1800°C
2100°C
2400°C
3200°C
C. 2400°C
Is a two man saw
Is used for cutting along the grains of wood
Has a narrow blade with two wooden handles
All of the above
Low melting temperature
High melting temperature
Both (A) and (B)
None of these
30% sand and 70% clay
50% sand and 50% clay
70% sand and 30% clay
90% sand and 10% clay
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
30°-40°
40°-50°
50°-60°
60°-70°
Shearing
Piercing
Punching
Blanking
Forward stroke
Return stroke
Both forward and return strokes
None of these
Zinc chloride
Ammonium chloride
Rosin plus alcohol
Borax
Galvanising
Anodising
Parkerising
Sherardizing
Spot welding
Seam welding
Flash butt welding
Upset butt welding
Basic size is 100 mm
Actual size is 100 mm
Difference between the actual size and basic size is 100 mm
None of the above
Smoothing and cleaning out depressions in the mould
Cleaning the moulding sand
Moistening the sand around the edge before removing pattern
Reinforcement of sand in the top part of the moulding box
Poor surface finish is produced
Scale is formed on the metal surface
Close tolerances cannot be maintained
All of these
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
5 cm × 5 cm
10 cm × 10 cm
15 cm × 15 cm
20 cm × 20 cm
Neutral flame and rightward technique
Oxidising flame and leftward technique
Neutral flame and leftward technique
Carburising flame and rightward technique
42 mm
44 mm
46 mm
48 mm
Sand slinger
Squeezing machine
Jolt machine
Stripper plate machine
Zinc diffusion process
Process of coating zinc by hot dipping
Process used for making thin phosphate coating on steel
None of the above
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
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
Shift
Sand wash
Swell
Scab
Bending
Stretching
Rolling and stretching
Bending and stretching
Molten metal is poured in a metallic mould, retained in the mould long enough for the outer skin to solidify and finally mould is turned over to remove molten metal still in molten condition
Molten metal is poured and allowed to solidify while the mould is revolving
Molten metal is forced into mould under high pressure
None of the above
The hot chamber die casting machine is used for casting zinc, tin, lead and other low melting alloys.
The cold chamber die casting machine is used for casting aluminium, magnesium, copper base alloys and other high melting alloys.
The castings produced by centrifugal casting method have open and coarse grained structure.
All of the above
Hold the round bars during marking
Check the trueness of flat surfaces
Locate the centres of round bars
Check the surface roughness
Cold shuts
Blow holes
Shift
Swell
7 to 103 kN/m²
70 to 280 kN/m²
280 to 560 kN/m²
560 to 840 kN/m²
30°
45°
50°
60°
For finishing flat surfaces
For necking down a piece of work
For punching a hole
To finish the punched hole