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MCQ - Mechanical TNPSC JTO
JTO - 534 - Advanced Computer Numerical Control - 534 - Unit VI VMC Machines

51)   

Which canned cycle includes dwell at bottom of hole?

A.
B.
C.
D.
Answer: B
52)   

What is the benefit of using canned cycles?

A.
B.
C.
D.
Answer: B
53)   

 G89 is used for:

A.
B.
C.
D.
Answer: B
54)   

In a canned cycle, "R" indicates:

A.
B.
C.
D.
Answer: C
55)   

Which command ends the canned cycle?

A.
B.
C.
D.
Answer: A
56)   

Which sensor helps confirm tool presence in ATC?

A.
B.
C.
D.
Answer: A
57)   

Tool clamping and unclamping is usually done using:

A.
B.
C.
D.
Answer: C
58)   

What is the role of the spindle orientation in ATC?

A.
B.
C.
D.
Answer: B
59)   

What happens if the selected tool is not in the correct magazine pocket?

A.
B.
C.
D.
Answer: C
60)   

Which part of ATC stores tool data like tool number and offset?

A.
B.
C.
D.
Answer: A
61)   

How does a CNC controller apply wear offset during machining?

A.
B.
C.
D.
Answer: B
62)   

G41 and G42 codes are associated with:

A.
B.
C.
D.
Answer: B
63)   

Tool wear offset is preferred over reprogramming because:

A.
B.
C.
D.
Answer: C
64)   

Tool wear is monitored manually or by:

A.
B.
C.
D.
Answer: B
65)   

What happens if tool wear offset is not applied properly?

A.
B.
C.
D.
Answer: C
66)   

Which axis is perpendicular to the VMC table?

A.
B.
C.
D.
Answer: C
67)   

What is the typical location of Machine Home Position?

A.
B.
C.
D.
Answer: C
68)   

The term “Work Offset” in CNC VMC refers to:

A.
B.
C.
D.
Answer: C
69)   

If the G90 is active, and the code is G01 X50 Y25, the tool will move:

A.
B.
C.
D.
Answer: B
70)   

Which code is used to cancel tool length compensation?

A.
B.
C.
D.
Answer: C
71)   

Subprograms are stored:

A.
B.
C.
D.
Answer: B
72)   

If the main program has M98 P500 L2, how many times will O500 be executed?

A.
B.
C.
D.
Answer: B
73)   

When using subprograms, the main program is referred to as:

A.
B.
C.
D.
Answer: C
74)   

The difference between M98 and M99 is:

A.
B.
C.
D.
Answer: C
75)   

Can a subprogram include tool movements like G01, G02, etc.?

A.
B.
C.
D.
Answer: B