Excerpt from U.S. Coast Guard Proceedings of the Marine Safety & Security Council magazine. Nautical Engineering Queries Questions Part—1.
1. Amortisseur windings are installed in a synchronous motor to __________.
A. reduce eddy current losses
B. produce a higher power factor
C. provide a means for starting
D. eliminate arcing between the stator and the rotor
2. Coast Guard regulations (46 CFR) define several acceptable means of closure for ballast and fuel oil tank vents.
One of the acceptable means is by the use of a/an __________.
A. manually operated ball check valve
B. automatically operated hinged closure
C. permanently installed canvas hood
D. corrosion-resistant wire screen
3. A continuous blow is used to __________.
A. regulate the density or salinity of boiler water
B. remove scum from the surface of boiler water
C. permit air to escape while raising steam in a cold boiler
D. remove sludge from the bottom of the water drum
4. What type of engine lubrication oil filter system sends filtered oil directly back to the high-pressure discharge
A. centrifugal purifier system
B. bypass system
C. shunt system
D. batch system
Stay tuned to see the answers to these Nautical Engineering Queries.
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