Diesel engine propulsion
Diesel electric propulsion
Steam engine propulsion
Gas turbine propulsion
第1题:
Pitted reduction gear teeth having a deep blue color with evidence of overheating have been operated with _______.
A.excessive speed
B.improper warm-up
C.extreme misalignment
D.inadequate lubrication
第2题:
smoky exhaust
starting failure
overload
over speed
第3题:
When transmitted by a reduction gear, diesel engine speed is reduced and the torque available for work
A.remains the same
B.is reduced
C.is increased
D.is eliminated
第4题:
water
babbitt
iron or steel
acids
第5题:
a reduction
an increase
an outing
a downwards
第6题:
Wear occurring at the tips of the reduction gear teeth is usually the result of ______.
A.surface fatigue
B.fretting corrosion
C.heavy overloading
D.gear misalignment
第7题:
Prevents lateral movement of the slow speed gear
Transmits propeller thrust to the hull
Keeps spring bearings in line
Prevents main reduction gear axial movement
第8题:
One of the most common causes of reduction gear failure is gear wear caused by scoring as a result of
A.surface fatigue of the gears
B.an inadequate lube oil film
C.plastic flow of the gears
D.fretting corrosion from water
第9题:
remains the same
is reduced
is increased
is eliminated
第10题:
the sump oil level
oil flow sight glasses
bearing temperatures
all of the above