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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
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更多 “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 chambersB The three moving vanes and the three fixed vanes form six pressure chambersC The three moving vanes and the three fixed vanes form nine pressure chambersD The three moving vanes and the three fixed vanes form twelve pressure chambers” 相关考题
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
考题
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
考题
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
考题
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
考题
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
考题
单选题The test of a towing vessel’s steering gear control system includes each item EXCEPT（）.A
a test from the alternative power supply，if installedB
timing the movement of the rudder from hard over to hard overC
verification that the rudder angle indicator shows the actual position of the rudder(s)D
visual inspection of the steering linkage
考题
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?（）A
The six-way valve opensB
The steering service pump motor is stoppedC
The follow-up gear takes the pump off strokeD
The cylinder relief valves bypass oil to the suction side the pump
考题
单选题In the voyage, when carrying out abandon ship drill, should be test every time（）.A
the emergency lighting system for muster and abandon shipB
air/oil emergency shut-downC
M-Eemergency operationD
main/auxiliary steering gear changing
考题
单选题When the steering wheel is turned, oil is directed to the steering gear rams by（）A
modulating the oil flow with the six-way valveB
moving the automatic pressure differential valveC
moving the receiving telemotor which regulates the tow-way valveD
varying the eccentricity of a floating ting or angle of a tilting box
考题
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 chambersB
The three moving vanes and the three fixed vanes form six pressure chambersC
The three moving vanes and the three fixed vanes form nine pressure chambersD
The three moving vanes and the three fixed vanes form twelve pressure chambers
考题
单选题An AC synchronous transmission type remote steering control system consists of a （）.A
transmitter at the steering station and a receiver at the steering engineB
reversible motor at the steering station geared to the steering pumpsC
small induction motor on the bridge which controls the redder through pulleysD
variable displacement hydraulic pump driven by a reversible DC motor
考题
单选题According to the way the steering gear is operated, the steering gear may be divided into: hand - steering, （） and automatic steering.A
hydraulic steeringB
follow-up steeringC
remote control steeringD
air controlled steering
考题
单选题Which of the following is NOT true according to the passage?（）A
Both the main steering gear and the auxiliary steering gear should be operatedB
The alarms fitted to the remote control system should be operatedC
The emergency generator compartment should be checkedD
The communication system between the bridge and the steering gear compartment should be operated
考题
单选题In the voyage, when carrying out abandon ship drill （） should be test every time.A
the emergency lighting system for muster and abandon shipB
air oil emergency shut-downC
ME emergency operationD
main auxiliary steering gear changing
考题
单选题Rotation of the steering wheel on the navigation bridge initiates oil pressure being applied to the steering gear rams by （）.A
regulating the oil flow with the six-way valveB
moving the automatic differential valveC
moving the receiving tele-motor which regulates the two-way valveD
varying the angle of a tilting box or eccentricity of a floating ring
考题
单选题Under rotary pumps are the gear, （）, cam-and-piston and screw types.A
reciprocatingB
diffuserC
turbineD
vane
考题
单选题In （） the control action is independent on(of) the output.A
a closed loop control systemB
an open loop control systemC
a boiler control systemD
a steering gear control system
考题
单选题Under normal operating conditions, the rudder is hydraulically locked unless （）.A
the manual trick wheel is engaged for steeringB
the variable stroke pump is off strokeC
a rudder order is given by the control systemD
an electric power system failure occurs at the steering gear
考题
单选题The（） of the telemotor is mounted on the steering gear.A
transmitterB
receiverC
pipesD
charging unit
考题
单选题Ship’s steering gear refers to（）.A
cargo handling machinesB
deck winches and derricksC
engine-room toolsD
course controlling system
考题
单选题The （） in the steering gear system provides the force.A
control equipmentB
power unitC
transmission mechanismsD
fittings and pipeline
考题
单选题A power failure in the hydraulic system of a compact type steering gear would cause the rudder to（）A
swing 35°right or leftB
remain locked in its last positionC
move to the mid-ship position automaticallyD
jam against the rudder emergency stops
考题
单选题Which of the following types of hydraulic pumps would be used in a steering system?（）A
LobeB
ScrewC
Radial pistonD
Volute
考题
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?（）A
The follow-up gearB
The rudder angle indicatorC
The synchronous electric transmitterD
A rudder angle limit switch
考题
单选题With reference to operating a four-ram steering gear system under emergency conditions, which one of the following statements is incorrect?（）A
Only one pump should be used at any timeB
The ship speed should be reduced to 70% of the normalC
Watch keeping of the steering gear should be increasedD
Limitations of the steering gear should be logged but the bridge need not be informed
考题
单选题With reference to rules governing steering gear, which one of the following rules is incorrect? （）A
It is required that all ships are provided with two independent steering gear systems that is one main and one auxiliaryB
The auxiliary gear could be power operated in passenger shipsC
The auxiliary gear must be of adequate strength and sufficient to steer a ship at navigable speedD
All moving parts of the steering gear must be guarded against any possible damage
考题
单选题On an electro-hydraulic steering gear, which of the listed devices will keep the rudder from over-traveling the bridge signal?（）A
Rudder angle indicatorB
Follow-up gearC
Electric transmitterD
Rudder angle limit switch
考题
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（）.A
Non-follow-upB
Rudder adjustmentC
Weather adjustmentD
All the above may be activated
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