Question $4$:

Figure $1-3$ A drive is designed for a system to crush coal and delivers it by conveyor to a railroad car.

A drive is shown in Figure $1-3,$ which is designed for a system to crush coal and deliver it by conveyor to a railroad car. Gear A delivers $20+\frac{q}{100}kW$ to the crusher, and gear E delivers $10+\frac{q}{100}kW$ to the conveyor. All power enters the shaft through gear $C.$ The shaft carrying gears $A,C,$ and $E$ rotates at $500+\frac{q}{100}rpm.$ The distance from the middle of each bearing to the middle of the face of the nearest gear is $127+\frac{q}{1000}mm.$ As a design engineer, you are required to design that shaft using AISI $4140$ OQT$1000.$ You can neglect the weight of the elements on the shafts.

q$=329$