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61
The soft grade grinding wheels are denoted by the letters
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Answer: Option A
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62
The operation performed on a shaper is
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Answer: Option D
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63
A push broach as compared to pull broach
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Answer: Option D
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64
The chuck used for setting up of heavy and irregular shaped work should be
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Answer: Option A
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65
The cutting speed for drilling aluminium, brass and bronze with carbon steel drills is _________ cutting speed for drilling mild steel with high speed steel drills.
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Answer: Option A
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66
The average cutting speed for turning brass with a high speed steel tool is
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Answer: Option C
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67
The average cutting speed for turning mild steel with a high speed steel tool is
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Answer: Option B
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68
The rake angle required to machine brass by high speed steel tool is
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Answer: Option A
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69
If the helix angle of the drill is made ________ 30°, then the torque required to drive the drill at a given feed will be more.
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Answer: Option B
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70
What is the type of shielding gas for GTAW (Gas Tungsten Arc Welding) used for carbon steels only called?
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Answer: Option B
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