A.voltage regulator
B.reverse power relay
C.reverse current relay
D.governor control switch
您可能感興趣的試卷
你可能感興趣的試題
A.field excitation of both units is adjusted
B.governors of both units are adjusted
C.phase sequence is altered
D.kilowatt load is evenly divided
A.are less expensive
B.require less maintenance
C.can be started across the line
D.offer a more effective means of controlling speed
A.Alternators
B.Wave guides
C.Exciters
D.Amplidynes
A.quartered
B.unchanged
C.doubled
D.quadrupled
A.both generate alternating voltages
B.both rectify the voltage before delivery
C.are constructed at the same physical size for the same kilowatt rating
D.both supply three-phase power
最新試題
The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
Which one is NOT the ‘clear grounds’ for a more detailed inspection?()
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()
Under MARPOL Code the ship to which it applies has to carry ()
The main purpose of port State control is not to()
When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a()
The condensers located in various stages of a flash evaporator are cooled by()
() is not installed on the main switchboar.