_{x} + σ_{y})/2 + (1/2) × √[(σ_{x} - σ_{y})² + 4 τ²_{xy}]

_{x} + σ_{y})/2 - (1/2) × √[(σ_{x} - σ_{y})² + 4 τ²_{xy}]

_{x} - σ_{y})/2 + (1/2) × √[(σ_{x} + σ_{y})² + 4 τ²_{xy}]

_{x} - σ_{y})/2 - (1/2) × √[(σ_{x} + σ_{y})² + 4 τ²_{xy}]

**Volumetric strain for a rectangular specimen of length l, breadth b and thickness t subjected to a pull…****The following cycle is used for air craft refrigeration****When a thin cylindrical shell is subjected to an internal pressure, the volumetric strain is (where…****Euler's formula holds good only for****Which of the following statement is incorrect?****The ultimate analysis of coal consists of the determination of the percentage of****The given figure shows the Mohr's circle of stress for two unequal and like principal stresses (σx…****Strain re-setters are used to****One kg of carbon produces __________ kg of carbon dioxide.****The state of a substance whose evaporation from its liquid state is complete, is known as****The percentage reduction in area of a cast iron specimen during tensile test would be of the order of****The buckling load for a given material depends on****The universal gas constant (or molar constant) of a gas is the product of****The oxygen atom is ________ times heavier than the hydrogen atom.****The specific heat at constant volume is****The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ =…****The ratio of specific heat at constant pressure (cp) and specific heat at constant volume (cv) is always…****A cube subjected to three mutually perpendicular stress of equal intensity p expenses a volumetric strain****The layer at the centre of gravity of the beam as shown in the below figure, will be****The efficiency of Diesel cycle approaches to Otto cycle efficiency when****Impact strength of a material is an index of its****Which of the following is correct?****Flow stress corresponds to****If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling…****The fuel mostly used in steam boilers is****A composite shaft consisting of two stepped portions having spring constants K₁ and K₂…****The deformation per unit length is called****An open system is one in which****In the torsion equation T/J = τ/r = Gθ/ L, the term J/R is called****Which of the following statement is correct according to Clausis statement of second law of thermodynamics?**