單項選擇題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


您可能感興趣的試卷

你可能感興趣的試題

2.單項選擇題When the steering wheel is turned, oil is directed to the steering gear rams by（）

A.modulating the oil flow with the six-way valve
B.moving the automatic pressure differential valve
C.moving the receiving telemotor which regulates the tow-way valve
D.varying the eccentricity of a floating ting or angle of a tilting box

3.單項選擇題Rudder position is shown on the bridge by the（）

A.rudder angle indicator
B.follow-up gear
C.telemotor position
D.relief valves

4.單項選擇題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

5.單項選擇題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