183) The mechanism in which two are turning pairs and two are sliding pairs, is called

184) In a multiple V-belt drive, all the belts should stretch at the same rate.

185) In a reciprocating engine, usually __________ of the reciprocating masses are balanced.

186) When there is a reduction in amplitude over every cycle of vibration, then the body is said to have

187) In full depth 14.5 Degree involute system, the smallest number of teeth in a pinion which meshes with rack without interference is