Equal to
Less than
Greater than
None of these
C. Greater than
Bottom part
Middle part
Top part
None of these
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
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
Equal to
Less than
Greater than
None of these
Large electrode is used
Welding rod coated with slag is used
Welding rod coated with fluxing material is used
None of the above
Form internal cavities in the casting
Improve mould surface
Form a part of a green sand mould
All of these
The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction
The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction
The bottom and middle roll rotate in the same direction
Any one of the above
Red colour
Yellow colour
Black colour
Blue colour
Check the diameter of shafts or studs
Test the accuracy of holes
Check the clearance between two mating surfaces
All of the above
Drag
Cheek
Cope
None of these
Light in weight
Easy to work
Corrosion resistant
All of these
Hardened
Tempered
Hardened and tempered
Case hardened
Small
Large
Very large
Not provided
Green sand
Dry sand
Loam sand
Parting sand
Lower critical temperature
Upper critical temperature
Eutectic temperature
Recrystallisation temperature
Shift
Sand wash
Swell
Scab
Core is made of sand
Core is made of ferrous metal
Core is made of nonferrous metal
No core is used
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
Ferrous materials
Ductile materials
Hard materials
None of these
Low melting temperature
High melting temperature
Both (A) and (B)
None of these
Punch
Die
Half on the punch and half on the die
Either on punch or die depending upon designer's choice
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
3000°C to 4000°C
4000°C to 5000°C
5000°C to 6000°C
6000°C to 7000°C
Actual deviation
Upper deviation
Lower deviation
Fundamental deviation
1800°C
2100°C
2400°C
3200°C
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
Hot piercing
Extrusion
Cold peening
Cold heading
Aluminium
Cast iron
Steel
Copper
Lap joints in plates having 0.025 mm to 1.25 mm thickness
Lap joints in plates having thickness above 3 mm
Butt joints in plates having 0.025 mm to 1.25 mm thickness
Butt joints in plates having thickness above 3 mm
Helium gas
Argon gas
Either (A) or (B)
None of these