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ISRO ME Quiz 2 : Strength of Materials

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Question 1

If Poisson’s ratio for a material is 0.5, then the elastic modulus for the material is _____.

Question 2

Whirling speed of a shaft coincides with the natural frequency of its

Question 3

A bar of 20 mm dia is tested in tension. It is observed that when a load of 38 kN is applied the extension measured over a gauge length of 200 mm is 0.12 mm and contraction in diameter is 0.0036 mm. Find the Poisson’s ratio

Question 4

A Mohr’s circle reduces to a point when the body is subjected to

Question 5

One-half length of 50 mm diameter steel rod is solid while the remaining half is hollow having a bore of 25 mm. The rod is subjected to equal and opposite torque at its ends. If the maximum shear stress in solid portion is $Description: Description:ISROME2009_files\image021.png$ , the maximum shear stress in the hollow portion is

Question 6

is the deflection under the load P of a cantilever beam (length L, modulus of elasticity E, moment of inertia I). The strain energy due to bending is _______.

Question 7

A cantilever of length 2.5 m is subjected to a couple M_o at the free end. The longitudinal (normal) strain at the top surface is 0.0015 and the distance of the top surface of the cantilever from the neutral layer is 100 mm. The radius of the neutral layer is ___ meter.

Question 8

A hypothetical engineering stress-strain curve shown in the figure has three straight lines PQ, QR, RS with coordinates P(0,0), Q(0.2,100), R(0.6,140) and S(0.8,130). 'Q' is the yield point, 'R' is the UTS point and 'S' the fracture point.

The toughness of the material [in MJ/m³] is __________

Question 9

Use the area moment method to find the vertical deflection of the uniform beam AB at the following points:
(a) Middle of the beam (point O)
(b) Left end of the beam (point A)
The flexural rigidity of the beam is EI.

Question 10

If two shaft of the same length, one of which is hollow, transmit equal torque and have equal maximum stress, then they should have qual

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ESE & GATE ME Strength of Materials

Jun 4ESE & GATE ME