CNC TURNING CENTER ELEMENTS PROGRAMMING - Practice Mode

1) Which is the disadvantage of NC system?

Accuracy cannot be a change Increase compound rejection Skilled operator involves If tape is spoiled, entire program is affected

Correct Answer: If tape is spoiled, entire program is affected

2) Which guide way separate the surface contact between the sliding parts by a thin layer of fluid?

Flat guide way Vee guide way Hydrostatic guide way Dovetail guide way

Correct Answer: Hydrostatic guide way

3) When the machine moves 25.49 mm for the commond X = 25.50 mm, what must be the positional accuracy?

0.001 mm 0.01 mm 0.1 mm 1 mm

Correct Answer: 0.01 mm

4) What should be the safety precaution for holding the work piece to the lathe chuck?

Cleaned Measured Clamped securly Polished

Correct Answer: Clamped securly

5) Which part provides linear travel to the tool in CNC lathe?

Lead screw Ball screw Warm wheel Rack and Pinion

Correct Answer: Ball screw

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