A shaft rotates at a speed of 1600 rpm with two gears which transfer a vertical load of F1= 2500lb andF2= 1000lb. The shaft is supported by bearings at both ends. Determine the minimum fatigue factor of safety in order to achieve infinite life. Assume the material is machined AISI 1040 CD steel.

Ahouse has the following electrical appliance usage (1) single 40w lamp used for 4 hours per day (2) single 60w fan used for 12 hours per day (3) single 200w refrigerator that runs 24 hours per day with compressor run 12 hours and off 12 hours find the solar power inverter size in watt with correction factor of 1.25.

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.

Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.