GATE PI format:mcq PYQs & Answers — Page 36

Questions 351–360 of 367. Imported answers require independent review unless marked reviewed.

The preparatory and miscellaneous codes used in CNC part programming and the functions are given in the Table.

Group I	Group II
P. G01	1. Circular interpolation, counter-clock wise
Q. G03	2. End of program
R. M06	3. Tool change
S. M02	4. Linear interpolation

The correct combination of code and the respective function is

Your answerChoose one option.

P – 4, Q – 1, R – 3, S – 2

P – 4, Q – 1, R – 2, S – 3

P – 1, Q – 4, R – 3, S – 2

P – 2, Q – 1, R – 3, S – 4

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The Merchant circle diagram showing values forces associated with a cutting process using a wedge-shaped tool is given in the Figure.

Diagram for Production and Industrial Engineering question 44

The coefficient of friction can be estimated from the ratio

Your answerChoose one option.

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A metallic strip having a thickness of 12 mm is to be rolled using two steel rolls, each of 800 mm diameter. It is assumed that there is no change in width of the strip during rolling. In order to achieve 10% reduction in cross-sectional area of the strip after rolling, the angle subtended (in degrees) by the deformation zone at the center of the roll is

Your answerChoose one option.

1.84

3.14

6.84

8.23

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In a machine shop, four jobs need to be assigned to four different machines. Each of the jobs is to be assigned to one machine only at a time. The time taken to complete the job in different machines is given in the Table.

Jobs / Machines	M₁	M₂	M₃	M₄
J₁	15	13	14	17
J₂	11	12	15	13
J₃	13	12	10	11
J₄	15	17	14	16

In order to ensure that the total time required to complete all the jobs is minimum, the optimal assignment of the job is

Your answerChoose one option.

J₁⇒M₄, J₂⇒M₂, J₃⇒M₃, J₄⇒M₁

J₁⇒M₂, J₂⇒M₁, J₃⇒M₄, J₄⇒M₃

J₁⇒M₂, J₂⇒M₁, J₃⇒M₃, J₄⇒M₄

J₁⇒M₄, J₂⇒M₂, J₃⇒M₁, J₄⇒M₃

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Schematic diagram of pouring basin and sprue of a gating system is shown in the Figure.

Diagram for Production and Industrial Engineering question 51

Depth of molten metal in the pouring basin is 100 mm and the height of the sprue is 1,500 mm. Considering the cross-section of the sprue is circular, the ratio

to avoid aspiration is

Your answerChoose one option.

3:2

5:6

15:16

1:2

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In a numerical control (NC) machine positioning system, the measures of precision are expressed by considering a single axis as shown in the Figure.

Diagram for Production and Industrial Engineering question 52

is standard deviation of the error distribution, then

and

are

Your answerChoose one option.

= Accuracy,

= Repeatability,

= Control resolution

= Repeatability,

= Accuracy,

= Control resolution

= Control resolution,

= Repeatability,

= Accuracy

= Accuracy,

= Control resolution,

= Repeatability

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In a gear manufacturing company, three orders P, Q and R are to be processed on a hobbing machine. The orders were received in the sequence P – Q – R. The Table indicates the process time remaining and production calendar due date for each order.

Order	Process Time Remaining (day)	Due date
P	4	Day 20
Q	16	Day 30
R	6	Day 19

Considering today as the Day 10 in the production calendar of the Hobbing Shop, the sequence of the orders scheduled using the ‘Critical Ratio’ rule is

Your answerChoose one option.

P – Q – R

P – R – Q

Q – P – R

Q – R – P

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She has a sharp tongue and it can occasionally turn __________.

Your answerChoose one option.

hurtful

left

methodical

vital

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I __________ made arrangements had I __________ informed earlier.

Your answerChoose one option.

could have, been

would have, being

had, have

had been, been

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In the summer, water consumption is known to decrease overall by 25%. A Water Board official states that in the summer household consumption decreases by 20% while other consumption increases by 70%.

Which of the following statements is correct?

Your answerChoose one option.

The ratio of household to other consumption is 8/17

The ratio of household to other consumption is 1/17

The ratio of household to other consumption is 17/8

There are errors in the official’s statement.

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GATE PI format:mcq PYQs

Question 41

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Question 58