176) The minimum number of teeth on the pinion which will mesh with any gear without interference for 20? full depth involute teeth will be

177) In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at

178) The coriolis component of acceleration leads the sliding velocity by

179) Which of the following is a spring controlled governor?

180) 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.