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VSSC Technical Assistant Mechanical Paper 2012
Vikram Sarabhai Space Centre Technical Assistant Mechanical Paper 2012
| 1 | Which of the following is a proper sequence?
(a) Proportinal limit, elastic limit, yielding, failure (b) Elastic limit, proportional limit, yielding, failure (c) Yielding, proportional limit, elastic limit, failure (d) None of these |
| 2 | A bar of length L meters extends by l mm under a tensile force of P. The strain produced in the bar is –
(a) l/L (b) 0.1 l/L (c) 0.01 l/L (d) 0.001 l/L |
| 3 | When a body is subjected to three mutually perpendicular stresses of equal intensity, the ratio of direct stress to the corresponding volumetric strain is known as –
(a) Young’s Modulus (b) Modulus of Rigidity (c) Bulk Modulus (d) Poisson’s ratio |
| 4 | A body is subjected to direct tensile stress in one plane. The shear stress is maximum at a section inclined at ______ to the normal of the section
(a) 45 & 90 degree (b) 45 & 135 degree (c) 60 & 150 degree (d) 30 & 135 degree |
| 5 | In a riveted lap joint, which one is not a failure mode?
(a) Tearing failure of plate (b) Bearing failure of plate (c) Shearing failure of plate (d) Tensile failure of rivet |
| 6 | Stress concentratin factor is defined as the ratio of –
(a) maximum stress to the endurance limit (b) nominal stress to the endurance limit (c) maximum stress to the nominal stress (d) nominal stress to the maximum stress |
| 7 | Which of the beams develop thermal stresses on heating?
(a) Simply supported (b) cantilever (c) Fixed (d) None of these |
| 8 | The property of a liquid which offers resistance to the movement of one layer of liquid over another ajacent layer of liquid is called
(a) Surface tension (b) Compressibility (c) Capillarity (d) Visocity |
| 9 | When a liquid is flowing through a pipe, the velocity of the liquid is
(a) Maximum at the centre and minimum near the walls (b) Minimum at the centre and maximum near the walls (c) zero at the centre and maximum near the walls (d) Same at the centre and near the walls |
| 10 | The imaginary line drawn in the fluid in such a way that the tangent to any point gives the direction of motion at the point is known as –
(a) Path line (b) Stream line (c) Steak Line (d) Potential line |
Last Updated on – 7th April 2022
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