IOCL Junior Operator General Science MCQ Part-6 || IOCL Junior Operator General Science Questions and Answers11. What is "pinning" of a file?1 . Metal chips clogging between the file teeth. 2 . The file breaking. 3 . The file becoming dull. 4 . The file becoming dull. Answer and SolutionAnswer: "Metal chips clogging between the file teeth. "Pinning refers to the accumulation of metal filings between the file’s teeth. Discuss12. What is the primary consequence of file pinning?1 . The file cuts faster. 2 . Scratches on the workpiece 3 . Reduced cutting efficiency 4 . Both 2 and 3 Answer and SolutionAnswer: "Both 2 and 3 "Pinned files scratch the surface being worked on and don’t cut effectively. Discuss13. What tool is primarily used to remove pinning from a file?1 . A wire brush 2 . A file card 3 . A steel scraper 4 . Emery cloth Answer and SolutionAnswer: "A file card "A file card, also known as a file brush, is the correct tool for cleaning files. Discuss14. What material should be used to remove stubborn filings from a file?1 . Steel 2 . Aluminum 3 . Brass or copper 4 . Wood Answer and SolutionAnswer: "Brass or copper "Brass or copper strips are recommended because they are softer than the file teeth and less likely to cause damage. Discuss15. When does pinning of files tend to occur more frequently?1 . When using a coarse file. 2 . When using a very old file. 3 . When filing soft metals. 4 . When filing for a smooth finish. Answer and SolutionAnswer: "When filing for a smooth finish. "Finer files used for finishing, have smaller teeth more prone to clogging. Discuss16. Which of these instruments cannot directly measure angles?1 . Bevel protractor 2 . Bevel gauge 3 . Universal bevel gauge 4 . All of the above Answer and SolutionAnswer: "Bevel gauge "Bevel gauges are used to set angles, which then need to be measured with another instrument like a protractor. Discuss17. What is the primary function of a bevel gauge?1 . To set and transfer angles. 2 . To measure angles directly. 3 . To draw angles. 4 . To calculate angles. Answer and SolutionAnswer: "To set and transfer angles. "Bevel gauges are used to transfer an angle from one place to another, or to set a specific angle. Discuss18. What is the key difference between a bevel gauge and a universal bevel gauge?1 . The universal bevel gauge is more accurate. 2 . The bevel gauge can measure larger angles. 3 . The universal bevel gauge has an additional blade. 4 . The universal bevel gauge is made of different material. Answer and SolutionAnswer: "The universal bevel gauge has an additional blade. "Universal bevel gauge has an extra blade. The extra blade on a universal bevel gauge allows it to measure a wider range of angles. Discuss19. Which instrument is a direct angular measuring instrument?1 . Bevel gauge 2 . Bevel protractor 3 . Universal bevel gauge 4 . None of the above Answer and SolutionAnswer: "Bevel protractor "Bevel protractors have degree markings and can directly measure angles. Discuss20. What is the typical accuracy of a bevel protractor?1 . 0.1° 2 . 5° 3 . 10° 4 . 1° Answer and SolutionAnswer: "1° "Bevel protractors commonly measure angles to within one degree. Discuss12345
