Adouble reduction gearbox is required to transmit 5.5 kw from a shaft rotating at 2000 rpm. the desired output speed is approximately 350 rpm. draw this gear arrangement and select suitable gears for it.

Fluids at rest possess no flow energy. a)- true b)- false

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.

Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?