Smokeboat Quiz #9

Main Propulsion - Part 7.

1) The air in the engine generators is cooled by:
a) salt water
b) fresh water
c) oil from oil cooler
d) self contained freon unit


3) In order not to restrict the flow of oil between bearing halves, they are beveled:
a) 5 degrees
b) 10 degrees
c) 15 degrees
d) 20 degrees


5) The coupling between the crankshaft and the generator on a GM engine is called a _____ coupling.
a) bolted
b) solid
c) elastic
d) splined ring


7) On the F-M 38E 5 1/4 7 cylinder engine, scavenging air is supplied at a pressure of:
a) 2 to 5 psi
b) 3 to 6 psi
c) 4 to 6 psi
d) 5 to 7 psi


9) When an F-M engine has been stopped by the overspeed governor:
a) the fuel racks will cut in again automatically, when the engine speed is back below 700 RPM
b) the engine will not start again until the control shaft lever has been moved to 'start' position
c) the engine will not start again until the reset lever has been moved in the direction indicated on the name plate
d) the engine must be allowed to come to rest before any attempt can be made to reset the governor
2) The record of wear and parts renewed on engines is logged in the:
a) systematic log book
b) engine room repair log
c) spare parts log
d) ships alterations


4) When the bearings are removed for long periods of overhaul, they should be wrapped in: 
a) cotton rags
b) soft waste rags
c) canvas
d) burlap


6) When aligning the generator and the engine on a GM, the engine thrust bearing should have _____ clearance.
a) 0.025
b) 0.0285
c) 0.030
d) 0.0315


8) The seal ring in the joint between the liner and the lower deck plate in a GM engine is made of:
a) copper
b) copper-asbestos
c) asbestos
d) neoprene


10) The engine framework that possesses the advantage of combining greatest possible strength, lightest possible weight and greatest stress resisting qualities is:
a) cast iron type
b) forged type
c) rivited type
d) welded steel type

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