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MCQ - TNPSC JTO

JTO - 534 - Advanced Computer Numerical Control

534 - Unit VI VMC Machines

1)   

Tool changing in VMC is done through:

A.
B.
C.
D.
Answer: C
2)   

G-code is used in VMC programming to:

A.
B.
C.
D.
Answer: B
3)   

The main difference between CNC turning center and VMC is:

A.
B.
C.
D.
Answer: C
4)   

The zero reference point in VMC is called:

A.
B.
C.
D.
Answer: A
5)   

What is the function of coolant in VMC operations?

A.
B.
C.
D.
Answer: B
6)   

In a VMC machine, fixtures are often mounted on:

A.
B.
C.
D.
Answer: C
7)   

A faceplate is used to hold workpieces in which machine?

A.
B.
C.
D.
Answer: B
8)   

Which of the following is NOT a holding device?

A.
B.
C.
D.
Answer: C
9)   

Mandrels are mainly used to hold:

A.
B.
C.
D.
Answer: C
10)   

The device used to clamp the workpiece vertically in milling is called:

A.
B.
C.
D.
Answer: B
11)   

The sub-spindle is also called as:

A.
B.
C.
D.
Answer: B
12)   

Dual spindle CNC machines reduce:

A.
B.
C.
D.
Answer: B
13)   

The tool turret in a Turn-Mill Centre can:

A.
B.
C.
D.
Answer: B
14)   

What is the benefit of Y-axis in Turn-Mill Centres?

A.
B.
C.
D.
Answer: B
15)   

Which of the following operations cannot be done on Turn-Mill Centre?

A.
B.
C.
D.
Answer: D
16)   

What does this command mean: M98 P2000 L3?

A.
B.
C.
D.
Answer: A