Vikram Sarabhai Space Centre Scientist/ Engineer SC Structural Engineering Paper 2015
Machine Design/ Applied Mechanics Paper 2015
| 1 | Brittle fracture is more dangerous than ductile fracture because
(a) crack propagates very fast (b) no warning sign (c) no additional stress needed for crack growth (d) All of the above |
| 2 | The Poisson’s ratio of cork is
(a) 0.5 (b) 1 (c) 0 (d) 0.3 |
| 3 | A single degree of freedom system with a spring of stiffness 100 units and mass 25 units. Find the first natural frequency of the system in Hz
(a) 22/7 (b) 7/22 (c) 44/7 (d) 88/7 |
| 4 | When a body is subjected to transverse vibration the stress induced in the body will be
(a) Shear stress (b) Tensile stress (c) Bending stress (d) None of the above |
| 5 | Finite element method is _______ procedure for analyzing structures and continuum.
(a) Analytical method (b) Numerical method (c) Empirical method (d) Graphical method |
| 6 | A satellite in orbit is stressed due to
(a) Centrifugal force (b) Centripetal force (c) Both of the above (d) None of these |
| 7 | In a general three dimensional stressed element, the number of components stress are
(a) 3 (b) 4 (c) 6 (d) 9 |
| 8 | Principle of superposition is valid for
(a) Linear systems (b) Material non-linear systems (c) Geometric non-linear systems (d) All of the above |
| 9 | In a hole based tolerance system, the upper tolerance of a hole is
(a) positive (b) zero (c) negative (d) any of the above |
| 10 | In descending order of Young’s modulus which one is true?
(a) Steel, Titanium, Aluminium (b) Aluminium, Steel, Titanium (c) Titanium, Steel, Aluminium (d) Steel, Aluminium, Titanium |
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