附件24.4 Flow rate Q:Measured the Difference cumulant every minute AV by oval wheel flow meter. Q=△Vt*60(Wmin) t-is the time required as the Volume change by AV Torque M:measured by Motor balance method.As shown in Figure 3-2 M=G*1(kgf"m) Rotational Speed:Measured by Mechanical tachometer 8.Answer the questions as follows (1)What is the role of relief valves in hydraulic system of laboratory Furniture (2)Why the throttle can make the tested pump loaded in hydraulic system of laboratory Furniture. (3)What is the difference between the rated flow rate and theoretical flow rate. (4)Where the main leakage of pump generate? (5)If the hydraulic pump has the best operating point?Why? (6)What is the loss of the hydraulic pump?Why it could be neglected in the calculation? 2 附件 24.4 12 Flow rate Q: Measured the Difference cumulant every minute △V by oval wheel flow meter. Q=△V/t*60（l/min） t—is the time required as the Volume change by △V Torque M: measured by Motor balance method. As shown in Figure 3-2 M=G*1(kgf*m) Rotational Speed: Measured by Mechanical tachometer 8. Answer the questions as follows (1) What is the role of relief valves in hydraulic system of laboratory Furniture. (2) Why the throttle can make the tested pump loaded in hydraulic system of laboratory Furniture. (3) What is the difference between the rated flow rate and theoretical flow rate. (4) Where the main leakage of pump generate? (5) If the hydraulic pump has the best operating point? Why? (6)What is the loss of the hydraulic pump? Why it could be neglected in the calculation?