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

76)   

Which type of tool is required to cut an Acme thread?

A.
B.
C.
D.
Answer: C
77)   

For threading operations, improper pitch setting will cause:

A.
B.
C.
D.
Answer: D
78)   

In threading, the term minor diameter refers to:

A.
B.
C.
D.
Answer: B
79)   

Face grooving is done on:

A.
B.
C.
D.
Answer: B
80)   

What kind of tool failure is common in parting without coolant?

A.
B.
C.
D.
Answer: C
81)   

What is the purpose of using G17, G18, or G19 in circular interpolation?

A.
B.
C.
D.
Answer: C
82)   

In command G03 X10 Y10 R5, the tool draws:

A.
B.
C.
D.
Answer: B
83)   

What is the result if radius R value is too large for the arc endpoint?

A.
B.
C.
D.
Answer: B
84)   

Which parameter in the circular interpolation command defines the feed rate?

A.
B.
C.
D.
Answer: D
85)   

What happens if I and J are both zero in a G02/G03 command?

A.
B.
C.
D.
Answer: C
86)   

In CNC circular interpolation, which axis is not used in 2D arcs in XY plane?

A.
B.
C.
D.
Answer: C
87)   

When executing G01 Z–5 F100, the tool moves:

A.
B.
C.
D.
Answer: B
88)   

Feedrate in G01 controls:

A.
B.
C.
D.
Answer: C
89)   

Jog movement is commonly performed using:

A.
B.
C.
D.
Answer: C
90)   

In Jog mode, the machine does not follow:

A.
B.
C.
D.
Answer: D
91)   

Which axis is not typically found in a 3-axis CNC milling machine?

A.
B.
C.
D.
Answer: D
92)   

What does G28 typically do in CNC programming?

A.
B.
C.
D.
Answer: B
93)   

What should you always ensure before using G00?

A.
B.
C.
D.
Answer: B
94)   

G00 and G01 are examples of:

A.
B.
C.
D.
Answer: B
95)   

In MPG mode, which component is used to control movement?

A.
B.
C.
D.
Answer: C
96)   

MPG mode allows movement in increments such as:

A.
B.
C.
D.
Answer: B
97)   

Single Block is useful to:

A.
B.
C.
D.
Answer: C
98)   

Which of the following actions happens in Auto Mode?

A.
B.
C.
D.
Answer: C
99)   

Before using Auto Mode, the operator should:

A.
B.
C.
D.
Answer: C
100)   

Which mode should be used for safety when checking a new CNC program?

A.
B.
C.
D.
Answer: B