o3-50.3-51.Items 3–50 through 3–52 are basedon figure 3C.Which of the following types ofbearing is often used in thehousing to provide free movement inthe direction indicated by arrow C?1.Thrust bearing2.Journal bearing3.Reciprocal motion bearing4.Tapered roller bearingA radial ball bearing used in thehousing is superior to a journalbearing for1.2.3.4.reduction of friction underheavy twisting stress asindicated by arrow Aabsorption of stress asindicated by arrow Bprevention of shaft motion asindicated by arrow Creduction of friction duringhigh–speed rotation of theshaft as indicated by arrow D3–52.What type of bearing is designed topermit free rotation of the shaftwhile restraining motion in thedirection indicated by arrow C?1.Radial ball bearing2.Needle roller bearing3.Thrust bearing4.Journal bearing3–53.The two hardened steel rings of aball bearing assembly are calledthe1.rollers2.races3.separators4.shoulders3–54.The spring in the mechanism shownin figure 3D is used to1.store energy for part of afunctioning cycle2.force a component to engaugeanother component3.return a component to neutralposition after displacement4.counterbalance a weight orthrust29
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business