Multiple Choice
While machining cast iron generally cutting fluid is not required because
A) Cast iron surface is generally rough
B) The cast iron jobs revolves at low speeds
C) Cast iron contains graphite which does not allow temperatures to rise
D) Cast iron contains carbon which cools the job
E) None of the above
Correct Answer:

Verified
Correct Answer:
Verified
Q40: Weld spatter is<br>A)A flux<br>B)A filler material used
Q41: In all the following case chips produced
Q42: Necking is<br>A)Preparation of surface for brazing<br>B)Hole drilled
Q43: Cutting speeds for some materials are given
Q44: Trepanning operation is used for<br>A)Producing large holes<br>B)Under
Q45: In centreless grinding, work piece is clamped
Q46: The commonly used material for thermocouples is<br>A)Chromel-copper<br>B)Chromel-alumel<br>C)Platinum-rhodium<br>D)Any
Q48: The advantage of electronically operated automatic control
Q49: Straight fluted drills are used for<br>A)Amorphous materials<br>B)Ferrous
Q50: Mechanical seals are used<br>A)To prevent vibrations<br>B)To prevent