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Machinist
CNC TURNING CENTER ELEMENTS PROGRAMMING
Set 5
Set 5
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Q7968
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Which is the disadvantage of NC system?
A
Accuracy cannot be a change
B
Increase compound rejection
C
Skilled operator involves
D
If tape is spoiled, entire program is affected
Q7969
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Which guide way separate the surface contact between the sliding parts by a thin layer of fluid?
A
Flat guide way
B
Vee guide way
C
Hydrostatic guide way
D
Dovetail guide way
Q7970
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When the machine moves 25.49 mm for the commond X = 25.50 mm, what must be the positional accuracy?
A
0.001 mm
B
0.01 mm
C
0.1 mm
D
1 mm
Q7971
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What should be the safety precaution for holding the work piece to the lathe chuck?
A
Cleaned
B
Measured
C
Clamped securly
D
Polished
Q7972
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Which part provides linear travel to the tool in CNC lathe?
A
Lead screw
B
Ball screw
C
Warm wheel
D
Rack and Pinion
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