Production and Industrial Engineering
GATE PI discipline:mechanical-and-production-engineering PYQs
Build your understanding with focused practice from past exam papers.
Questions 241–250 of 650. Imported answers require independent review unless marked reviewed.
Question 46
Open questionPIMCQ2 marksNeeds review
As per the Fe-C phase diagram, the microstructure of plain carbon steel with 0.4 wt.% carbon at room temperature contains
Your answerChoose one option.
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Open questionPIMCQ2 marksNeeds review
The most appropriate process for manufacturing of plastic chair is
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Open questionPINAT2 marksNeeds review
The following equation is solved using Newton-Raphson method
with initial value
.The value of first approximation
is _____ (round off to 2 decimal places).Log in to check the answer
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Open questionPINAT2 marksNeeds review
For the matrix
, eigenvalue corresponding to the eigenvector
is _____ (in integer).Log in to check the answer
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Open questionPINAT2 marksNeeds review
The work sampling study, with 100 observations, revealed 25 % idle time of a worker. The number of observations required for ±10 % accuracy and 95.45 % confidence level is _____ (in integer).
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Open questionPINAT2 marksNeeds review
The information of two products P and Q is given as
Product | Annual demand (units) | Order cost per order (Rupees) | Holding cost per unit per year (Rupees) |
|---|---|---|---|
P | 2500 | 60 | 30 |
Q | 3600 | 80 | 40 |
The value of
is _____ (round off to 2 decimal places).Log in to check the answer
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Open questionPINAT2 marksNeeds review
A system shown in figure has seven components with reliabilities
,
,
,
,
,
,
. The reliability of the system is _____ (round off to 2 decimal places).
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Open questionPINAT2 marksNeeds review
Details of activities of a project are given as
Activity | A | B | C | D | E | F | G | H | I | J |
|---|---|---|---|---|---|---|---|---|---|---|
Time (days) | 8 | 10 | 8 | 7 | 16 | 15 | 18 | 14 | 9 | 4 |
Predecessors | - | - | - | A | A | B, D | C | C | F, G | E, I, H |
The time required, in days, to complete the project along the critical path is _____ (in integer).
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Open questionPINAT2 marksNeeds review
A system has 10 essential components. Each component has an exponential time-to-failure distribution with constant failure rate of 0.04 per 4000 hours. The mean-time-to-failure, in hours, of the system is _____ (in integer).
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Open questionPINAT2 marksNeeds review
A CNC water jet cutting machine is used to cut a straight slot between the points (2, 1) and (10, 10) on the XY plane (dimensions are in mm). If the feed rate is 1.5 mm/s, the time, in s, required to machine the slot following the shortest path, is _____ (round off to 2 decimal places).
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