Manufacturing and Industrial Engineering [GATE (Graduate Aptitude Test in Engineering) Mechanical Engineering]: Questions 32 - 34 of 115

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Question 32

Manufacturing and Industrial Engineering
Design of Patterns

Appeared in Year: 2004

Question

MCQ▾

Gray cast iron blocks 200 × 100 × 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.

1.01

d.

1.03

Question 33

Manufacturing and Industrial Engineering
Structure and Properties of Engineering Materials

Appeared in Year: 2008

Question

MCQ▾

A moving average system is used for forecasting weekly demand.

F1 (t) and F2 (t) are sequences of forecasts with parameters m1 and m2,

respectively, where m1 and m2 (m1 > m2) denote the numbers of

weeks over which the moving averages are taken. The actual

demand shows a step increase from d1 to d2 at a certain time.

Subsequently,

Choices

Choice (4)Response

a.

F2 (t) will attain the value d2 before F1 (t)

b.

sequences F1 (t) and F2 (t) will reach d2 in the same period

c.

Neither F1 (t) nor F2 (t) will catch up with the value d2

d.

F1 (t) will attain the value d2 before F2 (t)

Question 34

Manufacturing and Industrial Engineering
Solidification and Cooling

Appeared in Year: 2012

Question

MCQ▾

In sand casting, fluidity of the molten metal increases with

Choices

Choice (4)Response

a.

increase in degree of superheat

b.

decrease in pouring rate

c.

increase in thermal conductivity of the mould

d.

increase in sand grain size

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