oxygen molecules per cubic foot Diesel Study Guide,
Chapter 1 - Answers -Cooler air is denser than ambient temperature? T/F?
A. The intake stroke only brings air into the cylinder. Diesel Study Guide, Chapter 1 -
Answers -"One of the primary differences between the gasoline-fueled engine four-
stroke cycle and the diesel four-stroke cycle is:
A. The intake stroke only brings air into the cylinder.
B. The compression ratio of the diesel engine is much lower than the same sized
gasoline engine.
C. Fuel gets atomized by the high heat with a diesel engine.
D. The diesel fuel is more volatile than the gasoline."
Manometer Diesel Study Guide, Chapter 2 - Answers -What is the tool to check engine
back-pressure?
TRUE Diesel Study Guide, Chapter 2 - Answers -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 - Answers -"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 - Answers
-"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."
C. Siphon break. Diesel Study Guide, Chapter 2 - Answers -"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 - Answers -"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 - Answers -What is a good trick to see if a
seacock is suffering from aeration?
B. Milky Diesel Study Guide, Chapter 3 - Answers -"Water in oil will cause the oil to
look:
A. Dark black
B. Milky
C. Translucent
D. Fluffy brown"
False. Diesel Study Guide, Chapter 3 - Answers -Always use Teflon tape on the threads
of pencil zincs. T/F?
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