Production and Industrial Engineering
GATE PI purpose:exam-prep PYQs
Build your understanding with focused practice from past exam papers.
Questions 91–100 of 650. Imported answers require independent review unless marked reviewed.
Question 26
Open questionPIMCQ1 markNeeds review
The relationship between the hoop stress
and the longitudinal stress
of a closed cylindrical thin-walled pressure vessel isYour answerChoose one option.
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Open questionPIMCQ1 markNeeds review
The starting simplex table of a linear programming problem is given below, where
,
,
and
are the slack variables. The objective of the problem isMaximize
The leaving variable among the basic variables is
Basic | | | | | | | Solution |
|---|---|---|---|---|---|---|---|
| 6 | 3 | 1 | 0 | 0 | 0 | 36 |
| 2 | 1 | 0 | 1 | 0 | 0 | 40 |
| | 3 | 0 | 0 | 1 | 0 | 2 |
| 0 | 3 | 0 | 0 | 0 | 1 | 3 |
Your answerChoose one option.
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Open questionPIMCQ1 markNeeds review
For an ideal Diesel cycle, the heat addition is an
Your answerChoose one option.
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Open questionPINAT1 markNeeds review
Three principal stresses at a point in a material are 300 MPa, 250 MPa and 100 MPa. If the yielding just starts at that point, the yield strength (in MPa) of the material as per Tresca criterion is________. (Answer in integer)
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Open questionPINAT1 markNeeds review
In an orthogonal straight turning process, the feed is 0.1 mm/rev and the depth of cut is 0.5 mm. In ASA system, the side cutting edge angle of the cutting tool is 0°. The width (in mm) of the chip is________. (Rounded off to one decimal place)
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Open questionPINAT1 markNeeds review
The pitch of the single-start lead screw of a lathe is 6 mm. It is used to cut double start thread of 3 mm pitch on a cylindrical work piece. During the thread cutting, the spindle rotates at 400 revolutions per minute (RPM). The speed (in RPM) of the lead screw is________. (Answer in integer)
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Open questionPINAT1 markNeeds review
Two options are available to meet the annual demand of batteries in a toy company. In option 1, batteries are manufactured in the plant having fixed cost of Rupees 2,00,000 and a variable cost of Rupees 70 per unit. Option 2 consists of buying batteries from the market at a price of Rupees 90 per unit. The annual demand (in number of batteries) at which the company should switch from buying to making the batteries in the plant is________. (Answer in integer)
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Open questionPINAT1 markNeeds review
A company estimates the demand of 2000 bulbs for the next year. The ordering cost is Rupees 300 per order and the annual carrying cost per bulb is Rupees 30. The economic order quantity (number of bulbs) is________. (Answer in integer)
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Open questionPINAT1 markNeeds review
While inspecting final assembly of automobile-gear-boxes, 15 features were considered critical-to-quality (CT). During last quarter, 4000 gear boxes were produced among which 1500 defects were found of the CTQ features. The defects per million opportunities (DPMO) is________. (Answer in integer)
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Open questionPINAT1 markNeeds review
The hole and the shaft dimensions (in mm) are given as
Hole dimension =
Shaft dimension =
The maximum possible clearance (in mm) is________. (Rounded off to two decimal places)
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