Exam 9: Casting and Moulding Processes and Properties

Continuous passing of CO₂ through the mould can decrease the strength of mould and results in a weak mould.

The_______________is responsible for the impact strength in the molding sand.

Dry sand cores may be required for the provision of spigot at the end section of the casting.

Which of the following parts is provided in between the mould and casing to reduce the vibrations?

Cores used in PMC are usually made up of?

There is no direct contact of flame and metal in which of the following type of furnace?

The machine used to mix shell mould particles consistently is_______________      

The size of the sand particles in the molding sand is the biggest.

The rotor of a three phase induction motor can never attain synchronous speed.

Which of the following is the most important property of the molding sand in cores?

Hollow casting is the other name of which of the following special casting process?

Electric arc furnaces are most suitable for which of the following type of material?

Additives can be used for the non-ferrous application to avoid the poor collapsibility of the mould.

In centrifugal casting, the casting yield is approximately equaled to 100%.

Binding property of the sand increases because of the_______________ property.

Which of the following types of centrifugal casting process is used for the casting, whose shape of casting is not axi- symmetric?

Sometimes over-gassing can cause the sticking of pattern to the mould in CO₂ moulding.

Castings made by the centrifugal casting process have negligible porosity.

The_______________ property ensures the removal of excess sand in the mould box.

Shrinkage allowance does not depend on which of the following factor?