INTRODUCTION TO CNC - Practice Mode

1) How the minimum three axes are named in CNC machines?

Axes of X,Y, and Z Axes of A,B and C Axes of P,Q and R Axes of I,J and K

Correct Answer: Axes of X,Y, and Z

2) What do you mean by HMC axis convention of CNC machines?

Horizontal Marking Centre Horizontal Machining Centre Horizontal Measuring Centre Horizontal Machining Contour

Correct Answer: Horizontal Machining Centre

3) Which one of the direction shown by thumb finger in right hand coordinate system?

Direction of spindle rotation Direction of X axis Direction of Y axis Direction of Z axis

Correct Answer: Direction of X axis

4) What do you mean by coordinate system?

The coordinate system is a two dimensional number line It is only the direction of spindle rotation The cutting tool has to move in longitudinal direction The work table has to move radial for 180 degrees

Correct Answer: The coordinate system is a two dimensional number line

5) What involves to produce component on conventional lathe?

Involves more manual work More production rate Less manual work Computer takes care

Correct Answer: Involves more manual work

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