Practice Test: Question Set - 11
1. The negative rake angle is generally provided on the tool made of
- (A) High speed
steel
- (B) Tool steel
- (C) Tungsten
carbide
- (D) High carbon
steel
2. Dead center, as compared with the live center, bears or resists
- (A) No
friction
- (B) Equal
friction
- (C) Less
friction
- (D) More
friction
3. What effective change will occur to the tool geometry if the cutting tool is set below the centre height on lathe?
- (A) Front
clearance angle increases
- (B) Front
clearance angle decreases
- (C) Front
clearance angle remains the same
- (D) Front
clearance angle becomes zero
4. Which one of the following on a lathe is used to give depth of cut?
- (A) Compound
slide
- (B) Top slide
- (C) By adjusting
the tool
- (D) Cross slide
5. Which one of the following tool posts is easy for setting the tool center height of the tool in a lathe?
- (A) Open side
tool post
- (B) Single screw
tool post
- (C) Four-way
tool post
- (D) Universal
tool post
6. Which one of the following is NOT a part of the taper turning attachment?
- (A) Guide block
- (B) Sliding
block
- (C) Guide bar
- (D) Carrier
7. When using a yoke type taper turning attachment, the depth of cut is given by
- (A) Cross slide
- (B) Compound
slide
- (C) Tailstock
- (D) Adjusting
the tool
8. In the parting off tool which angle will help the tool to penetrate into the work without running at the sides?
- (A) Top rake
angle
- (B) Front
clearance angle
- (C) Side
clearance angle
- (D) Back clearance
angle
9. A simple gear train is to be used to cut a thread with a certain pitch. A driver gear with 3 teeth more than that of the calculated value mounted due to non-availability of the required gear from the set. The thread that is cut will have the pitch
- (A) More than
that required throughout the length
- (B) Less than
that required throughout the length
- (C) Equal to
that required throughout the length
- (D) More for a
certain length and then less for the remaining length
10. Taper turning by using compound slide method can cause the following defect.
- (A) Chatter
- (B) Poor surface
finish
- (C) Taper angle
more than set
- (D) Taper angle
less than set
11. Which one of the following factors will NOT influence the selection of the cutting speed?
- (A) Diameter of
the workpiece
- (B) Workpiece
material
- (C) Tool
material
- (D) Operation to
be performed
12. A fixed steady rest is used to
- (A) Support the
tool rigidly to avoid chatter during operation
- (B) Support long
shafts that are being threaded for their full length
- (C) Support
workpiece during facing large diameter workpiece with short length
- (D) Support long
workpiece held in chuck, to perform operations at the overhanging end
13. One of the parts of a centre lathe is the tumbler gear unit. It is provided to
- (A) Change the
direction of feed
- (B) Transmit
motion from feed shaft to the carriage
- (C) Change the
direction of rotation of the work
- (D) Alter the
spindle speed
14. When the threading tool reaches the end of the thread, the tool should be
- (A) Left in the
groove and reverse the workpiece
- (B) Withdrawn
after stopping the machine
- (C) Withdrawn
while the tool is taking cut
- (D) Withdrawn
after removing the workpiece
15. A M30 thread is rough cut using a thread roughing tool. Which one of the following is the correct procedure for aligning the finishing tool with the thread groove?
- (A) Work
stationary, tool adjusted and positioned in the groove by compound slide and
cross slide
- (B) Work
stationary, tool adjusted and positioned in the groove by carriage hand wheel
and cross slide hand wheel
- (C) Work
revolving, half nut engaged, tool positioned in the groove by compound slide
and cross slide
- (D) Work
revolving, half nut engaged, tool positioned in the groove by carriage and
cross slide hand wheels
16. The matching scroll threads on the back faces of the chuck jaws of a concentric chuck are
- (A) Equal in
numbers but unequal in pitch
- (B) Unequal in
numbers but equal in pitch
- (C) Unequal
in numbers and unequal in pitch
- (D) Equal in
numbers and equal in pitch
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