更多"Dual electro-hydraulic steering uni"的相关试题:
[单项选择]The steering oar in a lifeboat is usually referred to as the（）.
A. bumpkin oar
B. stroke oar
C. sweep oar
D. becket oar
[单项选择]Which maintenance functions can a GMDSS Radio Operator perform（）.
A. The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent
B. The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles
C. All levels of maintenance must be performed by a licensed GMDSS Radio Maintainer
D. The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints
[单项选择]A bonding cable should be connected for cargo operations aboards a tank vessel as soon as the（）.
A. cargo has been loaded or discharged
B. cargo ghose is connected
C. cargo pumps are started
D. vessel is ready to handle cargo
[单项选择]The load between two steam-driven alternators operating in parallel may be adjusted by varying （）
A. the speed of the alternators
B. the field strength of the machines
C. the power factor of the alternators
D. steam supply to the prime movers
[单项选择]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-up
B. Rudder adjustment
C. Weather adjustment
D. All the above may be activated
[单项选择]Most hydraulic steering gears are fitted with relief valves which（）
A. function when the rudder is amidships
B. relieve excess whip pressure from the hydraulic oil system
C. protect the piping assembly from external rudder shock
D. relieve excessive telemotor pressure
[单项选择]During steering gear test should be moved through its full travel in both directions（）
A. pump
B. the cylinder
C. the hunting gear
D. the rudder
[单项选择]Hydraulic pumps most commonly used in steering systems are of the （）.
A. lobe type
B. screw type
C. axial piston type
D. volute type
[单项选择]Steering gears can be arranged with hydraulic control equipment known as a （）, or with electrical control equipment.
A. telemeter
B. telemanometer
C. telemotor
D. telemometer
[单项选择]When the vessels steering wheel on the navigation bridge is turned, the difference existing between the position of the wheel and that of the rudder is known as （）.
A. proportional band
B. the error signal
C. the reset signal
D. feedback
[单项选择]Steering a motor lifeboat broadside to the sea could cause it to（）.
A. capsize
B. run smoother
C. run faster
D. sink
[单项选择]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 valve
B. moving the automatic differential valve
C. moving the receiving tele-motor which regulates the two-way valve
D. varying the angle of a tilting box or eccentricity of a floating ring
[单项选择]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
[单项选择]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 auxiliary
B. The auxiliary gear could be power operated in passenger ships
C. The auxiliary gear must be of adequate strength and sufficient to steer a ship at navigable speed
D. All moving parts of the steering gear must be guarded against any possible damage
[单项选择]The steering and sailing rules for vessels in restricted visibility apply to vessels（）.
A. in sight of one another in fog
B. navigating in or near an area of restricted visibility
C. only if they are showing special purpose lights
D. only if they have operational radar
[单项选择]The power and torque capability of the steering system must be such that the rudder can be swung from （）one side to（）the other side with the ship at maximum speed.
A. 35°；35°
B. 35°；30°
C. 15°；15°
D. 28°；60°
[单项选择]The auxiliary steering gear must be capable of being brought speedily into operation and be able to put the rudder over from 15 degrees on one side to 15 degrees on the other side in no more than （） with the ship at its deepest service draught and running ahead at the greater of one half of the maximum service speed or （）.
A. 28 seconds；7 knots
B. 28 seconds；14 knots
C. 60 seconds；7 knots
D. 60 seconds；14 knots
[单项选择]When steering a tow downstream around the shape of a sand bar，and staying on the proper side of the buoys，an operator should be cautious of（）.
A. eddies under the bar
B. swift current under the bar causing loss of control
C. cross-currents pushing the tow away from the bar
D. cross-currents pushing the tow into the bar
[单项选择]According to the way the steering gear is operated, the steering gear may be divided into: hand - steering, （） and automatic steering.
A. hydraulic steering
B. follow-up steering
C. remote control steering
D. air controlled steering
