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Manufacturing And Production Technology

Manufacturing And Production Technology
Low helix angle drills are preferred for drilling holes in

Copper
Carbon steel
Cast steel
Plastics

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Manufacturing And Production Technology
If a gas metal arc process uses a low arc voltage and the arc is continuously interrupted as the molten electrode metal fills up the arc gap is known as

ARC blow
ARC length
ARC
Short ARC

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Manufacturing And Production Technology
Crack in grinding wheel is developed due to

Low speed of wheel
High temperature developed at the contact of the wheel face and work
Grinding hard work
High speed of wheel

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Manufacturing And Production Technology
The correct sequence of tool materials in increasing order of their ability to retain their hot hardness is

Carbide, ceramic, cermet, borazon
Ceramic, carbide, borazon, cermet
Borazon, ceramic, carbide, cermet
Cermet, carbide, ceramic, borazon

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Manufacturing And Production Technology
Relief angles on high speed steel tools usually vary from

20° to 30°
3° to 10°
10° to 20°
0° to 3°

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Manufacturing And Production Technology
Which of the following statement is wrong about ultrasonic machining?

It cuts materials at very slow speeds
It is best suited for machining hard and brittle materials.
It removes large amount of material
It produces good surface finish

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