更多"An axial piston, variable stroke pu"的相关试题:
[单项选择]The delivery rate of a variable stroke axial piston hydraulic pump is controlled by varying the position of the （）.
A. slide block
B. tilting box
C. pintle
D. reaction ring
[单项选择]When the tilting box of a variable stroke axial-piston pump is perpendicular to the pump shaft, which of the following conditions will exist?（）
A. The pistons reciprocate
B. The ‘B’ end cylinder barrel rotates
C. There is no fluid flow
D. Power is transmitted hydraulically
[单项选择]The four-stroke engine is used for （） and sometimes for main propulsion with a gearbox to provide a propeller speed of between 90 to 120 rev/min.
A. alternator
B. turbo-charger
C. remote controller
D. windlass
[单项选择]The pump used to send the bilge water into the oily water separator（）the mixture because this might create finer oil particles.
A. should agitate
B. should not agitate
C. should mix up
D. should not add up
[单项选择]The lube oil pump used in a diesel engine is a （）.
A. volute pump
B. centrifugal pump
C. diaphragm pump
D. gear pump
[单项选择]With reference to an axial piston pump, which one of the following statements is true?（）
A. The cylindrical barrel is coupled to the motor
B. The cylindrical barrel has an odd number of bores
C. The bores end in sockets
D. The sockets fit in the swash plate
[单项选择]An axial轴向 piston pump differs from a radial piston pump as the pistons of an axial piston pump are positioned （）.
A. radially from the shaft
B. parallel to each other and to the shaft
C. parallel to each other but at a right angle to the shaft
D. at an angle to each other and to the shaft
[单项选择]The （）pump is usually used as the bilge feed pump to an oily water separator.
A. turbine
B. screw
C. vane
D. ejector
[单项选择]The effective pump stroke of an individual port-and-helix fuel injection pump is determined by the （）
A. fuel delivery pressure
B. pump plunger diameter
C. plunger control rack position
D. total pump stroke
[单项选择]The pump has a constant stroke and the amount of fuel delivered is regulated by rotating （） which has a specially arranged helical groove cut into it.
A. the pump cylinder
B. the pump cam
C. the pump plunger
D. the pump miler
[单项选择]If an emergency pump control is used as the emergency shutdown on a tank vessel，it must（）.
A. stop the flow of oil at the main deck manifold
B. prevent the oil from leaving the shore facility
C. prevent the oil from siphoning through the pump
D. None of the above
[单项选择]The （）pump is usually used as the lubricating oil pump.
A. turbine
B. screw
C. vaneejector
D. centrifugal
[单项选择]The （）pump is usually used as the emergency bilge pump.
A. turbine
B. screw
C. vane
D. ejector
[简答题]简述H-pump stroke time out报警信息的含义及处理方法。
[单项选择]On a ship，a fire pump may be used for other purposes if（）.
A. the other services are run off a reducing station with a pressure gage
B. a separate fire pump is available for use on the fire main
C. all other services are operated by a manifold near the pump
D. All of the above
[单项选择]A fire pump may be used for other purposes if（）.
A. the other services are run off a reducing station with a pressure gage
B. one of the required pumps is kept available for use on the fire main system at all times
C. no relief valves are installed
D. all of the above conditions are met
[单项选择]Oil control rings used in two-stroke/cycle diesel engines are located near the bottom of the piston skirt in order to （）
A. increase the liner area covered by the oil film
B. maintain an oil film on the lower liner where scuffing is prevalent
C. keep excess oil away from intake and exhaust ports
D. help cushion piston skirt side thrust by providing a hydrodynamic oil wedge
