Question 1

White cst iron contains

Accepted Answer

A) free graphite 
B) cementite 
C) free carbon 
D) none of the above 
A) free graphite 
B) cementite 
C) free carbon 
D) none of the above B

Question 2

Which of the following defect is likely to occur due to improper design of gatting system?

Accepted Answer

A) Shrinkage 
B) Porosity 
C) Mould erosion 
D) any of the above 
A) Shrinkage 
B) Porosity 
C) Mould erosion 
D) any of the above D

Question 3

When bench moulding is adopted using three boxes, the central box is called

Accepted Answer

A) cope 
B) cheek 
C) drag 
D) none of the above 
A) cope 
B) cheek 
C) drag 
D) none of the above B

Question 4

Which of the following sand must possess high refractoriness?

Accepted Answer

A) Backing sand 
B) Parting sand 
C) Facing sand 
D) all of the above 
A) Backing sand 
B) Parting sand 
C) Facing sand 
D) all of the above

Question 5

Carbondioxide moulding is useful for

Accepted Answer

A) very thin sections 
B) regular sections 
C) heavy and thick walled sections 
D) all of the above 
A) very thin sections 
B) regular sections 
C) heavy and thick walled sections 
D) all of the above

Question 6

Polystyrene is generally available in the form of

Accepted Answer

A) trapezoidal moulds 
B) square sections 
C) plates 
D) cylindrical bars 
A) trapezoidal moulds 
B) square sections 
C) plates 
D) cylindrical bars

Question 7

A slick is mainly used for

Accepted Answer

A) repairing and finishing of mould 
B) removing pattern from the mould 
C) making openings in mould 
D) providing openings in the mould 
A) repairing and finishing of mould 
B) removing pattern from the mould 
C) making openings in mould 
D) providing openings in the mould

Question 8

In furan moulding which of the following is used as a catalyst?

Accepted Answer

A) Potassium hydroxide 
B) Phosphoric acid 
C) Ammonium hydroxide 
D) Phenol formaldehyde 
A) Potassium hydroxide 
B) Phosphoric acid 
C) Ammonium hydroxide 
D) Phenol formaldehyde

Question 9

The rammer used for packing the sand in pockets/corners of a mould is known as

Accepted Answer

A) Floor rummer 
B) Hand rammer 
C) Peen rammer 
A) Floor rummer 
B) Hand rammer 
C) Peen rammer

Question 10

During the passage of molten metal through the coke, the carbon percentage of the molten metal increases. The absorption of carbon depends on

Accepted Answer

A) size of the coke 
B) temperature 
C) time allowed for molten metal to remain in the cupola 
D) all of the above 
A) size of the coke 
B) temperature 
C) time allowed for molten metal to remain in the cupola 
D) all of the above

Question 11

Thermal efficiency of cupola is in the range

Accepted Answer

A) 30 to 50 percent 
B) 60 to 75 percent 
C) 50 to 65 percent 
D) 80 to 90 percent 
A) 30 to 50 percent 
B) 60 to 75 percent 
C) 50 to 65 percent 
D) 80 to 90 percent

Question 12

Sprues are generally

Accepted Answer

A) tapered upwards 
B) tapered downwards 
C) uniform size 
A) tapered upwards 
B) tapered downwards 
C) uniform size

Question 13

The strength of the sand is high if grains are

Accepted Answer

A) round and small 
B) sharp and irregular in shape 
C) large and regular in shape 
D) none of the above 
A) round and small 
B) sharp and irregular in shape 
C) large and regular in shape 
D) none of the above

Question 14

The cross-section of a sprue

Accepted Answer

A) square 
B) circular 
C) rectangular 
D) any of the above 
A) square 
B) circular 
C) rectangular 
D) any of the above

Question 15

Which of the following metals has the lowest melting point?

Accepted Answer

A) Tin 
B) Silver 
C) Zinc 
D) Magnesium 
A) Tin 
B) Silver 
C) Zinc 
D) Magnesium

Question 16

Cores are made from core sand mixed with the binder which may be

Accepted Answer

A) linseed oil 
B) turpentine 
C) cement 
D) none of the above 
A) linseed oil 
B) turpentine 
C) cement 
D) none of the above

Question 17

Grey cast iron is

Accepted Answer

A) resistant to shock 
B) least fluid in molten condition 
C) poor in machining ability 
D) costlier than other varieties of cast iron 
A) resistant to shock 
B) least fluid in molten condition 
C) poor in machining ability 
D) costlier than other varieties of cast iron

Question 18

Hot spots are generally found in castings

Accepted Answer

A) symmetrical about two axes 
B) having abrupt variation in section 
C) with uniform cross-section 
D) small in weight but large in volume 
A) symmetrical about two axes 
B) having abrupt variation in section 
C) with uniform cross-section 
D) small in weight but large in volume

Question 19

A mould which has good erosion resistance to metal flow and is also collapsible is

Accepted Answer

A) green sand mould 
B) skin dry sand mould 
C) dry sand mould 
D) none of the above 
A) green sand mould 
B) skin dry sand mould 
C) dry sand mould 
D) none of the above

Question 20

A drawback is employed when

Accepted Answer

A) the pattern is too bulky 
B) the pattern is too long 
C) the pattern is not made of wood 
D) the pattern cannot be drawn from mould due to projection 
A) the pattern is too bulky 
B) the pattern is too long 
C) the pattern is not made of wood 
D) the pattern cannot be drawn from mould due to projection

White cst iron contains

Which of the following defect is likely to occur due to improper design of gatting system?

When bench moulding is adopted using three boxes, the central box is called

Which of the following sand must possess high refractoriness?

Carbondioxide moulding is useful for

Polystyrene is generally available in the form of

A slick is mainly used for

In furan moulding which of the following is used as a catalyst?

The rammer used for packing the sand in pockets/corners of a mould is known as

During the passage of molten metal through the coke, the carbon percentage of the molten metal increases. The absorption of carbon depends on

Thermal efficiency of cupola is in the range

Sprues are generally

The strength of the sand is high if grains are

The cross-section of a sprue

Which of the following metals has the lowest melting point?

Cores are made from core sand mixed with the binder which may be

Grey cast iron is

Hot spots are generally found in castings

A mould which has good erosion resistance to metal flow and is also collapsible is

A drawback is employed when

Foundry Processes and Materials

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

Foundry Processes and Techniques

Casting Processes and Materials

Casting and Moulding Processes: Techniques and Defects

Filters

Exam 8: Casting and Moulding Processes: Part B

White cst iron contains

Which of the following defect is likely to occur due to improper design of gatting system?

When bench moulding is adopted using three boxes, the central box is called

Which of the following sand must possess high refractoriness?

Carbondioxide moulding is useful for

Polystyrene is generally available in the form of

A slick is mainly used for

In furan moulding which of the following is used as a catalyst?

The rammer used for packing the sand in pockets/corners of a mould is known as

During the passage of molten metal through the coke, the carbon percentage of the molten metal increases. The absorption of carbon depends on

Thermal efficiency of cupola is in the range

Sprues are generally

The strength of the sand is high if grains are

The cross-section of a sprue

Which of the following metals has the lowest melting point?

Cores are made from core sand mixed with the binder which may be

Grey cast iron is

Hot spots are generally found in castings

A mould which has good erosion resistance to metal flow and is also collapsible is

A drawback is employed when

Foundry Processes and Materials

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

Foundry Processes and Techniques

Casting Processes and Materials

Casting and Moulding Processes: Techniques and Defects

Filters