ABYC Diesel Exam Practice Questions & Answers (SCORED A+)
10 views 0 purchase
Course
ABYC Diesel
Institution
ABYC Diesel
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 ...
ABYC Diesel Exam Practice Questions &
Answers (SCORED A+)
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
When re-installing an oil cooler, technician A says that the oil flow should be opposite that of the water flow. Technician B says that the oil and water flow should go in the same direction. Who is correct? -ANSWER - Technician A When draining a seawater cooled engine, the technician removes a drain plug and no water comes out. What is the most likely cause? -ANSWER - it may be blocked, use a tool to remove the blockage
What component is used to transfer heat from engine coolant to seawater in a closed cooling system? -ANSWER - heat exchanger
What doe MSDA stand for? -ANSWER - Material Safety Data Sheets
Exhaust gases leaking into the coolant system may be caused by a defective -
ANSWER - Cylinder-head Gasket
Coolant conditioner filters should be replaced: -ANSWER - According to manufacturers specification
Premature engine drive belt failure may be caused by -ANSWER - misalignment of pulleys
Which factors must be considered when installing/adjusting the transmission shift cable? -ANSWER - second station controls
cracks in the jacket
kinks or tight bends
The owner complains that it takes two hands to operate a single lever control. Technician A says that the cable may be too long and improperly routed. Technician B says that the control head may need cleaning and lubricating. Which technician is correct? -ANSWER - Both are correct
To adjust a control cable, the technician should: -ANSWER - Adjust the terminal eye/cable anchor on the cable
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
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Topgrades20. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.19. You're not tied to anything after your purchase.
