A.What is the function of idlers in belt conveyors? B. Give the important factors on which the capacity of a belt conveyor depends. C. What type of materials are transported by screw conveyors? D....

the capacity of a belt conveyor depends. C. What type of materials are transported by screw conveyors? D. What are the different forms of spiral surfaces used in screw conveyors? E. Give the various advantages of screw conveyors. F. Give the important factors on which the capacity of screw conveyors depends.