Question 26
Source instructions: For multiple choice problems circle the right answers. Some problems may have more than one right answer. For essay problem, give explanation briefly.
At the contacting surfaces of moving parts of machine you usually found bearings (see figure to right). They look like small balls or cylinders made of steel. Sometimes lubricating oil is poured at the bearing locations. Explain the advantages of using those bearings and lubricating oil in machines.
At the contacting surfaces of moving parts of machine you usually found bearings (see figure to right). They look like small balls or cylinders made of steel. Sometimes lubricating oil is poured at the bearing locations. Explain the advantages of using those bearings and lubricating oil in machines.