IOCL Junior Operator General Science MCQ Part-6 || IOCL Junior Operator General Science Questions and Answers21. What is the range of graduations on a standard bevel protractor?1 . 0° to 90° 2 . 0° to 360° 3 . 0° to 180° 4 . -90° to +90° Answer and SolutionAnswer: "0° to 180° "Bevel protractors typically have markings from 0 to 180 degrees. Discuss22. How many main types of surface gauges are there?1 . One 2 . Two 3 . Three 4 . Four Answer and SolutionAnswer: "Two "Surface gauges are broadly classified as fixed and universal. Discuss23. Which part of a fixed surface gauge holds the scriber?1 . The spindle 2 . The base 3 . The clamp nut 4 . The snug Answer and SolutionAnswer: "The spindle "The scriber is attached to the upright spindle of a fixed surface gauge. Discuss24. Besides adjustable spindle positioning, what is another advantage of a universal surface gauge?1 . Lower cost 2 . Simpler design 3 . Ability to be used on cylindrical surfaces 4 . Greater accuracy Answer and SolutionAnswer: "Ability to be used on cylindrical surfaces "he design of a universal surface gauge makes it suitable for use on curved surfaces like cylinders. Discuss25. What is the purpose of the clamp nut on a fixed surface gauge?1 . To secure the base to a surface 2 . To hold the scriber in place 3 . To adjust the spindle height 4 . To allow for fine adjustments Answer and SolutionAnswer: "To hold the scriber in place "The clamp nut is used to fasten and secure the scriber to the spindle. Discuss26. Which type of surface gauge is simpler in design?1 . Universal 2 . Depends on the manufacturer 3 . Both are equally complex 4 . Fixed Answer and SolutionAnswer: "Fixed "Fixed surface gauges have a simpler construction compared to universal surface gauges. Discuss27. Which type of surface gauge allows for fine adjustments?1 . Fixed 2 . Universal 3 . Both 4 . Neither Answer and SolutionAnswer: "Universal "Universal surface gauges are designed with mechanisms for making fine adjustments. Discuss28. What is the primary use of a cold chisel?1 . Drilling holes 2 . Chipping and cutting metal 3 . Measuring angles 4 . Smoothing surfaces Answer and SolutionAnswer: "Chipping and cutting metal "Cold chisels are designed for cutting and shaping metal through chipping. Discuss29. What is "chipping" in the context of metalworking?1 . Removing excess metal with a chisel and hammer 2 . Joining metal pieces 3 . Polishing metal surfaces 4 . Measuring metal thickness Answer and SolutionAnswer: "Removing excess metal with a chisel and hammer "Chipping involves using a chisel and hammer to remove unwanted metal. Discuss30. What process is typically used to finish a surface after chipping?1 . Welding 2 . Grinding 3 . Filing 4 . Painting Answer and SolutionAnswer: "Filing "Chipping leaves a rough surface, which is then smoothed by filing. Discuss12345
