227. A flange coupling is a type of rigid coupling.
228. The strength of the un-riveted plate (P) per pitch length is equal to
229. 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
230. Wahl's stress factor __________ very rapidly as the spring index decreases.
231. For circumferential joint in boilers, the type of joint used is
232. In cyclic loading, stress concentration is more serious in
233. For a square key made of mild steel, the shear and crushing strength are related as
234. The Quit India Movement started at?
235. In a bolt, the plane of shear should be across the threaded portion of the shank.
236. When a metal or alloy is cold worked,
237. A leaf spring in automobiles is used
238. According to I.B.R., the factor of safety of riveted joint should not be less than
239. 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
240. The bearings of medium series have capacity __________ over the light series.
241. The antifriction bearings
242. In a partial journal bearing, the angle of contact of the bearing with the journal is
243. A shaft coupling should
244. In the levers of first type, the mechanical advantage is __________ one.
245. The load placed at the top of the screw in a mechanical screw jack is prevented from rotation by providing a swivelling mechanism.
246. The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)
247. The shear stress at a point in a shaft subjected to a torque is
248. Two concentric helical springs used to provide greater spring force are wound is opposite direction.
249. If the centre distance of the mating gears having involute teeth is increased, then the pressure angle