11-39.
Assume the air brake to the propeller
shaft is inoperative and the engine must
be used for maneuvering. Which of the
following is NOT a step in the procedure
for continuing engine operation?
1. Increase the reducing valve
air pressure
2.
Use the throttle to control
engine speed
3. Notify the OOD and the engineer
officer
4.
Secure the air brake system
11-40. Manual
operation of the clutch dump valve
permits continued operation of the
engine after failure of which of the
following parts? 1.
Speed governor
2. Propeller shaft pneumatic
brake 3.
Coupling lube oil regulating valve
4. Thermostat
control valve 11-41.
Assume you have removed the inspection
plate to a faulty heat exchanger to
observe for leakage.
After plugging the
expansion tank vent, you should check
for leaks by pressurizing which of the
following parts of the ship's cooler?
1. The
saltwater side from the ship's air
supply system 2.
The freshwater side from the ship's
air supply system
3. The saltwater side from the
ship's freshwater system
4. The
freshwater side from the ship's
freshwater system 11-42.
During an emergency, which of the
following steps should you take to allow
an engine to continue operating with a
leaking heat exchanger?
1.
Request permission to speed up the
affected engine and manually
increase the freshwater cooling
pressure
2.
Request permission to slow down the
affected engine and manually reduce
the saltwater cooling pressure
3. Keep a
constant watch for any abnormal
temperatures or pressures and inform
the engineer officer of the operating
conditions
4.
Roth 2 and 3 above
In answering questions 11-43 through 11-45,
select the action in column B that should be
taken to correct the casualty in column A.
A. Casualties
B. Actions 11-43.
Propeller shaft
1. Renew the
pneumatic brake
Oil fails to operate
2.
Regulate the
11-44. Diesel engine main
valves shaft
bearings over- manually
heat due to grit
or dirt 3.
Check the
electri- 11-45.
Hydraulic coupling
cal and is overheating
pressure
control switches to
the air
control valve
4.
Cross-connect
the twin hydraulic
coupling
systems 11-46.
What is the best emergency treatment
if an overheated mainshaft bearing
is found to be fitted improperly?
1.
Renew the oil
2.
Replace the oil rings
3. Provide
an abundant supply of oil 4.
Operate at low speeds until repairs
can be made
11-47. Which of the following
casualties should be investigated by
means of a check on the oil
discharge pressure? 1.
Abnormal main shaft vibration
2.
Abnormal noise in the reduction gear
3.
Oil throwing by a coupling
4.
Inoperative propeller shaft
pneumatic brake
11-48. What is the first
corrective action you should take if
one of a ship's two propulsion shafts
begins to vibrate excessively?
1.
Slow both shafts
2.
Slow the affected shaft
3.
Investigate the fairwaters
4.
Stop and secure the affected shaft
71
