Manufacturing and Industrial Engineering (GATE Mechanical Engineering): Questions 48 - 51 of 62

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Question number: 48

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

Appeared in Year: 2010

MCQ▾

Question

During the filling process of a given sand mould cavity by molten metal through a horizontal runner of circular cross section the frictional head loss of the molten metal in the runner will increase with the

Choices

Choice (4) Response

a.

decrease in internal surface roughness of runner

b.

increase in average velocity of molten metal

c.

decrease in length of runner

d.

increase in runner diameter

Question number: 49

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

MCQ▾

Question

The hot tearing in a metal casting is due to

Choices

Choice (4) Response

a.

low coefficient of thermal expansion

b.

wide range of solidification temperature

c.

high fluidity

d.

high melt temperature

Question number: 50

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

Appeared in Year: 1999

MCQ▾

Question

Which of the following materials requires the largest shrinkage allowance, while making a pattern for casting?

Choices

Choice (4) Response

a.

Brass

b.

Cast Iron

c.

Plain Carbon Steel

d.

Aluminum

Question number: 51

» Manufacturing and Industrial Engineering » Metal Casting » Moulds

Appeared in Year: 2009

Match List-Ⅰ List-Ⅱ▾

Question

Match the following iten:
List-Ⅰ List-Ⅱ

(A)

Metallic Chaplets

(i)

Control cooling of critical sections

(B)

Exothermic Padding

(ii)

Reservoir of the molten metal

(C)

Metallic Chills

(iii)

Progressive solidification

(D)

Riser

(iv)

Support for the core

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (ii)
  • (iii)
  • (iv)
  • (i)

b.

  • (iii)
  • (ii)
  • (iv)
  • (i)

c.

  • (iv)
  • (i)
  • (iii)
  • (ii)

d.

  • (ii)
  • (i)
  • (iv)
  • (iii)

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