303) In a journal bearing, the load on the bearing is __________ to the axis of the journal.

304) An imaginary circle which by pure rolling action gives the same motion as the actual gear, is called

305) When the frictional force helps to apply the brake, then the brake is said to be self-energizing brake.

306) Multiple threads are used to secure

307) The fatigue limit of a material is greatly decreased by poor surface conditions.