Which of the following statements is/are true for cold working process?1. Cold working process does not provide good surface finish 2. Cold working process produces internal stress in a metal 3. Fatigue strength of metals can be improved 4. Cold working process cannot take place below recrystallization temperature

all the above statements are true

Which of the following statements is/are true for cold working process

1.	Which of the following statements is/are true for cold working process?1. Cold working process does not provide good surface finish 2. Cold working process produces internal stress in a metal 3. Fatigue strength of metals can be improved 4. Cold working process cannot take place below recrystallization temperature
A.	statement 1 and statement 2
B.	statement 2 and statement 3
C.	statement 3 and statement 4
D.	all the above statements are true
Answer» C. statement 3 and statement 4

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