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STRUCTURAL MECHANICS  Quiz # STM 01

This section consists of quiz covering topics related to introductory course in Structural Mechanics/Strength of materials/Mechanics of deformable bodies.

 

	Select the most appropriate answer for the following questions.
1	If the outward normal on an area is in the positive x-direction, and the force acting on it is in the negative z-direction, the stress developed on the area will be (i) tensile stress             (ii) compressive stress             (iii) shear stress
2	A force of 40 kN is acting at an angle of 60° to an area of 4 cm2. Calculate the average shear stress on that area. (i) 5 MPa                        (ii) 50 MPa                              (iii) 0.5 MPa
3	A bolt is being used in a lap joint to connect two steel plates which are carrying a tensile force. the stress developed in the bolt will be (i) tensile                          (ii) compressive                     (iii) shear
4	The failure stress of a material was found to be 100 MPa. find the allowable stress if the factor of safety is to be 2.0 (i) 50 MPa                        (ii) 200 MPa                        (iii) 25 MPa
5	In a tensile test experiment, the length of a solid cylindrical rod increased from 50 cm to 52 cm. find the average normal strain in the rod. (i) 0.25                             (ii) 0.04                            (iii) 0.002

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