Cold working produces the following effects 1. Stresses are set up in the material 2. Grain structure get distorted 3. Strength and hardness of the metal are increased 4. Surface finish is reduced

Cold working produces the following effects 1. Stresses are set up in

1.	Cold working produces the following effects 1. Stresses are set up in the material 2. Grain structure get distorted 3. Strength and hardness of the metal are increased 4. Surface finish is reduced
A.	1 and 2
B.	1, 2 and 3
C.	3 and 4
D.	1 and 4
Answer» B. 1, 2 and 3

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Cold working produces the following effects 1. Stresses are set up in the material 2. Grain structure get distorted 3. Strength and hardness of the metal are increased 4. Surface finish is reduced

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