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This set of Foundry Technology Multiple Choice Questions & Answers (MCQs) focuses on Foundry Technology Set 4
Q1 | In low temperature die casting the metals whose alloys are cast are
- aluminium and zinc
- zinc and copper
- copper, zinc and lead
- none of the above
Q2 | Moulding sand properties that depend upon size and shape of grains and bonding material are
- plasticity and adhesiveness
- cohesiveness and permeability
- permeability and plasticity
- adhesiveness and cohesiveness
Q3 | Pattern used in foundry shop is
- Somewhat smaller in size than the casting
- Somewhat larger in size than the casting
- Equal in size to the casting
Q4 | The advantage of investment casting is
- Sound costings are produced
- Inricate shapes can be cast
- Close tolerances can be achieved
- All of the above
Q5 | The tool used to make small holes in the sand mould to allow passage of gases/steam is known as
- Vent wire
- Draw screw
- Draw spike
Q6 | Graphite is sprinkled on to the surface of green sand moulds to
- reduce the number of blow holes
- minimize surface finish
- exclude the burn out effect
- improve surface finish
Q7 | If dross and slag along with the liquid metal reach the mould cavity they produce the defect known as
- misrun
- inclusions
- blow holes
- all of the above
Q8 | The permeability of moulding sand depends on
- grain size
- grain shape
- moisture content
- all of the above
Q9 | Highest melting point metal is
- cast iron
- Tungsten
- Steel
- Nickel
Q10 | Chaplets are
- core binders
- core supports
- mould seats to support core
- core projections
Q11 | Which of the following is measuring and layout tool?
- Trammels
- Combination square
- Marking gauge
- all of the above
Q12 | The method in which green sand is generally used is
- pit moulding
- plate moulding
- bench moulding
- none of the above
Q13 | The amount of machining allowance on castings depends on
- size and shape of the casting
- casting orientation
- characteristics of the metal
- all of the above
Q14 | Which of the following process uses organic binder?
- Shell moulding
- Furan process
- Phenolic isocyanate process
- All of the above
Q15 | Gold melts at
- 1063?C
- 3300?C
- 1444?C
- 2100?C
Q16 | Which wood is difficult to machine?
- Kiln dried wood
- Old and used wood
- Freshly failed wood
- Seasoned wood
Q17 | Coke used in cupola is in the form of
- coal dust
- pulverized coal
- lumps
- any of the above
Q18 | The amount of coal dust added to moulding sand depends on
- shape of the casting
- thickness of the casting
- temperature of pouring
- none of the above
Q19 | Which of the following statement is correct?
- Less sand is used per tonne of non-ferrous castings than for steel
- More sand is used per tonne of non-ferrous castings than for steel
Q20 | Skeleton patterns are generally used for
- hollow castings
- small casting
- large castings
- non-ferrous castings
Q21 | Sodium silicate in sand in often used as
- binder
- permeability promotion agent
- substitute of clay
- refractory material
Q22 | Which of the following defect may occur due to improper design of gating system?
- Cold shuts
- Rough surfaces
- Misruns
- any of the above
Q23 | Pit furnace can be used for the melting of
- cast iron
- aluminium
- brass
- any of the above
Q24 | Shell moulding is a process in which
- a mould comprising thin shell is produced by mixing dry silica and resin binder
- a thin shell is cast in sand mould
- a strong core is prepared
Q25 | Die casting dies are generally made of
- aluminium alloys
- bronze
- cast iron
- alloy steels