1) Which one of the following tool angle is provided to avoid rubbing of the body of the tool with the workpiece?
Rake angle
Helix angle
Clearance angle
None of the above
2) Which one of the following is used only for finishing and maintaining the correct form of the thread?
Tap
Threading tool
Threading chaser
Tipped tool
3) The negative rake angle is generally provided on the tool made of ..............
High-speed tool
Tool steel
Tungsten carbide
High carbon steel
4) The chip breaker on a lathe tool is essential when
Turning soft material
Turning ductile materials and to break the chips
Turning cast iron
Turning hardened materials
5) What effective change will occur to the tool geometry if the cutting tool is set below the center height on the lathe?
Front clearance angle increases
Front clearance angle decreases
Front clearance angle remains the same
Front clearance angle becomes zero
6) A tool, which is used to enlarge a previously drilled hole is known as
Facing tool
Boring tool
Form tool
Turning tool
7) Inserted HSS tool bits are more useful for the ...................... operation
Boring
External threading
Internal threading
All the above
8) Which one of the following materials are used for manufacturing center drills?
High-speed steel
Mild steel
Cast steel
Cast iron
9) Which among the following statements in respect of chasers is correct?
Chaser is a single point cutting tool
Cutting threads by a chaser is a slower process than that by a single point tool
Cutting threads by chaser gives a better finish.
The same chaser can be used for cutting any pitch of thread irrespective of the type of chaser used
10) Which among the following statements in respect of the lathe cutting tools is correct?
The ceramic tool has more resistance to shock as compared to HSS tool
The property of tool chipping off with vibration is more for cemented carbide tools than that of HSS tools
Red hotness temperature is higher for high carbon steel tool than that of carbide tool
HSS tool can work at more spindle speed and feed than cemented carbide tool
11) In the parting off tool which angle will help the tool to penetrate into the work without rubbing at the sides?
Top rake angle
Back clearance angle
Front clearance angle
Side clearance angle
12) Which one of the following angles in the lathe tool helps for easy flow of chips?
Front clearance angle
Top rake angle
Back clearance angle
Side clearance angle
13) Which among the following statements in respect of chip breakers is correct?
Chip breakers are essential for breaking the long continuous chips into small pieces.
Chip breakers are necessary to break the chips to protect the finished work surfaces.
Chip breakers are provided to curl and break the chips.
All the above
14) Helix angle is found on
taper turning attachment
threaded workpiece
feed rod of the lathe
threading tool
15) The width of the tool used to cut 10 mm pitch square thread is
10 mm
2.5 mm
5 mm
7.5 mm
16) The included angle of the countersinking portion of a center drill of type ‘B’ used for protecting the center hole is
75°
900°
100°
120°
17) Which one of the following factors will NOT influence the selection of the cutting speed?
A diameter of the workpiece
Tool material
Workpiece material
The operation to be performed
18) Which one of the following angles of the rough turning tool, depends upon the feed rate chosen?
Side clearance angle
Side rake angle
Front clearance angle
Top rake angle
19) The size of the center drill is selected on the basis of the
material of the workpiece
length of the workpiece
the operation to be performed on the workpiece
the diameter of the workpiece
20) Taps are surface treated to
prevent them from getting corroded
be used only on automatic threading machines
improve the wear resistance property
improve the appearance
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