Which option distinguishes the step in the engineering design phase described in the following scenario? Dave designs hockey equipment. He learns that another company, Cascade, uses Seven Technology, a linear system that absorbs maximum energy, to develop safer, stronger hockey helmets.

write engineering requirements

evaluate the competition

collect benchmarking information

identify customer needs

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Inspection for bearing condition will include: (clo4) a)-color b)-smell c)-size d)-none of the above

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?