41. The rear teeth of a broach perform burnishing operation remove minimum metal remove maximum metal remove no metal ✅ The correct answer is option C.
42. In which of the following machine, the work is usually rotated while the drill is fed into work? Sensitive drilling machine Radial drilling machine Gang drilling machine Deep hole drilling mac ✅ The correct answer is option D.
43. In twist fluted drills, chips do not move out automatically. Correct Incorrect ✅ The correct answer is option B.
44. Mild steel during machining produces __________ chips. continuous discontinuous ✅ The correct answer is option A.
45. The tail stock set over method of taper turning is preferred for internal tapers small tapers long slender tapers steep tapers ✅ The correct answer is option C.
46. The width of cutting edge of a parting-off tool varies from 3 to 12 mm 5 to 20 mm 8 to 30 mm 15 to 40 mm ✅ The correct answer is option A.
47. The type of tool used on lathe, shaper and planer is single point cutting tool two point cutting tool three point cutting tool multi-point cutting to ✅ The correct answer is option A.
48. The relief or clearance at the cutting edge of a flat drill varies from 3° to 8° 20° to 30° 60° to 90° 90° to 120° ✅ The correct answer is option A.
49. Which of the following statement is correct about EDM machining? It can machine hardest materials. It produces high degree of surface finish. The tool and work are never in contact with each other. all of these ✅ The correct answer is option D.
50. In reaming process metal removal rate is high high surface finish is obtained high form accuracy is obtained high dimensional accur ✅ The correct answer is option C.