86151. The wear load should be __________ the dynamic load.
86152. Antifriction bearings are
86153. Stress concentration factor is defined as the ratio of
86154. The property of a bearing material which has the ability to accomodate shaft deflections and bearing inaccuracies by plastic deformation without excessive wear and heating, is known as
86155. In the levers of __________ type, the mechanical advantage is less than one.
86156. A hollow saddle key is
86157. A special case of ductility which permits materials to be rolled or hammered into thin sheets, is called
86158. Crowning on pulley helps
86159. The effect of key ways on a shaft is to reduce its load carrying capacity and to increase its torsional rigidity.
86160. The efficiency of a riveted joint is equal to
86161. Which of the following welded joint is designed for shear strength ?
86162. In designing a connecting rod, it is considered like __________ for buckling about X-axis.
86163. The material commonly used for crane hooks is
86164. The eye bolts are used for
86165. The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to
86166. According to Rankine's theory, the failure occurs at a point in a member
86167. The dedendum is the radial distance from the
86168. In a steam engine, the valve rod is connected to an eccentric rod by means of
86169. In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called
86170. When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is
86171. The lead angle of a worm is 22.5°. Its helix angle will be
86172. The root angle of a bevel gear is equal to
86173. The property of a bearing material which has the ability to accomodate small particles of dust, grit etc. without scoring the material of the journal, is called
86174. The shock resistance of steel is increased by adding
86175. A flange coupling is a type of rigid coupling.
86176. The strength of the un-riveted plate (P) per pitch length is equal to
86177. Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be
86178. Wahl's stress factor __________ very rapidly as the spring index decreases.
86179. For circumferential joint in boilers, the type of joint used is
86180. In cyclic loading, stress concentration is more serious in
86181. For a square key made of mild steel, the shear and crushing strength are related as
86182. In a bolt, the plane of shear should be across the threaded portion of the shank.
86183. When a metal or alloy is cold worked,
86184. A leaf spring in automobiles is used
86185. According to I.B.R., the factor of safety of riveted joint should not be less than
86186. Two rigid plates are clamped by means of bolt and nut with an initial force F. After tightening, a separating force P (P < F) is applied to the lower plate, which in turn acts on the nut. The tension in the both after this is
86187. The bearings of medium series have capacity __________ over the light series.
86188. The antifriction bearings
86189. In a partial journal bearing, the angle of contact of the bearing with the journal is
86190. A shaft coupling should
86191. In the levers of first type, the mechanical advantage is __________ one.
86192. The load placed at the top of the screw in a mechanical screw jack is prevented from rotation by providing a swivelling mechanism.
86193. The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)
86194. The shear stress at a point in a shaft subjected to a torque is
86195. Two concentric helical springs used to provide greater spring force are wound is opposite direction.
86196. If the centre distance of the mating gears having involute teeth is increased, then the pressure angle
86197. In cylindrical cams, the follower moves
86198. The included angle for the acme thread is 29°.
86199. The process extensively used for making bolts and nuts is
86200. In a transverse fillet welded joint, the size of weld is __________ the throat of weld.
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