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ABYC Diesel Exam Practice COMPLETE QUESTIONS & SOLUTIONS|| 2024 LATEST UPDATE! $10.99   Add to cart

Exam (elaborations)

ABYC Diesel Exam Practice COMPLETE QUESTIONS & SOLUTIONS|| 2024 LATEST UPDATE!

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  • Course
  • ABYC Diesel
  • Institution
  • ABYC Diesel

Black soot around the engine compartment openings might indicate: - ANSWER Insufficient engine room ventilation if the engine does not achieve full rpm, what test would be the last to be performed? - ANSWER compression check The exhaust blower switch is activated but the sound coming from the...

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  • November 6, 2024
  • 7
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • abyc diesel
  • ABYC Diesel
  • ABYC Diesel
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ABYC Diesel Exam Practice COMPLETE
QUESTIONS & SOLUTIONS|| 2024 LATEST
UPDATE!

Black soot around the engine compartment openings might indicate: - ANSWER Insufficient engine room
ventilation



if the engine does not achieve full rpm, what test would be the last to be performed? - ANSWER
compression check



The exhaust blower switch is activated but the sound coming from the blower is not normal. After a
period of time, the breaker trips. What is the most likely cause? - ANSWER Blower motor armature
bearings are seizing



what component is/are installed to provide proper clearance about the outside water line? - ANSWER
Exhaust flapper and riser extension



Diesel exhaust systems produce small amounts of a dangerous gas, the gas is: - ANSWER Carbon
Monoxide



While many exhaust silencers can do a good job of reducing noise level, they will be unacceptable if they
- ANSWER set up objectionable back pressure



What wet exhaust system is best used with engines at or below the water line - ANSWER Water lift



Following a recent reposer, the owner complains of overheating at high speed. Technician A says that the
thermostats are most likely the problem. Technician B says that the seawater intake system should be
checked against the MFG specifications, who is correct? - ANSWER Technician B



During operation of the boat the technician notes an oil slick at the exhaust outlet. This most likely
indicates - ANSWER There is a leak in the raw water cooler

, Technician A says the impellers should be routinely replaced. Technician B says that you can extend the
life if you reverse the impeller's direction. Who is Correct? - ANSWER Technician A



Sacrificial anodes are used for galvanic protection in hear exchangers because they are - ANSWER More
anodic than other alloys in the system

According to ABYC standards, what is the minimum bend radius of a control cable? - ANSWER
Manufacturer's recommended minimum



Modern battery testing techniques would include the use of a - ANSWER DVOM



conductance battery testing may require input - ANSWER CCA or MCA`



The ground circuit resistance check ( voltage drop) should be made by connecting the voltmeter -
ANSWER across the ground circuit and observe the meter while cranking



If the electric starter will not crank the engine, the problem may be caused by - ANSWER a run-down
battery

a defective starter

internal engine problems



When testing a starter motor circuit, lower than normal amp clamp reading may indicate: - ANSWER a
loose / corroded cabling



an indication of alternator output can be obtained by - ANSWER comparing battery voltage with engine
running and not running



a technician is hearing a medium frequency rattle with the engine in neutral located at the flywheel end
of the engine. What is a possible cause? - ANSWER damaged flywheel flex-plate



compared to gasoline, diesel fuel is more susceptible to - ANSWER microbe contamination

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