ISRO 2018 S.O.M Booster Quiz 1

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Question 1

A thin gas cylinder of internal pressure 8 MPa having the inner diameter of 800 mm and thickness of 32 mm. The average circumferential stress (in MPa) is _____.

• A113
• B100
• C543
• D210

Question 2

For the two dimensional stress system given in the figure, the one dimensional stress to produce same maximum strain will be equal to _________N/mm².

• A40
• B90
• C70
• D114

Question 3

For the plane stress situation shown in the figure, the maximum shear stress and the plane on which it acts are

• A–50 MPa, on a plane 45 ° clockwise w.r.t. x-axis
• B–50 MPa, on a plane 45 ° anti-clockwise w.r.t. x-axis
• C50 MPa, at all orientations
• DZero, at all orientations

Question 4

The ratio of vertical reactions at support A and B of the simply supported beam in the figure shown below is .

• A1:2
• B4:3
• C1:1
• D3:4

Question 5

A shaft subjected to torsion experience a pure shear stress τ on the surface. The maximum principal stress on the surface which is at 45° to the axis has a value

• Aτ cos 45 °
• B2τ cos 45 °
• Cτ cos² 45 °
• Dτ

Question 6

A circular shaft subjected to a twisting moment results in maximum shear stress of 60 MPa. Then the maximum compressive stress in the material is _________ N/mm².

• A50
• B60
• C70
• D80

Question 7

If,
A = Cross sectional area
E = Young’s modulus of elasticity
G = Modulus of rigidity
J = Polar moment of inertia
Then Torsional rigidity is given by,

• AAE
• BGE
• CEI
• DGJ

Question 8

The values of axial stress (σ) in kN/m², bending moment (M) in kNm, and shear force (V) in kN acting at point P in the beam (area of cross section 0.04 m²) for the arrangement shown in the figure are respectively.

• A1000, 75 and 25
• B1250, 150 and 50
• C1500, 225 and 75
• D1750, 300 and 100

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