Mechanical Fitter cum welder Interview Online Test
Mechanical Fitter cum Welder technical interview questions and answers help candidates prepare for industrial maintenance, fabrication, and mechanical assembly roles. Interviewers in factories, workshops, engineering plants, and even technical support units of companies like TCS, Wipro, and industrial contractors evaluate your skills in welding techniques, mechanical fitting, blueprint reading, machine maintenance, and safety procedures. They also assess your understanding of tools, measurement instruments, material handling, and troubleshooting of mechanical faults.
For freshers and experienced professionals, preparing these technical interview Q&A helps build confidence and clarity while explaining practical experience and technical skills. This guide contains important interview questions commonly asked in manufacturing and fabrication industries, helping you perform well in placement tests, skill-based interviews, and trade-level assessments.
Mechanical professionals can diversify their skills by exploring machine operator roles or preparing for firefighter positions in industrial settings
1. What is the role of a mechanical fitter
Answer: A mechanical fitter assembles and repairs machinery and equipment.
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2. What is a welding machine used for
Answer: A welding machine is used to join metal parts together by melting them.
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3. Describe the basic steps of welding
Answer: The basic steps of welding include cleaning the metal, setting up the machine, welding the pieces, and inspecting the weld.
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4. What safety gear is needed for welding
Answer: Safety gear includes a welding helmet, gloves, and protective clothing to prevent burns and injury.
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5. How do you ensure a good weld
Answer: To ensure a good weld, clean the metal surfaces, use the correct settings on the machine, and weld steadily.
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6. What is a mechanical blueprint
Answer: A mechanical blueprint is a detailed drawing that shows how parts of a machine or structure fit together.
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7. What tools are commonly used by a mechanical fitter
Answer: Common tools include wrenches, screwdrivers, and measuring instruments.
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8. How do you measure and cut metal
Answer: To measure and cut metal, use a ruler or tape measure to mark the metal, then use a cutting tool like a saw or grinder.
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9. What is the purpose of a gasket
Answer: A gasket seals the joint between two parts to prevent leaks.
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10. How do you maintain welding equipment
Answer: Maintain welding equipment by cleaning it regularly, checking for wear, and replacing parts as needed.
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11. What is MIG welding
Answer: MIG welding is a type of welding that uses a wire electrode and gas to join metals together.
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12. Explain the difference between MIG and TIG welding
Answer: MIG welding uses a wire feed and gas, while TIG welding uses a tungsten electrode and requires more manual skill.
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13. What should you check before starting a welding job
Answer: Before starting, check that the equipment is set up correctly, the area is clean, and you have the right materials.
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14. How do you fix a leak in a pipe
Answer: To fix a leak, locate the leak, clean the area, apply a sealant or weld the joint, and test to ensure it is fixed.
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15. What is a weld bead
Answer: A weld bead is the line of weld metal that forms when welding two pieces of metal together.
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16. How do you read a mechanical drawing
Answer: Read a mechanical drawing by identifying the symbols, measurements, and parts shown in the drawing.
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17. What is the importance of using the correct welding rod
Answer: Using the correct welding rod ensures strong welds and compatibility with the materials being joined.
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18. Describe a time when you solved a mechanical problem
Answer: I solved a mechanical problem by diagnosing the issue, finding the right solution, and fixing the equipment.
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19. What is a welding joint
Answer: A welding joint is the area where two pieces of metal are joined together by welding.
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20. How do you ensure the quality of a weld
Answer: Ensure weld quality by using proper techniques, checking the weld visually, and testing for strength.
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21. What is the purpose of a welding helmet
Answer: A welding helmet protects your eyes and face from the bright light and heat generated during welding.
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22. How do you handle heavy machinery
Answer: Handle heavy machinery carefully by following safety protocols, using lifting equipment, and getting help if needed.
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23. What is the function of a welding torch
Answer: A welding torch provides the heat needed to melt the metal during welding.
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24. Explain the use of a measuring tape in mechanical fitting
Answer: A measuring tape is used to measure lengths and dimensions accurately to ensure parts fit together correctly.
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25. How do you align machine parts
Answer: Align machine parts by measuring and adjusting them until they are properly aligned according to the specifications.
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26. What is the purpose of using clamps in mechanical fitting
Answer: Clamps hold parts in place while they are being assembled or welded.
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