Pitch Diameter and Drive Ratio. Pulleys and belts have two uses; to increase or reduce speed or torque, or to transfer power from one shaft to another. If the transfer of power is all you need, then two pulleys of the same diameter will do the trick.
Last night's Republican presidential debate drew an average of 22.9 million viewers for CNN, making it the most watched program in the network's 25-year history, the channel reported Thursday. The ratings were larger than the average NFL broadcast, at 19 million viewers, receives.
So exactly how many people watch the biggest game in American sports? Last year's Super Bowl drew the largest audience in American television history, averaging 111 million viewers. All total, 163 million people watched at least part of the game. That's more than half of the population.