Multiple Choice
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:
Verified
Correct Answer:
Verified
Q16: Low helix drills are used for machining<br>A)Brass<br>B)bronze<br>C)bakelite<br>D)Any
Q17: Unequal lengths of lips of a twist
Q18: Accuracy is<br>A)The repeatability of a measuring process<br>B)Error
Q19: For resistance welding<br>A)Voltage is low and current
Q20: In a Brinell hardness test the hardness
Q22: Which of the following defect in castings
Q23: Aluminium gears are generally used in<br>A)Compressors<br>B)Speed reducers<br>C)Instruments<br>D)Worm
Q24: The disadvantage of die casting process is<br>A)Cost
Q25: The limitation of a pneumatically operated automatic
Q26: In EDM, the tool and work piece