Imagine you were hired by an insurance company to determine the agma rating of a pinion in a failed gearbox. the pinion is cut to a pressure angle of 20°, has 17 teeth and its module is 12 mm. the operating speed is 2000 rpm. your calculations reveal that, for this pinion material, bending failure should be expected if the tangential force exceeds 4200 n and pitting failure should be expected if the tangential force exceed 3529 n. what should your report to your customer say about the maximum power that can be transmitted under these conditions without including a factor of safety? (a)24 kw (b) 75 kw (c) 119 kw (d) 48 kw

Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

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.

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false