更多"When the helm demands a 20°right ru"的相关试题:
[单项选择]HARD RIGHT RUDDER means（）.
A. put the rudder over to the right all the way
B. jam the rudder against the stops
C. meet a swing to the right，then return to amidships
D. put the rudder over quickly to 15°right rudder
[单项选择]When relieving the helm，the new helmsman should know the（）.
A. Course per magnetic steering compass
B. Gyro error
C. Variation
D. Maximum rudder angle previously used
[单项选择]When the desired rudder angle is attained by a typical double mm electro-hydraulic steering gear,the（）.
A. ram relief valves bypass oil to stop rudder movement
B. six-way valve shifts to the neutral flow position
C. steering pump electric motor is de - energized by the transfer switch
D. follow-up gear takes the hydraulic pump off stroke
[单项选择]When backing a motor propelled lifeboat (right-hand propeller) with the rudder amidships，the stern will back（）.
A. straight
B. to port
C. to starboard
D. None of the above
[单项选择]When a tug is pulling on a hawser at right angles to the ship，and the pilot wants to come ahead or astern on the ship’s engine，care must be taken that the pilot（）.
A. does not break the towline
B. does not get too much way on the vessel
C. keeps a steady course so the towline will remain tight
D. turns the ship toward the direction of pull
[单项选择]The required rudder angle is transmitted hydraulically or electrically from the steering wheel at the bridge to the （）at the steering gear, just above the rudder.
A. transmitter
B. tele-motor
C. hydraulic ram
D. hydraulic cylinder
[单项选择]Rudder motion is prevented from exceeding the movement of the steering wheel by the（）
A. return springs
B. six-way valve
C. follow-up gear
D. differential gear
[单项选择]The actual rudder angle reading is（）
A. the rudder angle indicator reading
B. the desired rudder angle reading
C. the measured rudder angle reading
D. the intended rudder angle reading
[单项选择]Ease the rudder means to（）.
A. decrease the rudder angle
B. move the rudder slowly in the direction of the most recent rudder command
C. bring the rudder amidships
D. steer the course which is your present heading
[单项选择]As the designated rudder angle is being achieved, as a result of the original command input, the steering gear follow-up mechanism is（）
A. in motion, providing a null input
B. not in motion, thus providing a null input
C. in motion, providing an input to place the main pump on maximum stroke
D. in motion, providing an input to place the main pump at null stroke
[单项选择]Under normal operating conditions, the rudder is hydraulically locked unless （）.
A. the manual trick wheel is engaged for steering
B. the variable stroke pump is off stroke
C. a rudder order is given by the control system
D. an electric power system failure occurs at the steering gear
[单项选择]My rudder indicator is（）good working order.
A. in
B. on
C. at
D. for
[单项选择]In an elector-hydraulic steering system, rudder shock is limited by（）
A. a differential gear
B. return springs
C. a hydraulic accumulator
D. relief valves
[单项选择]Midships refers to rudder to be held（）.
A. in position to starboard
B. in position to port
C. in position to anywhere
D. in position fore and aft
[单项选择]The helm command PORT TWENTY means（）.
A. change course twenty degrees to the left
B. put the rudder left twenty degrees
C. put the rudder hard left for the first twenty degrees of swing
D. put the rudder left twenty degrees and then ease back as the vessel starts swinging
[单项选择]（）conveys a signal of desired rudder angle from the bridge and activates the power unit and transmission system unit the desired angle is reached.
A. The control equipment
B. The power unit
C. The transmission system
D. The follow-up mechanism
[单项选择]Rudder position is shown on the bridge by the（）
A. rudder angle indicator
B. follow-up gear
C. telemotor position
D. relief valves
[单项选择]The in the steering gear move the rudder to the required angel（）
A. control equipment
B. power unit
C. transmission mechanisms
D. fittings and pipeline
[单项选择]A twin-screw vessel with a single rudder is making headway. The engines are full speed ahead. There is no wind or current. Which statement is FALSE?（）.
A. If one screw is stopped，the ship will turn toward the side of the stopped screw
B. The principal force which turns the ship is set up by the wake against the forward side of the rudder
C. Turning response by use of the rudder only is greater than on a single-screw vessel
D. With the rudder amidships，the ship will steer a fairly steady course
