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Manufacturing And Production Technology

Manufacturing And Production Technology
While current is shut down in the welding circuit, what kind of voltage exists between the output terminals of the welding machine?

GTAW
Kerf
Open air cut voltage
Gouging

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Manufacturing And Production Technology
A type of welding flows, which is the result of a perfect proportion and mixture of acetylene and oxygen and is used for fusion welding of steel and cast iron, is

Oxidizing flame
Neutral flame
Oxy-acetylene flame
Carburizing flame

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Manufacturing And Production Technology
For machining a mild steel workpiece by a high speed steel tool, the average cutting speed is

30 m/min
15 m/min
10 m/min
5 m/min

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Manufacturing And Production Technology
The factor which affects the tool life is

Cutting speed
All of these
Feed rate
Tool geometry

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Manufacturing And Production Technology
The hardness of a grinding wheel is determined by the

Ability of the bond to retain abrasives
Ability of the grinding wheel to penetrate the work piece
Hardness of the bond
Hardness of abrasive grains

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Manufacturing And Production Technology
Hot rolling of mild steel is carried out

Between recrystallization temperature
Between 100⁰C to 150⁰C
Above recrystallization temperature
At recrystallization temperature

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