MSSC MAINTENANCE QUESTIONS WITH CORRECT ANSWERS

Schematic symbol for N.O.H.C.(Normally Open Held Closed)


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N.O.H.C. symbol




A circuit breaker keeps tripping. You disconnect a motor and it continues to trip. What
should you do?


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, Replace the circuit breaker and re-test.




Goal of TPM


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Zero Breakdowns




You are performing PM on a piece of equipment. You need to use a circuit tester to
check for what type of electricity?


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AC or DC




Pneumatic systems use regulators to


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Provide constant air pressure




When considering shutdown of a machine to fix it or there is a run to fail, what
factor(s) do you need to consider?


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, The safety of personnel and the performance of the equipment.




A pump may cavitate when


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The suction line pressure is too low.




Why is a workstation designed to minimize motion?


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to reduce competitive stress injuries.




When performing internal audits, it is important that


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auditors are unbiased (objective, neutral)




Why is keeping records of daily maintenance important?


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