Design a full-wave bridge rectifier to supply 12v dc voltage to a resistive load of rl=3ω at the output, assuming an ac supply with 60 hz frequency with the following characteristics: a) unfiltered (without output capacitor) b) filtered. design a filter capacitor so that the ripple factor of the output voltage is less than %5. (you should revise the ac supply vm calculated in (a) to match the 12v requirement.)

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?