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WorksheetsModule 1 Simple stresses and basics
Total questions: 10
Worksheet time: 5mins
MATCH THE FOLLOWING
1.Elongation of a bar due to its self-weight is computed by A. 1/2 (Force × Elongation
2.Poisson ratio is defined as B. 1/2 YS^2
3.The work done in stretching a wire is_______. C. Lateral strain divided by longitudinal strain
4.Which of the following expressions represents the energy stored in a stretched wire? D.WL/2AE
1 --->C , 2---> B , 3--->D, 4--->A
1 --->D ,2 --->C , 3--->A , 4---> B
1 ---> C ,2 --->A ,3---> D , 4 --->A
1 --->D ,2 --->A ,3 --->C , 4--->B
Calculate the modulus of resilience for a 2m long bar which extends 2mm under limiting axial stress of 200 N/mm2?
0.01
0.1
1
1.1
The Poissons ratio of a material is 0.3. what will be the ratio of Youngs modulus to bulk modulus
1.4
1.2
1
0.8
A rigid-jointed plane frame is stable and statically determinate if -
(m + r) = 3j
(3m + r) = 3j
(m + 3r) = 3j
(m -3r) = 3j
Match the following
1.relationship between modulus of elasticity and modulus of rigidity A. (3K – 2G) / (6K + 2G) 2.Poissons ratio be expressed in terms of bulk modulus(K) and modulus of rigidity(G)? B. E = 9KC / (3K + C)
3.relationship between Youngs modulus E, modulus of rigidity C, and bulk modulus K? C. C = 2E / (1 + μ)
4.RELATION BETWEEN YOUNGS MODULUS AND BULK MODULUS D. E=3K(1-2 μ) AA
1--->C , 2--->B ,3--->C, 4--->D
1--->B , 2--->C ,3--->D, 4--->A
1--->C , 2--->A ,3--->D, 4--->C
1--->C , 2--->A ,3--->B, 4--->D
The stress-strain diagram for two materials A and B is shown
below: The following statements are made based on this diagram:
I. Material A is more brittle than material B.
II. The ultimate strength of material B is more than that of A.
With reference to the above statements, which of the following applies?
Material A is more brittle than material B.
Both the statements are true.
I is true but II is false.
I is false but II is true.
What will be the shear modulus of the material with elastic modulus of 240 GPa and Poisson's ratio is 0.2?
80
100
120
90
The room-temperature stress (σ) -strain (ϵ) curves of four materials P, Q, R, and S are shown in the figure below. The material that behaves as a rigid perfectly plastic material is
P
Q
S
R
An axial pull of 35000 N is acting on a bar consisting of two lengths as shown with their respective dimensions. What will be the stresses in the two sections respectively in N/mm2?
111.408 and 49.5146
111.408 and 17.85
97.465 and 49.5146
97.465 and 34.263
For a material, Youngs modulus is given as 1.2 x 105 and Poissons ratio 1/4. Calculate the bulk modulus.
0.7 x 105
1.2 x 105
0.8 x 105
0.11
