Change in length of the rod due to change in temperature depends on…

Related MCQs

• If an axial force of 15 kN is applied to a rod of 25 mm diameter, length 300 mm, the change in length of the rod was observed to be 0.045 mm. The modulus of elasticity of the material is 200 GPa. The strain in the rod will be ____ _.
• The change in length of a rod of uniform circular cross section was found to be 2 mm for some applied force. The change in length of a rod of the same material and length but of half the diameter subjected to the same force will be Mm
• The change in length of a rod of uniform cross section was found to be 2 mm for some applied force. The change in length of a rod of the same material and length but of twice the cross section area subjected to the same force will be__ mm.
• If an axial force of 1 kN is applied to a rod of 100 mm2 cross section area, length 5 m and the modulus of elasticity of the material is 100 GPa, the change in length of the rod will be ___ .
• A steel rod of 3m length is manufactured at 250C the temperature of this rod increases to 1250C. What is the free expansion? Take E=200Gpa, α=12*10-6/0C,diameter=12mm
• Two rods A and B are subjectd to equal load P. Rod A is tapering with bigger diameter D at the support and small end diameter as D/2. Rod B is of uniform cross section with diameter D. The ratio of elongation of rod A to that of B would be
• A copper rod 15 mm diameter 0.8 m long is heated through 50?C. The expansion of the rod is prevented by gripping it at both ends. When the grips do not yield, the stress in rod is 115 N/mm2 and forces applied at the grips are 20 kN. In case one of the grip yields by 0.5 mm
• A steel rod of 3m is manufactured at 250C the temperature of rod is increases to 1250C. If free expansion is 3.6mm, what is the temperature stresses produced if 1.5mm expansion is permitted?
• the extension per unit length of the rod due to suddenly applied load as compare to same load gradually applied to same rod is
• The axially loaded composite rod shown in Fig. 1.2 has a uniform cross- sectional area of 500 mm 2 . The modulii of elasticity are Est = 200 GPa, Eal = 70 GPa and Ecu = 120 GPa. The change in length of the composite rod is mm.