SELF CHECK QUIZ - ROLLING PROCESS

Q1. Alligatoring is the defect arises in the process:

(a)  Extrusion   (b)  Rolling   (c)  Drawing   (d)  Punching



Q2. Which of the following is the smallest rolled product:

(a)  Ingot   (b)  Bloom   (c)  Billet   (d)  Slab



Q3. The velocity of ram used in simulation of rolling process is:

(a)   0.5 mm/sec, 1 mm/sec, 1.5 mm/sec
(b)   1 mm/sec, 1.5 mm/sec, 2 mm/sec
(c)   1 mm/sec, 2 mm/sec, 3 mm/sec
(d)   1 mm/sec, 5 mm/sec, 10 mm/sec



Q4. The material which is not used in simulation for rolling operation is:

(a)  Aluminium   (b)  Copper   (c)  Steel   (d)  Zinc



Q5. The direction of rotation of upper and lower rollers in roller operation is:

(a)  Same direction (b)  Opposite direction (c)  Both direction (d)  No direction



Q6. In order to get uniform thickness of plate by rolling process, one provides:

(a)  Chamber on rolls (b)  Hardening of the rolls (c)  Offset on the rolls (d)  Anti-friction bearing



Q7. The property of a material by which it can be rolled into sheets is called:

(a)  Elasticity (b)  Plasticity (c)  Ductility (d)  Malleability



Q8. Hot rolling of mild steel is carried out:

(a)   At Re-crystallisation Temperature
(b)   Between 100oC and 150oC
(c)   Above Re-crystallisation Remperature
(d)   Below Re-crystallisation Temperature



Q9. The number of steps involved in making a rod from a 100 mm 100 mm billet are:

(a)  1   (b)  4   (c)  6   (d)  10



Q10. In metals subjected to cold working, strain hardening effect is due to the mechanism of:

(a)  Slip   (b)  Twinning   (c)  Dislocation   (d)  Fracture