Production and Industrial Engineering
2023 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE PI 2023 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 34–36 of 65. Imported answers require review unless explicitly marked reviewed.
Question 34
Open questionPINAT1 markNeeds review
Two metal sheets are joined using resistance spot welding. A weld current of 4500 A is applied for 0.2 s. The effective contact resistance at the sheet interface is
. The thermal efficiency of the weld process is 50 %. The amount of heat, in J, used for producing a spot weld is _____(in integer).Log in to check the answer
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Open questionPINAT1 markNeeds review
A metal rod of diameter 14 mm is subjected to a tensile test. After the test, its cross-section diameter at the fractured end is 12 mm. The ductility, in % , is _____ (round off to 2 decimal places).
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Open questionPIMCQ2 marksNeeds review
Given,
, where
and
. All the variables are real. The total differential
isYour answerChoose one option.
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