Manufacturing and Industrial Engineering-Metal Casting (GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering): Questions 14 - 18 of 24

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Question number: 14

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

Appeared in Year: 2004

MCQ▾

Question

Gray cast iron blocks 200 x 100 x 10 mm are to be cast in sand moulds. Shrinkage allowance for pattern making is 1%. The ratio of the volume of pattern to that of the casting will be

Choices

Choice (4) Response

a.

0.99

b.

0.97

c.

1.03

d.

1.01

Question number: 15

» Manufacturing and Industrial Engineering » Metal Casting » Solidification and Cooling

Appeared in Year: 2012

MCQ▾

Question

In sand casting, fluidity of the molten metal increases with

Choices

Choice (4) Response

a.

increase in sand grain size

b.

decrease in pouring rate

c.

increase in degree of superheat

d.

increase in thermal conductivity of the mould

Question number: 16

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

Appeared in Year: 1992

MCQ▾

Question

In a green sand moulding process, uniform ramming leads to

Choices

Choice (4) Response

a.

Less sand expansion type of casting defect

b.

Greater dimensional stability of the casting

c.

Less chance of gas porosity

d.

Uniform flow of molten metal into the mould cavity

Question number: 17

» Manufacturing and Industrial Engineering » Metal Casting » Riser and Gating Design

Appeared in Year: 1995

MCQ▾

Question

Light impurities in the molten metal are prevented from reaching the mould cavity by providing a

Choices

Choice (4) Response

a.

Skim bob

b.

Strainer

c.

Button well

d.

All of the above

Question number: 18

» Manufacturing and Industrial Engineering » Metal Casting » Design Considerations

Appeared in Year: 2004

MCQ▾

Question

Misrun is a casting defect which occurs due to

Choices

Choice (4) Response

a.

Absorption of gases by the liquid metal

b.

Insufficient fluidity of the molten metal

c.

Very high pouring temperature of the metal

d.

Improper alignment of the mould flasks

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