51. For turning small taper on long workpiece, the suitable method is
by a form tool
by setting over the tail stock
by a taper turning attachment
by swivelling the comp
✅ The correct answer is option B.
Production Engineering MCQs
52. In case of turning, as the machining proceeds, the spindle speed must __________ with the decrease in diameter of work.
decrease
increase
✅ The correct answer is option B.
53. The top and sides of the table of a shaper usually have
L-type slots
T-type slots
I-type slots
any one of these
✅ The correct answer is option B.
54. The shear velocity is the velocity of
tool relative to the workpiece
chip relative to the tool
tool along the tool face
none of these
✅ The correct answer is option D.
55. When the shear angle is small
path of shear is short and chip is thin
path of shear is large and chip is thick
path of shear is short and chip is thick
path of shear is large
✅ The correct answer is option B.
56. A jig is defined as a device which
holds and locates a workpiece and guides and controls one or more cutting tools
holds and locates a workpiece during an inspection or for a manufacturing operation
is used to check the accuracy of workpiece
all of the above
✅ The correct answer is option A.
57. The enlarging of an existing circular hole with a rotating single point tool is called
boring
drilling
reaming
internal turning
✅ The correct answer is option A.
58. In plunge grinding
the work is reciprocated as the wheel feeds to produce cylinders longer than the width of wheel face
the work rotates in a fixed position as the wheel feeds to produce cylinders equal to or shorter than the width of wheel face
the work is reciprocated as the wheel feeds to produce cylinders shorter than the width of wheel face
the work rotates in a
✅ The correct answer is option B.
59. In drilling aluminium, a drill with
zero helix angle is used
low helix angle is used
high helix angle is used
any helix angle can be
✅ The correct answer is option C.
60. The lathe spindles at the nose end have
internal screw threads
external screw threads
no threads
tapered threads
✅ The correct answer is option B.