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# Casting Processes - 3

## 30 Questions MCQ Test Topicwise Question Bank for GATE Mechanical Engineering | Casting Processes - 3

Description
This mock test of Casting Processes - 3 for Mechanical Engineering helps you for every Mechanical Engineering entrance exam. This contains 30 Multiple Choice Questions for Mechanical Engineering Casting Processes - 3 (mcq) to study with solutions a complete question bank. The solved questions answers in this Casting Processes - 3 quiz give you a good mix of easy questions and tough questions. Mechanical Engineering students definitely take this Casting Processes - 3 exercise for a better result in the exam. You can find other Casting Processes - 3 extra questions, long questions & short questions for Mechanical Engineering on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### Which of the following materials requires highest shrinkage allowance?

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QUESTION: 4

Chills are used in casting moulds to

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QUESTION: 5

Directional solidification can be achieved by providing

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QUESTION: 6

Chaplets are used in mould for

Solution:

Chaplets are used to support the core inside the mould cavity, take care of its own weight and overcome the metallostatic forces.

QUESTION: 7

The casting defect which is not caused by the high pouring temperature of melt is

Solution:

Metal penetration is not caused due to high pouring temperature. It caused due to improper ramming of sand.

QUESTION: 8

Fluidity is greatly influenced by

Solution:

Fluidity can be defined as the length of spiral covered by the molten metal before it get solidifies.
Fluidity is the function of temperature, higher the temperature, more will be the fluidity.

QUESTION: 9

Which of the following materials has more shrinkage allowances

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QUESTION: 10

The two parts of a sand casting mould are called

Solution:

Cope and drag are two parts of the casting mould.
Upper part is called cope and lower part is called drag.

QUESTION: 11

While pouring molten metal in the mould of the molten metal does not appear in the riser. It indicates

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QUESTION: 12

In solidification of metal during casting, compensation for solid contraction is

Solution:

Liquid shrinkage and shrinkage during phase change is provided by riser and solid shrinkage can be compensated by providing allowances over the pattern.

QUESTION: 13

Which of the following casting mould uses metal moulds?

Solution:

In die casting some permanent mould is used which may be made of metal.

QUESTION: 14

What is the purpose of inoculation

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QUESTION: 15

Cores are used in the casting to

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QUESTION: 16

Misrun is a casting defect which occur due to

Solution:

Misrun is a casting defect caused due to insufficient fluidity of molten metal.

QUESTION: 17

Scab is a

Solution:

Scab is sand casting defect caused due to improper ramming of moulding sand.

QUESTION: 18

An improper riser may give rise to a defect called

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QUESTION: 19

The casting defect caused by the erosion of sand

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QUESTION: 20

The purpose of gate is to

Solution:

Gate is the opening through which the molten metal enters the mould cavity. The shape and the cross section of the ingot should be such that it can readily be broken off after casting solidification and also allow the molten metal to enter quietly into the mould cavity.

QUESTION: 21

The purpose of riser is to

Solution:

To compensate for metal shrinkage during solidification, extra molten metal is stored in suitable location of the mould, which provides a supply of hot metal as the casting cools, this opening is called riser.

QUESTION: 22

The casting method adopted for ornament toys of nonferrous alloys is

Solution:

Slush casting is used to produce ornament, small toys etc.

QUESTION: 23

Sprue in casting refers to

Solution:

hence sprue is a vertical passage in the parting plane through which molten metal from the pouring basin reaches the mould cavity.

QUESTION: 24

Bottom gating system is sometimes preferred in casting because

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QUESTION: 25

Which one of the following processes produces a casting when pressure forces the molten metal into the mould cavity.

Solution:

Die casting are of two types:
1. Pressure die casting
2. Gravity die casting
In pressure die casting the molten metal is pressurized to enter into the mould while in case of gravity die casting molten metal fined into the mould by means of gravitational force.

QUESTION: 26

In a green sand moulding process, uniform ramming leads to

Solution:

In the green sand moulding process due to improper raming of moulding sand defects like sand expansion, metal penetration, run out etc. are generated.

QUESTION: 27

Which of the following are the most likely characteristics in centrifugal casting?

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QUESTION: 28

The centrifugal casting method is used for casting articles of

Solution:

In centrifugal casting mould in rotated about horizontal axis.

QUESTION: 29

The impurities in true centrifugal casting

Solution:

Since impurities are lighter than the metal hence they get collected at the inner surface of the casting.

QUESTION: 30

Consider the following ingredients used in moulding
1. Dry silica sand
2. Clay
3. Phenol formaldehyde
4. Sodium silicate
Q. These used for shell moulding include

Solution: