Are the following statements correct If not then correct the

Are the following statements correct? If not, then correct them. For a correct statement, write the word \"correct\" next to it. For incorrect statement write \"incorrect\" next to it and then correct the statement. The elastic modulus of the roll should be decreased to reduce flattening of the rolls under roll forces. Grain size will be larger in forged parts than cast parts. Taking larger reduction per pass is an economical decision in rolling process. Maximum wear in wire drawing die occurs at the exit of the die. In cogging operations on square billets, more friction yields to more spreading of material. Rolls made from carbide will cause more flattening of the roll than those made from hardened steel. In hydrostatic extrusion, use of a container liner is similar to the pads used in disk brake. For drawing short rods, dry drawing is desirable. Front tension and back tension help reduce the wear of rolls and increase the life of the rolls. Friction is undesirable in rod and wire drawing. Stretching provides good surface finish as rolling. In the forging process, if the sliding distance is low in a stroke, there are chances to reduce wear rate of dies. For extrusion processes, the smaller the land, the better the workpiece surface. n. In drawing process, a less ductile material will fail prematurely because of lack of strength. In rolling process, negative forward slip is possible only in the presence of a large back tension.

Solution

Solution A

Answer: incorrect

Flattening is elastic deformation of the roll and results in a larger contact length in the roll gap, Therefore , the elastic modulus of the roll should be increased

Solution B

Answer: incorrect

Grain size will be finer in forging operation compared to Casting

Solution c

Answer: Correct

Economically, it is always beneficial to reduce the number of operations involved in manufacturing of products. Reducing the number of passes in rolling achieves this result by lowering the number of required operations. This allows less production time to achieve the final thickness of the rolled product

Solution d

Answer: Correct