Which of the following process uses non-consumable electrodes ?

46) In a double acting reciprocating compressor the suction, compression, delivery of air takes place on

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