Metallurgical Engineering
2025 · Paper 1
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Complete GATE MT 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 64–65 of 65. Imported answers require review unless explicitly marked reviewed.
Question 64
Open questionMTNAT2 marksNeeds review
A cylindrical Al alloy billet of 300 mm diameter is hot extruded to produce a cylindrical rod of 75 mm diameter at a constant true strain rate (
) of
. The flow stress (
) of the alloy at the extrusion temperature is given by
.Assume the alloy is perfectly plastic and there is no temperature rise during the extrusion process.
The ideal plastic work of deformation per unit volume is _____
(rounded off to one decimal place).Log in to check the answer
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Open questionMTNAT2 marksNeeds review
Two consecutive estimates of the root of a function
obtained using the Newton-Raphson method are
and
, and the value of the function at
is 15.The numerical value of first derivative of the function evaluated at
is _____ (in integer).Log in to check the answer
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