GATE Mechanical Engineering: Questions 65 - 68 of 68

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Question number: 65

» Manufacturing and Industrial Engineering » Metal Casting » Design of Patterns

Appeared in Year: 2011

MCQ▾

Question

A cubic casting of 50 mm side undergoes volumetric solidification shrinkage and volumetric solid contraction of 4 % and 6 % respectively. No riser is used. Assume uniform cooling in all directions. The side of the cube after solidification and contraction is

Choices

Choice (4) Response

a.

49.90 mm

b.

49.94 mm

c.

49.96 mm

d.

48.32 mm

Question number: 66

» Manufacturing and Industrial Engineering » Metal Casting » Design of Patterns

Appeared in Year: 2008

MCQ▾

Question

While cooling, a cubical casting of side 40 mm undergoes 3%, 4 % and 5 % volume shrinkage during the liquid state, phase transition and solid state, respectively. The volume of metal compensated from the riser is

Choices

Choice (4) Response

a.

7%

b.

2%

c.

8%

d.

9%

Question number: 67

» Manufacturing and Industrial Engineering » Metal Casting » Design Considerations

Appeared in Year: 2002

MCQ▾

Question

The primary purpose of a sprue in a casting mould is to

Choices

Choice (4) Response

a.

Feed the casting at a rate consistent with the rate of solidification

b.

Feed molten metal from the pouring basin to the gate

c.

Act as a reservoir for molten metal

d.

Help feed the casting until all solidification takes place

Question number: 68

» Manufacturing and Industrial Engineering » Metal Casting » Design of Patterns

Appeared in Year: 2000

MCQ▾

Question

Disposable patterns are made of

Choices

Choice (4) Response

a.

Wood

b.

Metal

c.

Rubber

d.

Polystyrene

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