In drawing operation, proper lubrication is essential for which of the following reasons. 1. To improve die life 2. To reduce drawing forces 3. To reduce temperature 4. To improve surface finish Select the correct answer using the code given below:

In drawing operation, proper lubrication is essential for which of the

1.	In drawing operation, proper lubrication is essential for which of the following reasons. 1. To improve die life 2. To reduce drawing forces 3. To reduce temperature 4. To improve surface finish Select the correct answer using the code given below:
A.	1 and 2 only
B.	1, 3 and 4 only
C.	3 and 4 only
D.	1, 2, 3 and 4
Answer» E.

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In drawing operation, proper lubrication is essential for which of the following reasons. 1. To improve die life 2. To reduce drawing forces 3. To reduce temperature 4. To improve surface finish Select the correct answer using the code given below:

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