RC800 review questions with correct answers

how do you prevent corrosion in a jack unit that is installed long before the elevator is? CORRECT ANSWER fill the cylinder with oil to protect the plunger from corrosion what device prevents the plunger from leaving the jack assembly? CORRECT ANSWER the stop ring why is it important to use a series of short welds on opposite sides of the cylinder when welding? CORRECT ANSWER to prevent warping or dog legging in the cylinder what are the channels called that support the platform of a hydraulic elevator? CORRECT ANSWER the bolster channels what is the advantage of Wye-delta starting? CORRECT ANSWER reduced current starting is accomplished without the need for resistors pressure in a hydraulic system is measured in? CORRECT ANSWER pounds per square inch the area of the plunger is measured in? CORRECT ANSWER square inches the radius of a circle is ________________ the diameter? CORRECT ANSWER one-half when the elevator is at rest, it is held in position by a __________ ? CORRECT ANSWER check valve