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MCQ - Mechanical TNPSC JTO
JTO - 538 - Industrial Robotics and Digital Manufacturing - 538 - Preventive Maintenance and Basic Trouble Shooting

176)   

If robot arc is unstable, first check:

A.
B.
C.
D.
Answer: A
177)   

Which common electrical issue causes robot malfunction?

A.
B.
C.
D.
Answer: A
178)   

In troubleshooting, error codes displayed on the teach pendant help to:

A.
B.
C.
D.
Answer: A
179)   

Which maintenance step reduces false alarms from sensors?

A.
B.
C.
D.
Answer: A
180)   

Basic troubleshooting in robots should always be done:

A.
B.
C.
D.
Answer: B
181)   

A robotic welding cell frequently shows “low gas flow” alarm. What should be checked first?

A.
B.
C.
D.
Answer: B
182)   

Which part of the preventive maintenance plan ensures uninterrupted welding operations?

A.
B.
C.
D.
Answer: B
183)   

A weld shows excessive porosity. Which preventive maintenance task was likely missed?

A.
B.
C.
D.
Answer: C
184)   

Which case indicates immediate troubleshooting rather than scheduled maintenance?

A.
B.
C.
D.
Answer: B
185)   

A technician finds loose connections in welding power cables. This may cause:

A.
B.
C.
D.
Answer: B
186)   

In a case study, a robot stopped mid-cycle due to E-stop activation. Likely cause?

A.
B.
C.
D.
Answer: A
187)   

Preventive maintenance checklists usually include:

A.
B.
C.
D.
Answer: D
188)   

If welding arc length fluctuates, preventive maintenance should focus on:

A.
B.
C.
D.
Answer: D
189)   

A robot shows repeated overload alarms. Which step should be checked first?

A.
B.
C.
D.
Answer: A
190)   

Which tool is most suitable for verifying torque applied on robot arm bolts?

A.
B.
C.
D.
Answer: B
191)   

What should be done if a sensor shows false positives?

A.
B.
C.
D.
Answer: B
192)   

Preventive maintenance reduces troubleshooting frequency because:

A.
B.
C.
D.
Answer: B
193)   

A blocked welding nozzle is most likely to cause:

A.
B.
C.
D.
Answer: B
194)   

If robot wire feeding becomes inconsistent, the first maintenance check is:

A.
B.
C.
D.
Answer: A
195)   

Which practice ensures maximum life of welding torches?

A.
B.
C.
D.
Answer: B
196)   

Which safety device must always be tested after preventive maintenance?

A.
B.
C.
D.
Answer: B
197)   

What is the correct sequence in troubleshooting a robot alarm?

A.
B.
C.
D.
Answer: A
198)   

Preventive maintenance record logs are important because they:

A.
B.
C.
D.
Answer: B
199)   

A robot cell shows weld quality deterioration despite normal parameters. The root cause could be:

A.
B.
C.
D.
Answer: A
200)   

The ultimate goal of preventive maintenance and troubleshooting in robotics is:

A.
B.
C.
D.
Answer: B