Question Papers For Board Examinations 2018

Class – XII

Subject – Elementary Structural Mechanics

Subject : Elementary Structural Mechanics

Class : XII

Year : 2018

General Instructions :

Attempt any 14 questions. Each question carries 1 mark.

Questions :

SECTION A

1.For a linearly elastic, isotropic and homogeneous material, the number of elastic constants required to raise stress and strain is
(a) two
(b) three
(c) four
(d) six

2.When a metal regains its original shape when stress acting upon it is removed, the metal is said to have
(a) Ductility
(b) Plasticity
(c) Malleability
(d) Elasticity

3.The length between the supports of a Charpy impact test specimen is
(a) 60 mm
(b) 50 mm
(c) 40 mm
(d) 30 mm

4.Modulus of elasticity can be found out by the following relationship :
(a) Stress + Strain
(b) Stress – Strain
(c) Stress × Strain
(d) Stress / Strain

5.The term ‘Young’s modulus’ is used
(a) only for young persons
(b) only for old persons
(c) for young and old persons
(d) None of these

6.If a force acts on a material, it sets up some resistance to the deformation. This resistance is known as
(a) Stress
(b) Strain
(c) Elasticity
(d) Modulus of elasticity   

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Courtesy: CBSE