201. Which of the following statement is correct for gears ?
202. In a screw jack, the effort required to lift the load W is given by (where α = Helix angle, and φ = Angle of friction)
203. In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at
204. The coriolis component of acceleration leads the sliding velocity by
205. The length of a simple pendulum which gives the same frequency as the compound pendulum, is
206. Which of the following is a spring controlled governor?
207. The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the right. The effect of gyroscopic couple on the aeroplane will be to dip the nose and raise the tail.
208. At the nodal point in a shaft, the amplitude for torsional vibration will be
209. When a body is subjected to transverse vibrations, the stress induced in a body will be
210. The magnitude of linear velocity of a point B on a link AB relative to point A is (where ω = Angular velocity of the link AB)
211. A slender shaft supported on two bearings at its ends carries a disc with an eccentricity e from the axis of rotation. The critical speed of the shaft is Nc. If the disc is replaced by a second one of same mass but mounted with an eccentricily 2 e, then the critical speed of the shaft in the second case is
212. The mechanism in which two are turning pairs and two are sliding pairs, is called a
213. In a multiple V-belt drive, all the belts should stretch at the same rate.
214. In a reciprocating engine, usually __________ of the reciprocating masses are balanced.
215. The first Hydrogen bomb is tested by the United states in .........?
216. Where is the headquarters of World Council of Churches (WCC)?
217. When there is a reduction in amplitude over every cycle of vibration, then the body is said to have
218. In full depth involute system, the smallest number of teeth in a pinion which meshes with rack without interference is
219. In a disc clutch, if there are n1 number of discs on the driving shaft and n2 number of discs on the driven shaft, then the number of pairs of contact surfaces will be
220. Seeing is ..........?
221. The effect of swaying couple in a locomotive is resisted by the side pressure between the flanges of the tyres of the wheel and the inside of the rails.
222. The Klein's diagram is useful to find
223. The equation of motion for a single degree of freedom system with viscous damping is . The damping ratio of the system is
224. The ratio of the number of teeth to the pitch circle diameter in millimetres, is called
225. The ratio of the pitch circle diameter in millimetres to the number of teeth, is called circular pitch.