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GATE Prev Year : Mechanics of Materials Test-3

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Question 1

In an interchangeable assembly, shafts or size mate with holes of size The maximum interference (in microns) in the assembly is

Question 2

A long thin walled cylindrical shell, closed at both the ends, is subjected to an internal pressure. The ratio of the hoop stress (circumferential stress) to longitudinal stress developed in the shell is

Question 3

A 200 mm long, stress free rod at room temperature is held between two immovable rigid walls. The temperature of the rod is uniformly raised by 250 °C. If the Young's modulus and coefficient of thermal expansion are 200 GPa and Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\GATE-ME-2014-Set-1_files\image133.png, respectively, the magnitude of the longitudinal stress (in MPa) developed in the rod

is _______

Question 4

Diamond Pyramid Hardness is related to __________.

Question 5

A 1.5 mm thick sheet is subject to unequal biaxial stretching and the true strains in the directions of stretching are 0.05 and 0.09. The final thickness of the sheet in mm is

Question 6

Calculate the punch size in mm, for a circular blanking operation for which details are given below
Size of the blank 25 mm
Thickness of the sheet 2 mm
Radial clearance between punch and die 0.06 mm
Die allowance 0.05 mm

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Jul 17ESE & GATE ME