Same as
Less than
More than
None of these
B. Less than
Melting pot is separate from the machine
Melting pot is an integral part of the machine
Melting pot may have any location
High temperature and pressure is used
Same
Less
More
None of these
Results in a mismatching of the top and bottom parts of a casting
Results in general enlargement of the casting
Occurs near the ingates as rough lumps on the surface of a casting
Occurs as sand patches on the upper surface of a casting
Galvanising
Anodising
Parkerising
Sherardizing
Zinc diffusion process
Process of coating zinc by hot dipping
Process used for making thin phosphate coating on steel
None of the above
Less than 0.1 percent
Less than 0.3 percent
More than 0.3 percent
Anywhere between 0.1 to 1 percent
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
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
Light in weight
Easy to work
Corrosion resistant
All of these
Neutral flame and rightward technique
Oxidising flame and leftward technique
Neutral flame and leftward technique
Carburising flame and rightward technique
Check the trueness of flat surfaces
Locate centres of round rods
Check the surface roughness
None of these
Shift
Sand wash
Swell
Scab
Shearing
Piercing
Punching
Blanking
Delivers molten metal into the mould cavity
Act as a reservoir for the molten metal
Feed the molten metal to the casting in order to compensate for the shrinkage
Delivers molten metal from pouring basin to gate
Steel, cast iron, copper, aluminium etc
Brass and bronze
Hard surfacing materials such as stellite
All of these
Less than 3 mm
5 to 10 mm
12.5 mm
Above 25 mm
t
1.5 t
3 t
6 t
Horizontal core
Vertical core
Drop core
Balanced core
Drawing
Squeezing
Coining
Planishing
Helium gas
Argon gas
Either (A) or (B)
None of these
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
Simple die
Progressive die
Compound die
Combination die
1800°C
2100°C
2400°C
3200°C
Sand slinger
Squeezing machine
Jolt machine
Stripper plate machine
Bending
Stretching
Rolling and stretching
Bending and stretching
7 to 103 kN/m²
70 to 280 kN/m²
280 to 560 kN/m²
560 to 840 kN/m²
Direct current with straight polarity is used
Direct current with reversed polarity is used
Alternating current is used
Any one of these
Mild steel
Brass
Copper
Aluminium
Length
Material
Width
Number of teeth
Red colour
Yellow colour
Black colour
Blue colour