MCQ on extrusion for JE Exam

 

EXTRUSION PROCESS

Q1. Which country has maximum contribution in worldwide forging industry:

(a)  USA, Canada   (b)  Europe   (c)  China   (d)  India

Q2. The types of extrusion process involved in metal forming are:

(a)  4   (b)  1   (c)  3   (d)  5

Q3. Parameter which separate cold forming process from hot forming process is:

(a)   Re-crystallisation temperature
(b)   Melting point
(c)   Physical properties
(d)   Surface properties

Q4. How many types of presses are shown in extrusion process module:

(a)  10   (b)  1   (c)  3   (d)  5

Q5. The force acting on the work piece during extrusion operation is:

(a)  Compressive Force   (b)  Shear Force   (c)  Tensile Force   (d)  Spring Back Force

Q6. In simulation bench of extrusion process for aluminium, the velocity of ram used is:

(a)  1 mm/sec & 5 mm/sec   (b)  2 mm/sec & 3 mm/sec   (c)  5 mm/sec & 7 mm/sec   (d)  4 mm/sec & 5 mm/sec

Q7. The die angles used in the simulation of the extrusion process for aluminium are:

(a)  45^o, 60^o, 90^o   (b)  10^o, 45^o, 60^o   (c)  20^o, 40^o, 60^o   (d)  10^o, 20^o, 30^o

Q8. Metal extrusion process is generally used for producing:

(a)  Uniform solid section   (b)  Uniform hollow section   (c)  Both   (d)  None

Q9. For successive extrusion, the metal should be:

(a)  Ductile   (b)  Malleable   (c)  Plastic   (d)  Toug

Q10. The extrusion chamber, die and the ram are generally lubricated by:

(a)  Grease   (b)  Solid lubrican   (c)  Vegetable   (d)  Kerosene oil

Q11. Pipe dimensions are shown in figure, relation for 'l' is:

(a)     (b)     (c)     (d)  

Q12. If the D1 = 50mm, D2 = 45 mm, length (L) = 100 mm, r1 = 25 mm, r2 = 20 mm, l = ? :

(a)  211.2 mm   (b)  123 mm   (c)  232 mm   (d)  245 mm

Q13. If the D1 = 55mm, D2 = 50 mm, length (L) = 150 mm, r1= 30 mm, r2 = 20 mm, l = ? :

(a)  157.5 mm   (b)  134 mm   (c)  220 mm   (d)  435 mm

Q14. If the D1 = 55mm, D2 = 50 mm, length (L) = 150 mm, r1 = 30 mm, r2 = ?, l= 300 mm :

(a)  14.9 mm   (b)  21 mm   (c)  12 mm   (d)  23 mm

Q15. Solid billet and pipe dimensions are shown in figure, relation for 'l' is:

(a)              (b)   
(c)              (d)   

Q16. If the D1= 50 mm, length (L) = 100 mm, d1 = 25 mm, d2 = 20mm, l = ? :

(a)  1111 mm   (b)  1000 mm   (c)  900 mm   (d)  872 mm

Q17. If the D1 = 40 mm, length (L) = 100 mm, d1 = 20 mm, d2 = 10 mm, l = ? :

(a)  533 mm   (b)  545 mm   (c)  555 mm   (d)  562 mm

Q18. If the D1 = 30 mm, length (L) = 100 mm, d1 = 20 mm, d2 = ?, l = 600 mm :

(a)  11.5 mm   (b)  7.8 mm   (c)  10 mm   (d)  8 mm

Correct Answers
1	Europe	Europe
2	4	4
3	Re-crystallisation temperature	Re-crystallisation temperature
4	10	10
5	Compressive Force	Compressive Force
6	1 mm/sec & 5 mm/sec	1 mm/sec & 5 mm/sec
7	45o, 60o, 90o	45o, 60o, 90o
8	Both	Both
9	Plastic	Plastic
10	Vegetable	Vegetable
11
12	211.2 mm	211.2 mm
13	157.5 mm	157.5 mm
14	14.9 mm	14.9 mm
15
16	1111 mm	1111 mm
17	533 mm	533 mm
18	11.5 mm	11.5 mm