Flux-cored arc welding is used to butt-weld two austenitic stainless steel plates together. Welding voltage = 20 volts, and current = 175 amps. The cross-sectional area of the weld seam = 45 mm2 , the heat transfer factor = 0.9, and the melting factor of the stainless steel = 0.60. Using tabular data and equations in this and the preceding chapter, determine the value for travel speed in the operation.

Asimple speed reducer is composed of 2 spur gears. the pinion gear has a pitch diameter of 0.75" and 36 teeth while the driven gear has a pitch diameter of 4.0" and 192 teeth. a)-what is the diametral pitch of each gear? b)-if an electric motor rotating ccw at 3000 rpm is coupled to the pinion, what is the rotational speed of the driven gear? c)-if the torque delivered to the pinion is 1 n-m, what is the torque on the driven gear? d)-what is the power transmitted by the gear train?