Question 1:
Calculate the design HP of a three-strand chain driven by an electric motor under smooth load conditions. Assume moderate temperature and dirty operating conditions with 18 hours of daily operation and a single-strand HP rating of 20.
Question 2:
A single-strand roller chain drive connects a 10-hp engine to a lawn waste chipper/shredder, as shown below. As the engine operates at 1200 rpm, the shredding teeth should rotate at 240 rpm. The drive sprocket has 18 teeth. Determine an appropriate pitch for the chain, the number of teeth on the driven sprocket, the pitch diameters of both sprockets, and the chain speed. Also indicate the number of links in a suitable chain and specify the required centre distance
Question 3:
The mass of a flywheel of an engine is 6.5 tons and the radius of gyration is 1.8 meters. It is found from the turning moment diagram that the fluctuation of energy is 56 kN-m. If the mean speed of the engine is 120 rpm, find the maximum and minimum speeds.