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MCQ - Mechanical TNPSC JTO
JTO - 534 - Advanced Computer Numerical Control - 534 - Unit IV Introduction CNC Machines

1)   

G90 represents:

A.
B.
C.
D.
Answer: B
2)   

Which code cancels the active canned cycle?

A.
B.
C.
D.
Answer: A
3)   

G04 is used for:

A.
B.
C.
D.
Answer: C
4)   

Which code is used to return the machine to home position?

A.
B.
C.
D.
Answer: C
5)   

Which M-code stops the spindle?

A.
B.
C.
D.
Answer: B
6)   

M08 is used to:

A.
B.
C.
D.
Answer: A
7)   

G81 is used for:

A.
B.
C.
D.
Answer: B
8)   

Which G-code is for peck drilling?

A.
B.
C.
D.
Answer: B
9)   

What color is typically used for the Emergency Stop button?

A.
B.
C.
D.
Answer: C
10)   

Which of the following is NOT a reason to use an emergency stop?

A.
B.
C.
D.
Answer: C
11)   

Tool offset is used to:

A.
B.
C.
D.
Answer: B
12)   

Which axis is usually associated with tool length offset?

A.
B.
C.
D.
Answer: C
13)   

Which of the following is NOT done using Jog Mode?

A.
B.
C.
D.
Answer: B
14)   

Jog mode is most helpful in which phase?

A.
B.
C.
D.
Answer: B
15)   

MDI commands are:

A.
B.
C.
D.
Answer: B
16)   

Which of the following can be executed in MDI mode?

A.
B.
C.
D.
Answer: A
17)   

Why is Single Block mode used?

A.
B.
C.
D.
Answer: B
18)   

What button is typically used to proceed to the next block in Single Block mode?

A.
B.
C.
D.
Answer: A
19)   

What is a similarity between MDI mode and Single Block mode?

A.
B.
C.
D.
Answer: B
20)   

Can Single Block mode be used with MDI?

A.
B.
C.
D.
Answer: B
21)   

If you want to test a drilling program line-by-line, which mode is preferred?

A.
B.
C.
D.
Answer: D
22)   

Which of the following is NOT possible in Edit Mode?

A.
B.
C.
D.
Answer: C
23)   

Before switching to Edit Mode, the machine must be:

A.
B.
C.
D.
Answer: C
24)   

Auto mode executes commands stored in:

A.
B.
C.
D.
Answer: C
25)   

In Auto Mode, the machine will:

A.
B.
C.
D.
Answer: C