Question 1

On drying, wood

Accepted Answer

A) expands 
B) shrinks 
C) changes colour 
A) expands 
B) shrinks 
C) changes colour B

Question 2

Aluminium is not a very good material for die casting because

Accepted Answer

A) it is very light but strong 
B) its melting point is high, it erodes the die surface and tends to react chemically with die 
C) it cools much slowly 
D) none of the above 
A) it is very light but strong 
B) its melting point is high, it erodes the die surface and tends to react chemically with die 
C) it cools much slowly 
D) none of the above B

Question 3

Which heat treatment is applicable to aluminium alloy castings?

Accepted Answer

A) Stabilizing 
B) Solution heat treatment 
C) Artificial ageing 
D) all of the above 
A) Stabilizing 
B) Solution heat treatment 
C) Artificial ageing 
D) all of the above D

Question 4

The purpose of clay in a moulding sand is to

Accepted Answer

A) Act as a binder in the mould 
B) Make the mould refractory 
C) Mak the mould permeable 
A) Act as a binder in the mould 
B) Make the mould refractory 
C) Mak the mould permeable

Question 5

The order of dimensional accuracy in die casting is nearly

Accepted Answer

A) 4 percent 
B) 0.4 percent 
C) 0.04 percent 
D) 0.004 percent 
A) 4 percent 
B) 0.4 percent 
C) 0.04 percent 
D) 0.004 percent

Question 6

Warped castings may be produced due to

Accepted Answer

A) poor collapsibility of cores 
B) non-provision of camber allowance on the pattern 
C) weak flasks 
D) any of the above 
A) poor collapsibility of cores 
B) non-provision of camber allowance on the pattern 
C) weak flasks 
D) any of the above

Question 7

The function of ejection pin in die casting is to

Accepted Answer

A) pushout casting off the die 
B) provide movable core spaces 
C) facilitate die casting of several components 
D) none of the above 
A) pushout casting off the die 
B) provide movable core spaces 
C) facilitate die casting of several components 
D) none of the above

Question 8

Sand acquires a predetermined shape under pressure and retains the same when pressure is removed. This is due to the property of sand known as

Accepted Answer

A) Cohesiveness 
B) Plasticity 
C) Refractoriness 
D) none of the above 
A) Cohesiveness 
B) Plasticity 
C) Refractoriness 
D) none of the above

Question 9

Slag and dross can be removed by

Accepted Answer

A) skimming from the molten metal 
B) using bottom pouring ladle 
C) using pouring basin in place of a pouring cup 
D) any of the above 
A) skimming from the molten metal 
B) using bottom pouring ladle 
C) using pouring basin in place of a pouring cup 
D) any of the above

Question 10

Of the following metals, the pouring rate should be minimum for

Accepted Answer

A) brass 
B) cast iron 
C) aluminium 
D) steel 
A) brass 
B) cast iron 
C) aluminium 
D) steel

Question 11

Which of the following metal can be cast in plaster moulds?

Accepted Answer

A) Yellow brass 
B) Manganese 
C) Aluminium bronzes 
D) All of the above 
A) Yellow brass 
B) Manganese 
C) Aluminium bronzes 
D) All of the above

Question 12

A defect in castings in which a discontinuity is formed due to the imperfect fusion of two streams of metal in the mould cavity is known as

Accepted Answer

A) scabs 
B) hot tears 
C) cold shut 
D) drops 
A) scabs 
B) hot tears 
C) cold shut 
D) drops

Question 13

Mixing coal dust with moulding sand results in

Accepted Answer

A) blackening of the mould 
B) strong mould 
C) good air venting 
D) none of the above 
A) blackening of the mould 
B) strong mould 
C) good air venting 
D) none of the above

Question 14

Average amount of sand required in a foundry for making one tonne of casting is nearly

Accepted Answer

A) 2 tonnes 
B) 20 tonnes 
C) 0.1 tonne 
D) 0.2 tonne 
A) 2 tonnes 
B) 20 tonnes 
C) 0.1 tonne 
D) 0.2 tonne

Question 15

Heat treatment of castings is usually done for

Accepted Answer

A) refinement of grain structure 
B) improving machinability 
C) relieving internal stress 
D) any of the above 
A) refinement of grain structure 
B) improving machinability 
C) relieving internal stress 
D) any of the above

Question 16

In small castings which of the following allowance can be ignored?

Accepted Answer

A) Machining allowance 
B) Rapping allowance 
C) Draft allowance 
D) Shrinkage allowance 
A) Machining allowance 
B) Rapping allowance 
C) Draft allowance 
D) Shrinkage allowance

Question 17

The principal ingredients of moulding sands are

Accepted Answer

A) silica sand, carbon, hydrocarbons and moisture 
B) silica sand, clay and water 
C) silica sand, dust and crabon 
D) silica sand, carbon and water 
A) silica sand, carbon, hydrocarbons and moisture 
B) silica sand, clay and water 
C) silica sand, dust and crabon 
D) silica sand, carbon and water

Question 18

Which of the following process is used for melting of steel?

Accepted Answer

A) L D process 
B) Kaldo process 
C) Duplex process 
D) All of the above 
A) L D process 
B) Kaldo process 
C) Duplex process 
D) All of the above

Question 19

Refractoriness in the moulding sand is due to the presence of

Accepted Answer

A) Clay 
B) Additives and Binders 
C) Silica 
A) Clay 
B) Additives and Binders 
C) Silica

Question 20

Hairlines in die casted materials result from

Accepted Answer

A) chemical attack 
B) mechanical erosion 
C) thermal fatigue 
D) all of the above 
A) chemical attack 
B) mechanical erosion 
C) thermal fatigue 
D) all of the above

On drying, wood

Aluminium is not a very good material for die casting because

Which heat treatment is applicable to aluminium alloy castings?

The purpose of clay in a moulding sand is to

The order of dimensional accuracy in die casting is nearly

Warped castings may be produced due to

The function of ejection pin in die casting is to

Sand acquires a predetermined shape under pressure and retains the same when pressure is removed. This is due to the property of sand known as

Slag and dross can be removed by

Of the following metals, the pouring rate should be minimum for

Which of the following metal can be cast in plaster moulds?

A defect in castings in which a discontinuity is formed due to the imperfect fusion of two streams of metal in the mould cavity is known as

Mixing coal dust with moulding sand results in

Average amount of sand required in a foundry for making one tonne of casting is nearly

Heat treatment of castings is usually done for

In small castings which of the following allowance can be ignored?

The principal ingredients of moulding sands are

Which of the following process is used for melting of steel?

Refractoriness in the moulding sand is due to the presence of

Hairlines in die casted materials result from

Foundry and Casting

Casting Techniques and Processes

Foundry and Casting Processes: Properties, Tools, and Methods

Casting and Foundry Technology

Foundry Operations and Techniques

Casting and Moulding Processes: Part A

Casting and Moulding Processes: Part B

Foundry Processes and Techniques

Casting Processes and Materials

Casting and Moulding Processes: Techniques and Defects

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Exam 1: Foundry Processes and Materials

On drying, wood

Aluminium is not a very good material for die casting because

Which heat treatment is applicable to aluminium alloy castings?

The purpose of clay in a moulding sand is to

The order of dimensional accuracy in die casting is nearly

Warped castings may be produced due to

The function of ejection pin in die casting is to

Sand acquires a predetermined shape under pressure and retains the same when pressure is removed. This is due to the property of sand known as

Slag and dross can be removed by

Of the following metals, the pouring rate should be minimum for

Which of the following metal can be cast in plaster moulds?

A defect in castings in which a discontinuity is formed due to the imperfect fusion of two streams of metal in the mould cavity is known as

Mixing coal dust with moulding sand results in

Average amount of sand required in a foundry for making one tonne of casting is nearly

Heat treatment of castings is usually done for

In small castings which of the following allowance can be ignored?

The principal ingredients of moulding sands are

Which of the following process is used for melting of steel?

Refractoriness in the moulding sand is due to the presence of

Hairlines in die casted materials result from

Foundry and Casting

Casting Techniques and Processes

Foundry and Casting Processes: Properties, Tools, and Methods

Casting and Foundry Technology

Foundry Operations and Techniques

Casting and Moulding Processes: Part A

Casting and Moulding Processes: Part B

Foundry Processes and Techniques

Casting Processes and Materials

Casting and Moulding Processes: Techniques and Defects

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