Solid form
Gaseous form
Liquid form
Any one of these
C. Liquid form
Charcoal and iron oxide
Charcoal and aluminium
Iron oxide and aluminium
Charcoal, iron oxide and aluminium
Carbon arc welding
Submerged arc welding
TIG arc welding
MIG arc welding
Grinding the cutting edges sharp
Increasing the hardness of tool
Providing shear on tool
Increasing the hardness of die
Striking tool
Planing tool
Boring tool
Marking tool
1 to 5 volts
6 to 10 volts
11 to 20 volts
50 to 100 volts
Equal volumes of oxygen and acetylene
More volume of oxygen and less volume of acetylene
More volume of acetylene and less volume of oxygen
None of the above
Actual deviation
Upper deviation
Lower deviation
Fundamental deviation
Black colour
White colour
Maroon colour
Yellow colour
Press load is reduced
Good cut edge is obtained
Warping of sheet is minimised
Cut blanks is straight
Porosity of the metal is largely eliminated
Grain structure of the metal is refined
Mechanical properties are improved due to refinement of grains
All of the above
Die casting
Shell moulding
Investment moulding
Sand casting
Boring
Marking
Cutting
None of these
d
1.5d
3d
6d
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
Spot welding
Seam welding
Flash butt welding
Upset butt welding
t
1.5 t
3 t
6 t
Voltage
Flow of current
Contact resistance
All of these
Cross filing
Draw filing
Pull and push filing
None of these
Machining allowance
Draft allowance
Shrinkage allowance
Distortion allowance
Solid form
Gaseous form
Liquid form
Any one of these
1000°C
1250°C
2100°C
3200°C
Die casting method
Slush casting method
Permanent mould casting method
Centrifugal casting method
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
8
12
18
20
One is working roll and three are backing up rolls
Two are working rolls and two are backing up rolls
Three are working rolls and one is backing up roll
All of the four are working rolls
1800°C
2100°C
2400°C
3200°C
Red colour
Yellow colour
Black colour
Blue colour
Shearing
Piercing
Punching
Blanking
Hot forging
Hot spinning
Hot extrusion
Hot drawing
Outside micrometer
Inside micrometer
Depth gauge micrometer
Vernier caliper