更多"It （） for an emergency generator to"的相关试题:
[单项选择]The emergency generator or emergency battery is connected to（） on most large ships.
A. distribution boards
B. section boards
C. emergency switch boards
D. main switch boards
[单项选择]Each emergency generator on a mobile offshore drilling unit，when tested，must be run under a full load for at least（）.
A. one hour
B. two hours
C. ten hours
D. four hours
[单项选择]Emergency generator is installed on board mainly to （）
A. connect to the busbar when the load increasing
B. supply power specially to charging panel
C. be put into operation during the ship arriving at or leaving port
D. ensure the power supply to critical equipment after the main switchboard out of power
[单项选择]A diesel driven emergency generator is prevented from being paralleled with the ships service generators by （）
A. an electrical interlock system
B. an automatic paralleling trip switch
C. the synchronizing oscilloscope
D. the reverse current relay
[单项选择]On a ship，each emergency generator must be tested at least once each（）.
A. week
B. month
C. three months
D. six months
[单项选择]An emergency generator, driven by an internal combustion engine, shall be tested under load for a minimum of 2 hours at least once every （）
A. week
B. 2 weeks
C. month
D. 3 months
[单项选择]An emergency diesel generator should automatically shut down in the event of （）
A. dangerous over-speeding
B. a loss of lube oil pressure
C. activation of the fixed CO2 system for the emergency generator space
D. all of the above
[单项选择]Standby or emergency diesel generator day tanks should always be kept full to reduce the possibility of（）
A. sediment contamination
B. fuel filter clogging
C. moisture formation
D. inadequate transfer pump suction head
[单项选择]If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
A. means of rheostat the governor settings
B. a balance coil excitation
C. adjusting the governor settings
D. changing excitation
[单项选择]The Emergency Position Indicating Radiobeacon on a cargo vessel must be stowed（）.
A. in an inside passageway
B. in an approved bracket
C. so that it is accessible from the bridge of the vessel
D. so that it will float free if the vessel sinks
[单项选择]The Emergency Position Indicating Radio beacon on a cargo vessel must be stowed（）.
A. in an inside passageway
B. in an approved bracket
C. so that it is accessible from the bridge of the vessel
D. so that it will float free if the vessel sinks
[单项选择]After you activate your emergency position indicating radiobeacon，you should（）.
A. turn it off for five minutes every half-hour
B. turn it off and on at five-minute intervals
C. turn it off during daylight hours
D. leave it on continuously
[单项选择]After having activated the emergency position indicating radio beacon，you should（）.
A. turn it off for 5 minutes every half-hour
B. turn it off and on at 5 minute intervals
C. turn it off during daylight hours
D. leave it on continuously
[单项选择]The SOLAS convention prescribes that the emergency steering drill should be carried out one time every （） months.
A. 4
B. 3
C. 2
D. 1
[单项选择]Your assigned emergency stations aboard your vessel can be found on the ships （）.
A. muster list
B. certificate of inspection
C. clearance papers
D. permit to proceed
[单项选择]VACUUM GENERATOR的工作条件（）
A. 在地面或空中低于16000英尺
B. 仅在地面
C. 仅在空中低于16000英尺
D. 飞机高度高于16000FT
[单项选择]The alternating current generator supplying a load has a voltage drop resulted from the loadWhen the load has a lagging power factor this voltage drop （）.
A. is small
B. may be neglected
C. is useful
D. is considerable
[单项选择]Generator brushes are staggered to（）
A. reduce current pulsations
B. reduce brush chatter
C. prevent uneven commutator wear
D. allow greater power generation
[单项选择]Emergency escape breathing device on board shall have a duration of service no less than（）.
A. 20 minutes
B. 15 minutes
C. 10 minutes
D. 5 minutes
