মেশিন শপ প্রাক্টিস MCQ
41. The machine which have the efficiency more than 50% is known as—
reversible
idle
non-reversible
none of the mentioned
42. The size of a lathe is specified by—
length between centers
swing over the bed
swing over the carriage
all of these
43. Which of the following is not a part of carriage | of the center lathe?
tool post
apron
edmpound rest
gear box control
44. In roller bearings which type of rolling elements are used?
Cylindrical rollers
Spherical rollers
Taper rollens
All of the above
45. Which type of surface is produced by turning operation in lathe machine?
flat
uper
cylindrical
none of the mentioned
46. In a lathe machine--
Job fixed cutter rotates
Job reciprocates, cutter fixed.
Job rotates, cufter moves
Job fixed, cutter reciprocates
47. A flat surface can be produced by a lathe machine, if the cutting tool moves-
parallel to the axis of rotation of workpiece
perpendicular to the axis of rotation of workpiece
at an angle of 450
none of the above
48. Which of the following is a mechanism for mechanized movements of the carriage along longitudinal axis?
Cross-slide
Compound rest
Saddle
Apron
49. Lathe is primarily used for producing -- surfaces.
flat
taper
curve
none of the mentioned
50. Which machine tool is known as the mother machine tool?
dril
lathe
milling
none of mentioned
51. Traversing of tool parallel to the axis of job is termed as-
cross feed
longitudinal feed
both cross feed and traversing feed
none of the mentioned
52. The type of tool used on lathe, shaper and planer is—
single point cutting tool
two point cutting tool
three point cutting tool
multipoint cutting tool
53. Wheel lathe is the type of-
engine lathe
special purpose lathe
centre lathe
speed lathe
54. What is the function of cone polley drive in lathe machines?
Drive the lead screw
Change the spindle speed
Drive the tail-stock
All of the above
55. Internal gears are made by--
Hobbing
Milling
Shaping with rack cutter
Shaping with pinion cutter
56. Which of the following operation is first operation?
Spot facing
Tapping
Boring
Driling
57. Which type of lathe is also known as centre lathe?
engine lathe
bench lathe
capstan lathe
room lathe
58. Which of the following is not a surface finishing process?
Honing
Lapping
Buffing
Turning
59. The function of taper turning process is to-
reduce the diameter of a workpiece along its length
reduce the diameter of a workpiece along its length
remove the material from end surface of a workpiece
all of the above
60. Which type of surface is produced in facing operation?
cylindrical
flat
taper
none