401. Crater wear occurs mainly on the September 14, 2025 by Admin [A]. nose part, front relief face and side relief face of the cutting tool [B]. face of the cutting tool at a short distance from the cutting edge only [C]. cutting edge only [D]. front face only ✅ The correct answer is option B.
402. Which of the following statement is wrong about ultra-sonic machining? September 14, 2025 by Admin [A]. It is best suited for machining hard and brittle materials. [B]. It cuts materials at very slow speeds. [C]. It removes large amount of material. [D]. It produces good surface finish. ✅ The correct answer is option C.
403. The lead screw of a lathe has __________ threads. September 14, 2025 by Admin [A]. single start [B]. double start [C]. multi-start [D]. any one of these ✅ The correct answer is option A.
404. The different spindle speeds on a lathe form September 14, 2025 by Admin [A]. arithmetical progression [B]. geometrical progression [C]. harmonical progression [D]. any one of these ✅ The correct answer is option B.
405. In orthogonal cutting system, the maximum chip thickness occurs at the middle. September 14, 2025 by Admin [A]. Correct [B]. Incorrect null null ✅ The correct answer is option A.
406. The facing is an operation of September 14, 2025 by Admin [A]. bevelling the extreme end of a workpiece [B]. embossing a diamond shaped pattern on the surface of a workpiece [C]. reducing the diameter of a workpiece over a very narrow surface [D]. machining the ends of a workpiece to produce a flat surface square with the axis ✅ The correct answer is option D.
407. A push broach as compared to pull broach September 14, 2025 by Admin [A]. has less number of teeth [B]. is short and stocky [C]. removes less material for each pass of the tool [D]. all of the above ✅ The correct answer is option D.
408. The tool made of cemented carbide wear out faster at September 14, 2025 by Admin [A]. slow speeds [B]. medium speeds [C]. fast speeds [D]. very fast speeds ✅ The correct answer is option A.
409. In order to prevent tool from rubbing the work __________ on tools are provided. September 14, 2025 by Admin [A]. rake angles [B]. relief angles null null ✅ The correct answer is option B.
410. A single point thread cutting tool should ideally have September 14, 2025 by Admin [A]. zero rake angle [B]. positive rake angle [C]. negative rake angle [D]. point angle ✅ The correct answer is option A.