Machining allowance
Draft allowance
Shrinkage allowance
Distortion allowance
B. Draft allowance
The angular clearance on dies varies from 0.5° to 1°
In drawing operation, the metal flows due to plasticity
In press operation, the size of the pierced hole is independent of the size of punch
None of the above
1800°C
2100°C
2400°C
3200°C
Drawing
Rolling
Piercing
Forging
Rectangular
Square
Hexagonal
Octagonal
Less than 0.1 percent
Less than 0.3 percent
More than 0.3 percent
Anywhere between 0.1 to 1 percent
Shearing
Piercing
Punching
Blanking
Die casting method
Slush casting method
Permanent mould casting method
Centrifugal casting method
At the outer cone
At the inner cone
Between the outer and inner cone
At the torch tip
Check the diameter of shafts or studs
Test the accuracy of holes
Check the clearance between two mating surfaces
All of the above
Hot rolling
Hot drawing
Hot piercing
Hot extrusion
Helium gas
Argon gas
Either (A) or (B)
None of these
Melting pot is separate from the machine
Melting pot is an integral part of the machine
Melting pot may have any location
Low temperature and pressure is used
A cylindrical hole in a sheet of metal by the punch and the die
A hole (other than cylindrical) in a sheet of metal by the punch and the die
A flat sheet to the desired shape
A number of holes evenly spaced in a regular pattern on a sheet of metal
42 mm
44 mm
46 mm
48 mm
Boring
Marking
Cutting
None of these
Do not require bevelling
Should be bevelled to a single-V or U-groove
Should have a double-V or U-groove on one side
Should have a double-V or U-groove on both sides
Aluminium
Wax
Lead
All of these
1800°C
2100°C
2400°C
3200°C
Ferrous alloys with low melting temperature are casted
Ferrous alloys with high melting temperature are casted
Nonferrous alloys with low melting temperature are casted
Nonferrous alloys with high melting temperature are casted
Only one operation is performed at each stroke of the ram
Two or more operations are performed simultaneously at the single stroke of the ram
Two or more cutting operations are performed at one station of the press in every stroke of the ram
Both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram
Cutting a sheet of metal in a straight line along the length
Removal of metal to the desired shape from the edge of a plate
Cutting a sheet of metal through part of its length and then bending the cut portion
Bending a sheet of metal along a curved axis
Bottom part
Middle part
Top part
None of these
Work is connected to the positive terminal and the electrode holder to the negative terminal
Work is connected to the negative terminal and the electrode holder to the positive terminal
Work is connected to the positive terminal and the electrode holder is earthed
Work is connected to the negative terminal and the electrode holder is earthed
Actual deviation
Upper deviation
Lower deviation
Fundamental deviation
Simple die
Progressive die
Compound die
Combination die
t
1.5 t
3 t
6 t
Sand slinger
Squeezing machine
Jolt machine
Stripper plate machine
400°C
600°C
800°C
None of these
Riser
Sprue
Core
None of these
Is extensively used for making bolts and rivets
Is used for reducing the diameters of round bars and a tube by rotating dies which open and close rapidly on the work
Is used to improve fatigue resistance of the metal by setting up compressive stresses in its surface
Consists of pressing the metal inside a chamber to force it out by high pressure through an orifice which is shaped to provide the desired form of the finished part