Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by（）

A、permanent loss of pump suction

B、worn shaft seals

C、high level in the oil sump

D、low motor RPM

查看正确答案

更多“Leakage of hydraulic fluid from around the shaft of a hydraulic motor may be caused by（）”相关的问题

第1题

[单选题] Increased internal leakage, in addition to poor hydraulic system response,and inadequate lubrication, is the result of （）.

A、pump bearings in poor condition B、excessively worn actuator-piston packing C、broken directional control valve centering springs D、low hydraulic oil viscosity

点击查看答案

第2题

[] If a hydraulic pump is overheating, the cause may be （）.

A、A.excessive internal leakage in the pump B、B.low discharge pressure and fluid flow C、C.excessive fluid level in the hydraulic reservoir D、D.operation of the pump at 100% efficiency

点击查看答案

第3题

[] External and internal leakage in hydraulic systems may be caused by （）.

A、A.unusual vibration B、B.excessive worn parts C、C.abnormal pressure D、D.any of the above

点击查看答案

第4题

[单选题] In a shell-and-tube type hydraulic fluid cooler, the amount of heat transferred from the hydraulic fluid to the cooling water depends upon（）

A、the temperature of the hydraulic fluid B、the flow rate of the hydraulic fluid C、the temperature of the cooling water D、all of the above

点击查看答案

第5题

[单选题] Among the basic categories of equipment, which of the following are used to convert mechanical into hydraulic energy?（）

A、The hydraulic pumps B、Valves C、Hydraulic cylinders D、Hydraulic motors