Neutral flame
Oxidising flame
Carburising flame
All of these
A. Neutral flame
Solid form
Gaseous form
Liquid form
Any one of these
8
12
18
20
Green sand
Dry sand
Loam sand
Oil sand
Sand slinger
Squeezing machine
Jolt machine
Stripper plate machine
Simple die
Progressive die
Combination die
Compound die
Hold the round bars during marking
Check the trueness of flat surfaces
Locate the centres of round bars
Check the surface roughness
Alternating current with high frequency is used
Alternating current with low frequency is used
Direct current is used
Any one of these
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
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
Ferrous materials
Ductile materials
Hard materials
None of these
Feeler gauge
Slip gauge
Ring gauge
Plug gauge
Check the trueness of flat surfaces
Locate centres of round rods
Check the surface roughness
None of these
Collapsibility
Permeability
Cohesiveness
Adhesiveness
5 cm × 5 cm
10 cm × 10 cm
15 cm × 15 cm
20 cm × 20 cm
Uniform solid sections
Uniform hollow sections
Uniform solid and hollow sections
Varying solid and hollow sections
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
3000°C to 4000°C
4000°C to 5000°C
5000°C to 6000°C
6000°C to 7000°C
Lower deviation is zero
Upper deviation is zero
Lower and upper deviations are zero
None of these
Shearing
Piercing
Punching
Blanking
Punch
Die
Half on the punch and half on the die
Either on punch or die depending upon designer's choice
Collapsibility
Permeability
Cohesiveness
Adhesiveness
Symmetrical shape about vertical axis
Symmetrical shape about horizontal axis
Irregular shape
Nonferrous metal only
Rectangular
Square
Hexagonal
Octagonal
Grinding the cutting edges sharp
Increasing the hardness of tool
Providing shear on tool
Increasing the hardness of die
Low melting temperature
High melting temperature
Both (A) and (B)
None of these
Bending
Stretching
Rolling and stretching
Bending and stretching
Grain structure is distorted
Strength and hardness of metal increases
Close dimensional tolerance can be maintained
All 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
Actual deviation
Upper deviation
Lower deviation
Fundamental deviation
30% sand and 70% clay
50% sand and 50% clay
70% sand and 30% clay
90% sand and 10% clay