附件24.5 C.Rated flow-rate D.Minimum flow-rate (5)We have known that single-rod piston cylinder have effective area A1=2A2, flow rate q.If the hydraulic cylinder achieve differential,then the flow rate of the large cavity is(D).If it is not the differential connections,then the flow rate of the small cavity is(A). A.0.5gB.1.5g C.1.75qD.2g (6)Horizontal Double-rod piston cylinder is connected to three position four way solenoid-operated directional conro valve in the hydraulic system.It is required that when the three position four way solenoid-operated directional control valve is on the condition of netral positionsthe pump is in a state of unloading and the cylinder is in a state of floating.The mid position function should be selected for (D).And then if the cylinder is in a state of motionless which should be selected for (B). A.O type B.M type C.Ytype D.Htype (7)In order to ensure the constant pressure difference of throttle when the load change. the speed-regulating valve always consists of throttle and (B)with series connection and then the bypass speed-regulating valve consists of throttle and(D)with parallel connection. A.Pressure redueing valve B.Fixed differential pressure-reducing valve C.Non-return valve D.Differential pressure reliefvalve (8)Rotating speed of the motor will (B),Output power of the pump will (C)when the torque driven by hydraulic motor is smaller in the volume speed-regulating circuit of fixed displacement pump-variable displacement motor. A.Enlarge B.Remain practically unchanged C.Decrease D.Zero 2.Fill in the blanks (1)Hydraulic transmission system consists of energ portionactuator portion control element、4 ssistant elemen坐、working oil. (2)The liquid have two flow state in the pipeline,viscous foree play a_leading role for aminar fow,inertial force play a leading role for turbulent.The liquid flow state can be judged by Revnolds number. (3)In order to eliminate the phenomenon of surrounded oil,most gear pumps are designed with relief grooves on the front and rear cover boards or floating sideboard.The chamber connects with the out-let port when the volume of the chamber changes from the maximum to zero,and with the inlet port when it changes back from zero to the 附件 24.5 C. Rated flow-rate D. Minimum flow-rate (5) We have known that single-rod piston cylinder have effective area A1 = 2A2, flow rate q. If the hydraulic cylinder achieve differential, then the flow rate of the large cavity is ( D ). If it is not the differential connections, then the flow rate of the small cavity is ( A ). A. 0.5q B. 1.5q C. 1.75q D. 2q (6) Horizontal Double-rod piston cylinder is connected to three position four way solenoid-operated directional control valve in the hydraulic system. It is required that when the three position four way solenoid-operated directional control valve is on the condition of neutral positions ,the pump is in a state of unloading and the cylinder is in a state of floating. The mid position function should be selected for ( D ). And then if the cylinder is in a state of motionless which should be selected for ( B ). A. O type B. M type C. Y type D. H type (7) In order to ensure the constant pressure difference of throttle when the load change, the speed-regulating valve always consists of throttle and ( B ) with series connection, and then the bypass speed-regulating valve consists of throttle and ( D ) with parallel connection. A. Pressure reducing valve B. Fixed differential pressure-reducing valve C. Non-return valve D. Differential pressure relief valve (8) Rotating speed of the motor will ( B ) , Output power of the pump will ( C )when the torque driven by hydraulic motor is smaller in the volume speed-regulating circuit of fixed displacement pump-variable displacement motor. A. Enlarge B. Remain practically unchanged C. Decrease D. Zero 2. Fill in the blanks (1) Hydraulic transmission system consists of energy portion 、actuator portion、 control elements 、assistant elements 、working oil . (2) The liquid have two flow state in the pipeline ，viscous force play a leading role for laminar flow，inertial force play a leading role for turbulent .The liquid flow state can be judged by Reynolds number. (3) In order to eliminate the phenomenon of surrounded oil ,most gear pumps are designed with relief grooves on the front and rear cover boards or floating sideboard. The chamber connects with the out-let port when the volume of the chamber changes from the maximum to zero, and with the inlet port when it changes back from zero to the 2