For welding non-ferrous metal like brass and bronze the most suitable flame is

47) The number of working strokes/min for a four stroke cycle engine is the speed of the engine RPM.

48) The difference between total depth and working depth in a gear tooth is

49) If net dynamic force acting on the shaft is equal to zero, then the balancing is called as

50) When the motion of the follower takes place at an axis away from the axis of the cam, the follower is called