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Initiation to mechanic

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Chapter 4 - Quiz

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1. Which of the following is NOT a type of mechanical risk?
Risk of injury Operator can be a victim of crushing Serious accidents Development of exceptional skills
2. Why is it essential to check the fastenings of mechanical components?
To reduce energy consumption and save money To avoid excessive vibrations and prevent the risk of accidents To increase the supported load and improve productivity To improve aesthetics
3. What is one of the main factors of accidents related to machinery?
Using a machine unsuitable for the work to be done Regular maintenance Appropriate lubrication Use in accordance with recommendations
4. Which step is NOT part of the problem identification strategy?
Physical inspection Observation of symptoms Data analysis Replacing the old machine
5. What is the main cause of excessive vibration in a mechanical system?
Correct alignment of components An electrical overload An imbalance of rotating parts Excessive lubrication
6. What is the primary role of lubricant in a mechanical system?
Reduce wear and friction Increase the temperature of components Decrease the rotation speed Increase corrosion
7. What element can cause misalignment of mechanical shafts?
Using a frequency exceeding 50Hz Improper installation of the machine Excessive lubrication of a pump A low ambient temperature
8. Why is it important to check the condition of belts in a mechanical system?
To increase the temperature To avoid inefficient power transmission To accelerate the speed of components To reduce lubricant wear
9. Why is the 5 Whys method effective for solving mechanical problems?
Because it helps identify root causes Because it eliminates the need for visual inspections Because it allows for increasing machine speed Because it simplifies maintenance
10. Why does a poorly designed machine present an increased danger?
Because it works faster Because it has higher energy consumption Because it increases the risk of accidents Because it is more expensive