COMPETENCE 9 – Maintenance and Repair of Shipboard Machinery and Equipment
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#1. Leakage over the ends of the blade tips, as a result of the pressure differential between each row of blades in a reaction turbine, can be reduced with a blade design known as.
Incorrect!
#2. The purpose of an oil mist detector in a main propulsion diesel engine is to warn of:
Incorrect!
#3. Lube oil contamination will increase due to normal wear of engine components as a result of:
Incorrect!
#4. If your vessel burns 6 tons of fuel per hour at 22 knots, how many tons per hour will it burn at 17 knots?
Incorrect!
#5. The best type of chisel to use for cutting a keyway is the:
Incorrect!
#6. It is the amount of heat released by a substance during complete combustion of unit of mass of that said substance:
Incorrect!
#7. In the case of a variable speed centrifugal pump:
Incorrect!
#8. Safety valve gags should only be installed hand tight in order to prevent:
Incorrect!
#9. To obtain a 1/2 inch per foot taper on an 18 inch work piece, the tailstock of the lathe must be set over:
Incorrect!
#10. Tapping threads into a blind hole should be finished by using a:
Incorrect!
#11. It is the physical or chemical property of the fuel or diesel oil which contain the amount of heat released by the combustion of a mass of fuel?
Incorrect!
#12. Persistent knocking in one cylinder of an eight cylinder diesel engine would MOST likely be caused by.
Incorrect!
#13. If your vessel burns 8 tons of fuel per hour at 15 knots, how many tons per hour will it burn at 19 knots?
Incorrect!
#14. Prior to relieving the watch you should first check the fire room status by verifying the boiler water level and:
Incorrect!
#15. It is the tendency of a material to suddenly break with little or no prior deformation:
Incorrect!
There are 15 questions for the actual examination for Competence 9 for OIC-EW with a passing rate of 70%. This means that you are only allowed to make 4 mistakes.
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