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The emergency generator or emergency battery is connected to（） on most large ships.
A、the capstan
B、the collector
C、the panels
D、the surface
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The load sharing characteristics of two diesel generator operating in parallel are mostly dependent on their governor （）.
A . load limit settings
B . idle speed settings
C . speed limit settings
D . speed droop setting
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The most inefficient method of voltage reduction from the stand point of power loss, is a/an （）
A . capacitor in series with the load
B . inductor in series with the load
C . capacitor and inductor in series with the load
D . resistor in series with the load
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Equal power factors on paralleled AC generators are maintained by an automatic （）.
A . voltage regulator
B . reverse power relay
C . reverse current relay
D . governor control switch
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The most common type of AC service generator found aboard ship is the stationary （）.
A . electromagnetic field, revolving armature type
B . electromagnetic field, oscillatory armature type
C . armature, oscillatory electromagnet field type
D . armature, rotating electromagnetic field type
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The output voltage of a three-phase alternator is regulated by the （）.
A . AC voltage to the armature
B . AC voltage to the field
C . DC voltage to the armature
D . DC voltage to the field
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Prior to starting an AC generator prime mover, the voltage regulator cutout switch should be placed in the （）
A . manual position
B . bus neutral position
C . raise voltage position
D . transfer positio
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The power generated in the turbine must （） that required by the compressor.
A . be less than
B . be larger than
C . be as large as
D . not be so large a
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（）on board ship are used to control and distribute the electrical energy generated by generators.
A . A.Governors
B . B.Alternators
C . C.Blackboards
D . D.Switchboards
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The output voltage of a 440 volt, 60 hertz, AC generator is controlled by the （）.
A . prime mover speed
B . exciter output voltage
C . load on the alternator
D . number of pole
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The voltage output of an AC generator is controlled by（）
A . varying the DC exciter voltage
B . varying the reluctance of the air gap
C . regulating the speed of the prime mover
D . shorting out part of the armature winding
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The frequency of an AC generator is adjusted by means of the （）
A . main alternator field rheostat
B . exciter field rheostat
C . prime mover governor control
D . equalizing reactor
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The instantaneous reduction in voltage of an AC generator, resulting from an increase in load, and prior to the automatic voltage regulator correcting the situation, is called voltage （）.
A . droop
B . drop
C . dip
D . regulatio
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Excessive vibration in an operating diesel generator may be caused by （）
A . electrical overload
B . surging at governed RPM
C . loose engine mounting bolts
D . coolant leaking into the cylinder
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The voltage developed by an AC generator is controlled by varying the （）
A . speed of the prime mover
B . AC excitation to the field
C . DC excitation to the field
D . DC excitation of the voltage regulator
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Most often （） is attached to the engine-propeller shaft for efficient electric power generation.
A、An alternator
B、An electric motor
C、A diesel engine
D、A main switchboard
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By default， what type of SSH server key is generated by Cisco NX-OS Software？（）
A . DSA key generated with 512 bits
B . RSA key generated with 768 bits
C . RSA key generated with 1024 bits
D . DSA key generated with 1024 bits
E . RSA key generated with 2048 bit
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The frequency of the alternating current generated by a synchronous generator is governed by the speed and the（）
A . full excitation
B . load
C . power factor
D . number of pole
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The initial voltage of self-excitation generator set up by（）
A . residual magnetism
B . voltage regulator
C . electrical current for excitation
D . the other running generator
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The load rating of an AC generator is determined by the（）
A . internal heat it can withstand
B . load it can carry continuously
C . load it is capable of supplying
D . overload it can carry for a specified time only
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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
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Which of the following types of power is most likely to generate followers’ resistance?_____
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It is fitted with a small transformer, by means of （) the voltage of the currency can
A．A.whom
B．B.which
C．C.what
D．D.that
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A form of continuous research which result in secondary data often bought in by marketers is that generated by ( ).
A:consumer panels
B:External sources
C:Internal sources
D:board
