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MCQ - TNPSC JTO

JTO - 534 - Advanced Computer Numerical Control

534 - Unit VII Routine Maintenance

49)   

OEM preventive maintenance logbook is used to:

A.
B.
C.
D.
50)   

Which maintenance action helps prevent backlash in CNC lathes?

A.
B.
C.
D.
51)   

Excessive vibration during CNC lathe operation can be due to:

A.
B.
C.
D.
52)   

What does a regularly blinking spindle drive alarm indicate in a CNC lathe?

A.
B.
C.
D.
53)   

What is the function of the machine’s automatic lubrication system?

A.
B.
C.
D.
54)   

What is the common cause for inaccurate part dimension after multiple cuts?

A.
B.
C.
D.
55)   

Why is the air blast system important in CNC VMC spindle nose?

A.
B.
C.
D.
56)   

Which of the following must be checked while inspecting ATC in a VMC?

A.
B.
C.
D.
57)   

In CNC VMC, excessive Z-axis backlash will cause

A.
B.
C.
D.
58)   

What does a CNC machine alarm for “Emergency Stop” typically indicate?

A.
B.
C.
D.
59)   

Which of the following is NOT part of a CNC VMC’s preventive maintenance schedule?

A.
B.
C.
D.
60)   

OEM-specified spindle warm-up programs are most important during:

A.
B.
C.
D.
61)   

OEM suggests tool change cycle testing to identify:

A.
B.
C.
D.
62)   

OEM battery backup ensures:

A.
B.
C.
D.
63)   

Which of the following is not part of OEM routine maintenance for VMC?

A.
B.
C.
D.
64)   

OEM recommends using an earth leakage circuit breaker (ELCB) for:

A.
B.
C.
D.