Presence of oxygen in copper
A) gives it yellow colour
B) generates blisters on the surface
C) makes it harder
D) Parting off
E) increases electrical conductivity
Correct Answer:
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Q12: While grinding the increase in wheel speed,
Q13: Which of the following chucking device can
Q14: The limitation of a pneumatically operated automatic
Q15: Unequal lengths of lips of a twist
Q16: A cutting tool fails due to
A)crater wear
Q18: Which of the following defect in castings
Q19: Flywheel is not provided in case of
A)manually
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Q21: Honing is used to
A)correct ovality
B)waviness of axis
C)non-parallelism
Q22: Which one of the following is not
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