The length, coefficient of thermal expansion and Youngs modulus of bar A are twice of bar B. If the temperature of both bars is increased by the same amount while preventing any expansion, then the ratio of stress developed in bar A to that in bar B will be:

Q: The elongation of a bar in axial loading is proportional to the following except A Stress in the bar…

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Q: why is P positive for stress A

A: The compressive stress is considered as positive and tensile stress is considered as negative.

Q: 3 MPa. Which of the following describes the stress state? A body is subjected to the following…

A: in question stress in various plane is given:  question is asking about stress state: given: SIGMAxx…

Q: The state of stress at a point in a member is shown in A 0x' = 60° σ y B on the element. Assume ox…

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Q: Example: the low cycle fatigue of a certain steel is given by life cycle equation-2: (of/E)=0.005…

A: The fatigue strength of steel /Modulus of elasticity(E), The fatigue Ductility coefficient is, The…

Q: An assembly of a material consists of a brass shell fully bonded to a ceramic core. The brass shell…

A:

Q: Fc FA Fa Fc

A: According to given data Fa , Fb , Fc principal stresses are shown in three elements  We need to…

Q: A steel bar is held by two fixed supports as shown in the figure and is subjected to an increase of…

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Q: A steel rod 15 m long is at a temperature of 15°C. The values of a = 12x10-6/°C and E=200GN/m² are…

A: Given- Length of the rod L=15 m, Temperature raised from 15 degrees to 65 degrees. Coefficient of…

Q: A 0.35-m long steel rod with a round cross-section (25 mm) is resting on a frictionless surface. The…

A: The given data is: Length of steel rod (L) = 0.35 m Diameter of steel rod (d) = 25 mm Coefficient of…

Temperature Difference and Heat Transfer

Whenever there is a flow of heat flux resulting from a temperature gradient within the material or between two materials, there is heat transfer. Heat transfer primarily arises due to temperature differences between two bodies or within bodies. The term temperature gradient denotes temperature differences or variation of temperature due to change in some quantity. The fundamental use of the concept of temperature is found in the zeroth law of thermodynamics.