Practice Test: Question Set - 28
1. Which of the following statement is correct about nose radius?
- (A) It improves
tool life
- (B) It
improves the surface finish
- (C) Both (A) and
(B)
- (D) None
of these
2. The main purpose of a boring operation, as compared to drilling, is to
- (A) Drill a hole
- (B) Finish
the drilled hole
- (C) Correct the
hole
- (D) Enlarge
the existing hole
3. Larger end cutting edge angle _________ tool life.
- (A) Increases
- (B) Decreases
- (C) Does not
effect
- (D) None
of these
4. Cutting fluids are used to
- (A) Cool
the tool
- (B) Improve
surface finish
- (C) Cool
the workpiece
- (D) All
of these
5. In a milling operation, two side milling cutters are mounted with a desired distance between them so that both sides of a workpiece can be milled simultaneously. This set up is called
- (A) Gang
milling
- (B) Straddle
milling
- (C) String
milling
- (D) Side
milling
6. The operation performed on a shaper is
- (A) Machining
horizontal surface
- (B) Machining
vertical surface
- (C) Machining
angular surface
- (D) All
of these
7. A twist drill is specified by its
- (A) Shank,
material and diameter
- (B) Shank,
lip angle and size of flute
- (C) Material,
length of body and helix angle
- (D) Any
one of these
8. In the relation VTn = C, the value of n for carbide tools is
- (A) 0.1 to 0.2
- (B) 0.20 to 0.25
- (C) 0.25 to 0.40
- (D) 0.40 to 0.55
9. Slow speed of the spindle is necessary in
- (A) Thread
cutting
- (B) Turning
a work of larger diameter
- (C) Turning
a hard or tough material
- (D) All of these
10. The angle between the face and flank of the single point cutting tool is known as
- (A) Rake
angle
- (B) Clearance
angle
- (C) Lip
angle
- (D) Point
angle
11. Tumbler gears in lathe are used to
- (A) Reduce
the spindle speed
- (B) Cut
gears
- (C) Give desired
direction of movement to the lathe carriage
- (D) Drill
a workpiece
12. In centreless grinding, the surface speed of regulating wheel is
- (A) 5 to 15
m/min
- (B) 15 to 60 m/min
- (C) 60 to 90
m/min
- (D) 90 to 120
m/min
13. Twist drills are made of
- (A) High speed
steel
- (B) Carbon steel
- (C) Stainless
steel
- (D) Either (A)
or (B)
14. Jigs are used
- (A) For
holding and guiding the tool in drilling, reaming or tapping operations
- (B) For holding
the work in milling, grinding, planing or turning operations
- (C) To
check the accuracy of workpiece
- (D) None
of the above
15. Threading is an operation of
- (A) Smoothing
and squaring the surface around a hole
- (B) Sizing
and finishing a small diameter hole
- (C) Producing
a hole by removing metal along the circumference of a hollow cutting tool
- (D) Cutting
helical grooves on the external cylindrical surface
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