2. Air enters the compressor of a simple gas turbine at 14 psia, 520 R and a volumetric flow rate of 10,000 CFM (ft3/min). The isentropic efficiencies of the compressor and turbine are 83% and 87% respectively. The compressor pressure ratio is 14 and the temperature at the turbine inlet is 2500 R. Based on a air-standard analysis, calculate (a) the thermal efficiency, (b) the net power developed in HP, and (c) the rate of entropy production in the compressor and turbine, in hp/R.

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?

Different between boring and turning?

Calculate the angle of incidence of beam radiation on a surface located at glasgow (56°n, 4°w) at 10 a. m. on 1 february, if the surface is oriented 20° east of south and tilted at 40° to the horizontal