MCQ - Mechanical TNPSC JTO
JTO - 534 - Advanced Computer Numerical Control - 534 - Unit VIII VMC G Code
Which CNC function allows repeating a shape at multiple angular positions (like on rotary table)?
When you scale a shape by 0.5 using G51, the resulting part will be:
What is the usual file format used for CNC/VMC programs when exported?
What is DNC (Direct Numerical Control) in CNC programming?
Which of the following is a commonly used medium for importing/exporting CNC programs?
Before exporting a program from CNC machine to PC, you must:
While milling a hexagon using polar coordinates, how many angle steps are needed?
A tool moves radially outward at 60°, then returns and rotates 60° further — this sequence is repeated for:
Which CNC code is typically required before using G16 (polar mode)?
What is the total cycle time for a part if:
- Roughing time = 2.5 min
- Finishing time = 1.0 min
- Loading/unloading time = 0.5 min
Which of the following should be disabled during dry run?
Which machine control button is usually pressed to activate dry run?
Which parameter compensates for variation in tool height?
In circular interpolation, which of the following defines center point using vector values?
For clockwise arc movement on the XY plane using I and J, the syntax is typically:
Which G-code is used to cancel circular interpolation mode?
In Incremental Programming (G91), the coordinates are measured from:
Which of the following represents a proper sequence in a simple G00/G01 part program?
How can an operator verify that G01 movement occurred correctly?