The lip clearance angle is the angle formed by the
Leading edge of the land with a plane having the axis of the drill
Flank and a plane at right angles to the drill axis
Chisel edge and the lip as viewed from the end of a drill
None of the above
Correct Answer :
B. Flank and a plane at right angles to the drill axis
Related Questions
Ceramic tools are fixed to tool body by
Soldering
Brazing
Welding
Clamping
Trepanning is an operation of
Making a cone-shaped enlargement of the end of a hole
Smoothing and squaring the surface around a hole
Sizing and finishing a small diameter hole
Producing a hole by removing metal along the circumference of a hollow cutting tool
What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?
Thermit welding
Electroslag welding
Resistance welding
Submerged arc welding
The cutting force in punching and blanking operations mainly depends on
The modulus of elasticity of metal
The shear strength of metal
The bulk modulus of metal
The yield strength of metal
Volume of a cube of side l and volume of a sphere of radius r are equal. Both the cube and the sphere are solid and of same material. They are being cast. The ratio of the solidification time of the cube to the same of the sphere is
(4π/6)³ × (r/l)⁶
(4π/6) × (r/l)²
(4π/6)² × (r/l)³
(4π/6)² × (r/l)⁴
Side rake angle of a single point cutting tool is the angle
By which the face of the tool is inclined towards back
By which the face of the tool is inclined sideways
Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool
Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Thread grinding requires work speed from
1 to 3 m/min
5 to 10 m/min
10 to 14 m/min
14 to 20 m/min
A drill considered as a cutting tool having zero rake, is known as a
Flat drill
Straight fluted drill
Parallel shank twist drill
Tapered shank twist drill
The average cutting speed for turning brass with a high speed steel tool is
15 to 19 m/min
25 to 31 m/min
60 to 90 m/min
90 to 120 m/min
The factor responsible for the formation of discontinuous chips is
Low cutting speed and large rake angle
Low cutting speed and small rake angle
High cutting speed and large rake angle
High cutting speed and small rake angle
The height of each tooth of a broach is
Same throughout
In progressively decreasing order
In progressively increasing order
None of these
Which of the following operation is first performed?
Spot facing
Boring
Tapping
Drilling
Which of the following statement is correct for oblique cutting system?
The cutting edge is inclined at an angle less than 90° with the normal to the velocity of the tool.
Frequently, more than one cutting edges are in action.
The chip flows on the tool face at an angle less than 90° with the normal on the cutting edge.
All of the above
In order to have interference fit, it is essential that the lower limit of the shaft should be
Greater than the upper limit of the hole
Lesser than the upper limit of the hole
Greater than the lower limit of the hole
Lesser than the lower limit of the hole
A twist drill is a
Side cutting tool
Front cutting tool
End cutting tool
None of these
In order to grind soft material
Coarse grained grinding wheel is used
Fine grained grinding wheel is used
Medium grained grinding wheel is used
Any one of these
What is the welding defect caused due to improper control and poor removal of slog between passes called?
Mismatch
Under fill
Crack
Porosity
Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles on and 2 cycles off Power supply is at 50 Hz.
3000 welds / min, 75 mm / min
600 welds / min, 1500 mm / min
500 welds/ min, 1250 mm/min
22 welds / min, 55 mm / min
Cutting fluids are used to
Cool the tool
Improve surface finish
Cool the workpiece
All of these
The cutting speed for drilling __________ with high speed steel drills is 24 to 45 m/min.
Mild steel
Copper
Aluminium
Brass
The grinding operation is a
Shaping operation
Forming operation
Surface finishing operation
Dressing operation
Which of the following is the correct data structure for solid models?
Solid part - faces - edges - vertices
Solid part - edges - faces - vertices
Vertices - edges - faces - solid parts
Vertices - faces- edges - solid parts
A 15 mm drilling machine means that it can drill a hole
Of maximum diameter 15 mm
In 15 mm thick plates
Having cross-sectional area of 15 mm²
None of these
The process of improving the cutting action of the grinding wheel is called
Truing
Dressing
Facing
Clearing
The type of reamer used for reaming soft aluminium or copper, is
Straight fluted reamer
Left hand spiral fluted reamer
Right hand spiral fluted reamer
Any one of these
The maximum possible draft in cold rolling of sheet increases with the
Increase in coefficient of friction
Decrease in coefficient of friction
Decrease in roll radius
Decrease in roll velocity
Which one among the following welding processes uses nonconsumable electrode?
Gas metal arc welding
Submerged arc welding
Gas tungsten arc welding
Flux coated arc welding
A feed gear box for a screw cutting lathe is designed on the basis of
Geometric progression
Arithmetic progression
Harmonic progression
None of these
Tumbler gears in lathe are used to
Reduce the spindle speed
Cut gears
Give desired direction of movement to the lathe carriage
Drill a workpiece
In the relation VTn = C, the value of n for ceramic tools is
0.1 to 0.2
0.20 to 0.25
0.25 to 0.40
0.40 to 0.55