Horizontal core
Vertical core
Drop core
Balanced core
C. Drop core
Carbon electrode and the work
Metal electrode and the work
Bare metal electrode and the work
Two tungsten electrodes and the work
Equal to minor diameter of the thread
Equal to pitch diameter of the thread
A little larger than the minor diameter of the thread
A little larger than the pitch diameter of the thread
Ram the sand harder at the pattern face with decreasing hardness towards the back of the mould
Ram the sand harder at the back of the mould and softer on the pattern face
Produce uniform packing of sand in the mould
Give uniform sand hardness throughout the mould
3000°C to 4000°C
4000°C to 5000°C
5000°C to 6000°C
6000°C to 7000°C
Feeler gauge
Slip gauge
Ring gauge
Plug gauge
1800°C
2100°C
2400°C
3200°C
Cast iron
Mild steel
High speed steel
Cast tool steel
Grain structure is distorted
Strength and hardness of metal increases
Close dimensional tolerance can be maintained
All of the above
Outside micrometer
Inside micrometer
Depth gauge micrometer
Vernier caliper
It is not possible to reduce at one stage
Annealing is needed between stages
Accuracy in dimensions is not possible otherwise
Surface finish improves after every drawing stage
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
30°-40°
40°-50°
50°-60°
60°-70°
Equal to
Less than
Greater than
None of these
Equal to
Smaller than
Larger than
None of these
Rectangular
Square
Hexagonal
Octagonal
Lower deviation is zero
Upper deviation is zero
Lower and upper deviations are zero
None of these
One side of the actual size
One side of the nominal size
Both sides of the actual size
Both sides of the nominal size
Red colour
Yellow colour
Black colour
Blue colour
Steel
Cast iron
Copper
All of these
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
Flat chisel
Cape chisel
Round nose chisel
Diamond pointed chisel
7 to 103 kN/m²
70 to 280 kN/m²
280 to 560 kN/m²
560 to 840 kN/m²
Drag
Cheek
Cope
None of these
Sand slinger
Squeezing machine
Jolt machine
Stripper plate machine
30°-40°
40°-50°
50°-60°
60°-70°
Plunging
Notching
Slitting
Forming
Aluminium
Wax
Lead
All of these
Black colour
White colour
Maroon colour
Yellow colour
30% sand and 70% clay
50% sand and 50% clay
70% sand and 30% clay
90% sand and 10% clay
Direct current with straight polarity is used
Direct current with reversed polarity is used
Alternating current is used
Any one of these