Practice Test: Question Set - 09
1. Carriage in a lathe moves
- (A) Parallel to
the axis of rotation
- (B) At any angle
to the axis of rotation
- (C) Perpendicular
to the axis of rotation
- (D) Either 'A'
or 'B'
2. Which one of the following statements in respect of thread cutting is NOT correct?
- (A) Inserted
tool bits are more advantageous while cutting threads
- (B) Before
cutting internal threads, the hole should be chamfered
- (C) When
internal thread cutting is done in a blind hole, a recess should be provided
- (D) When cutting
internal threads, the core diameter may be equal to the size of external
threads
3. Helix angle is found on
- (A) Feed rod of
lathe
- (B) Threading
tool
- (C) Threaded
workpiece
- (D) Taper
turning attachment
4. What is the function of the drop-worm provided in the apron of a centre lathe?
- (A) Engages /
disengages the power feed
- (B) Changes the
direction of rotation of the workpiece
- (C) Changes the
feed direction
- (D) Engages /
disengages the lead screw
5. To cut 20 mm internal square thread with a pitch of 2.5 mm, the core diameter should be
- (A) 17.5 mm
- (B) 18.5 mm
- (C) 20.0 mm
- (D) 22.5 mm
6. Which one of the following statements is true with reference to the tool life?
- (A) Time between
starting and finishing a job
- (B) Total time
for turning work including regarding of tool
- (C) Time between
two successive regrinds
- (D) Time between
starting of metal cutting and tool wear out
7. In a gap bed lathe, the gap is provided
- (A) Just below
the nose of the headstock spindle
- (B) Just below
the spindle of the tailstock
- (C) In the
middle of the bed
- (D) Anywhere in
the bed
8. Which one of the following controls the length of taper cut by the compound slide method?
- (A) Tailstock
- (B) Top slide
- (C) Cross slide
- (D) Saddle
9. Which one of the following combination of movements is used to turn a ball on a centre lathe with single point tool?
- (A) Carriage and
compound slides are used
- (B) Cross slide
and compound slides are used
- (C) Carriage and
cross slide are used
- (D) Compound
slide and apron are used
10. The lathe bed has
- (A) One set of
'V' guideways and flatways
- (B) Two sets of
'V' guideways and flatways
- (C) Three sets
of 'V' guideways and flatways
- (D) Four sets of
'V' guideways and flatways
11. Which one of the following statements in respect of eccentric turning is correct?
- (A) In an
eccentric shaft, the centers of the individual diameters are displayed
- (B) Eccentric
shaft can be turned by holding it in a three-jaw chuck
- (C) Higher speed
is chosen for eccentric turning
- (D) It is
preferred to give more depth of cut in the beginning while turning an eccentric
shaft
12. The face plate is used for turning
- (A) Regular
shaped jobs
- (B) Irregular
shaped jobs
- (C) Flat jobs
- (D) None of the
above
13. When machining irregularly shaped workpiece held in face plate, counterbalancing is done by clamping weights. This is done
- (A) Before
mounting the face plate on the spindle nose
- (B) After
mounting the face plate on the spindle nose and revolving the workpiece at the
slowest rpm
- (C) After
mounting the face plate on the spindle nose and keeping the spindle in neutral
position
- (D) After taking
the rough cut
14. By which one of the following, a multi-start thread is cut on a lathe?
- (A) By a chaser
- (B) By a die
head
- (C) By a
single-point tool
- (D) By a split
die
15. You want to fix an irregularly shaped workpiece on a lathe, which one of the following accessories is the most appropriate?
- (A) Three-jaw
self-centering chuck
- (B) Driving
plate
- (C) Face plate
- (D) Catch plate
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