单选题With reference to a rotary vane steering gear system, which one of the following statements is true?（）AThe three moving vanes and the three fixed vanes form three pressure chambersBThe three moving vanes and the three fixed vanes form six pressure chambersCThe three moving vanes and the three fixed vanes form nine pressure chambersDThe three moving vanes and the three fixed vanes form twelve pressure chambers
单选题
With reference to a rotary vane steering gear system, which one of the following statements is true?（）
A
The three moving vanes and the three fixed vanes form three pressure chambers
B
The three moving vanes and the three fixed vanes form six pressure chambers
C
The three moving vanes and the three fixed vanes form nine pressure chambers
D
The three moving vanes and the three fixed vanes form twelve pressure chambers
参考解析
解析：
暂无解析
相关考题：
Which statement is NOT true?A.While displacement pump works, volume of the working chamber will increase and decrease alternatelyB.A gear pump always has two gearsC.Any vane pump will have a rotor within a ringD.A balanced vane pump has two outlet ports and they are positioned symmetrically
Which statement is NOT true?A.In a simple vane pump, the rotor and cam ring are exactly concentricB.Balanced vane pump has an elliptical cam ringC.Liquid in both gear pump and vane pump are forced out to the outlet.D.Balanced vane pumps can work at a higher pressure than the simple vane pump
In ______ the control action is independent on the output.A.a closed loop control systemB.an open loop control systemC.a boiler control systemD.a steering gear control system
When steering by hand，which of the following may be a functional input to the steering gear as a result of turning the wheel ________．A.Non-follow-upB.Rudder adjustmentC.Weather adjustmentD.All the above may be activated
Which entry is NOT required in the Official Logbook?______A.Steering gear testsB.Position of the load line and freeboard upon sailingC.Commencemet and termination of cargo operationsD.Closure of hatches and sideports upon sailing
单选题The test of a towing vessel’s steering gear control system includes each item EXCEPT（）.Aa test from the alternative power supply，if installedBtiming the movement of the rudder from hard over to hard overCverification that the rudder angle indicator shows the actual position of the rudder(s)Dvisual inspection of the steering linkage
单选题When the helm demands a 20°right rudder movement from an electro-hydraulic steering gear, which of the listed actions will be the FIRST action to happen when this rudder position is attained?（）AThe six-way valve opensBThe steering service pump motor is stoppedCThe follow-up gear takes the pump off strokeDThe cylinder relief valves bypass oil to the suction side the pump
单选题In the voyage, when carrying out abandon ship drill, should be test every time（）.Athe emergency lighting system for muster and abandon shipBair/oil emergency shut-downCM-Eemergency operationDmain/auxiliary steering gear changing
单选题When the steering wheel is turned, oil is directed to the steering gear rams by（）Amodulating the oil flow with the six-way valveBmoving the automatic pressure differential valveCmoving the receiving telemotor which regulates the tow-way valveDvarying the eccentricity of a floating ting or angle of a tilting box
单选题With reference to a rotary vane steering gear system, which one of the following statements is true?（）AThe three moving vanes and the three fixed vanes form three pressure chambersBThe three moving vanes and the three fixed vanes form six pressure chambersCThe three moving vanes and the three fixed vanes form nine pressure chambersDThe three moving vanes and the three fixed vanes form twelve pressure chambers
单选题An AC synchronous transmission type remote steering control system consists of a （）.Atransmitter at the steering station and a receiver at the steering engineBreversible motor at the steering station geared to the steering pumpsCsmall induction motor on the bridge which controls the redder through pulleysDvariable displacement hydraulic pump driven by a reversible DC motor
单选题According to the way the steering gear is operated, the steering gear may be divided into: hand - steering, （） and automatic steering.Ahydraulic steeringBfollow-up steeringCremote control steeringDair controlled steering
单选题Which of the following is NOT true according to the passage?（）ABoth the main steering gear and the auxiliary steering gear should be operatedBThe alarms fitted to the remote control system should be operatedCThe emergency generator compartment should be checkedDThe communication system between the bridge and the steering gear compartment should be operated
单选题In the voyage, when carrying out abandon ship drill （） should be test every time.Athe emergency lighting system for muster and abandon shipBair oil emergency shut-downCME emergency operationDmain auxiliary steering gear changing
单选题Rotation of the steering wheel on the navigation bridge initiates oil pressure being applied to the steering gear rams by （）.Aregulating the oil flow with the six-way valveBmoving the automatic differential valveCmoving the receiving tele-motor which regulates the two-way valveDvarying the angle of a tilting box or eccentricity of a floating ring
单选题Under rotary pumps are the gear, （）, cam-and-piston and screw types.AreciprocatingBdiffuserCturbineDvane
单选题In （） the control action is independent on(of) the output.Aa closed loop control systemBan open loop control systemCa boiler control systemDa steering gear control system
单选题Under normal operating conditions, the rudder is hydraulically locked unless （）.Athe manual trick wheel is engaged for steeringBthe variable stroke pump is off strokeCa rudder order is given by the control systemDan electric power system failure occurs at the steering gear
单选题The（） of the telemotor is mounted on the steering gear.AtransmitterBreceiverCpipesDcharging unit
单选题Ship’s steering gear refers to（）.Acargo handling machinesBdeck winches and derricksCengine-room toolsDcourse controlling system
单选题The （） in the steering gear system provides the force.Acontrol equipmentBpower unitCtransmission mechanismsDfittings and pipeline
单选题A power failure in the hydraulic system of a compact type steering gear would cause the rudder to（）Aswing 35°right or leftBremain locked in its last positionCmove to the mid-ship position automaticallyDjam against the rudder emergency stops
单选题Which of the following types of hydraulic pumps would be used in a steering system?（）ALobeBScrewCRadial pistonDVolute
单选题Which of the devices listed, when used on an electro-hydraulic steering gear, keeps the movement of the redder closely in step with the steering wheel?（）AThe follow-up gearBThe rudder angle indicatorCThe synchronous electric transmitterDA rudder angle limit switch
单选题With reference to operating a four-ram steering gear system under emergency conditions, which one of the following statements is incorrect?（）AOnly one pump should be used at any timeBThe ship speed should be reduced to 70% of the normalCWatch keeping of the steering gear should be increasedDLimitations of the steering gear should be logged but the bridge need not be informed
单选题With reference to rules governing steering gear, which one of the following rules is incorrect? （）AIt is required that all ships are provided with two independent steering gear systems that is one main and one auxiliaryBThe auxiliary gear could be power operated in passenger shipsCThe auxiliary gear must be of adequate strength and sufficient to steer a ship at navigable speedDAll moving parts of the steering gear must be guarded against any possible damage
单选题On an electro-hydraulic steering gear, which of the listed devices will keep the rudder from over-traveling the bridge signal?（）ARudder angle indicatorBFollow-up gearCElectric transmitterDRudder angle limit switch
单选题When steering on autopilot which of the following input conditions may NOT have an effect on the control of the steering gear（）.ANon-follow-upBRudder adjustmentCWeather adjustmentDAll the above may be activated