_{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}]

**When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting…****Carnot cycle has maximum efficiency for****The oxygen atom is ________ times heavier than the hydrogen atom.****In the below figure, curve D represents_________.****The ratio of maximum shear stress developed in a rectangular beam and a circular beam of the same cross-sectional…****Two closely coiled helical springs 'A' and 'B' are equal in all respects but the number of turns of…****The efficiency of a Carnot engine depends on****Diesel cycle consists of __________ processes.****A closely-coiled helical spring is cut into two halves. The stiffness of the resulting spring will be****The buckling load for a given column depends upon****Within elastic limit, stress is****Two shafts 'A' and 'B' transmit the same power. The speed of shaft 'A' is 250 r.p.m. and that of shaft…****Volumetric strain for a rectangular specimen of length l, breadth b and thickness t subjected to a pull…****When coal is first dried and then crushed to a fine powder by pulverising machine, the resulting fuel…****The efficiency of Carnot cycle depends upon****The behaviour of super-heated vapour is similar to that of****After reaching the yielding stage while testing a mild steel specimen, strain****The capacity of a strained body for doing work on the removal of the straining force, is called****Which of the following cycles is not a reversible cycle?****According to Avogadro's law****A key is subjected to side pressure as well at shearing forces. These pressures are called****According to Kelvin-Planck's statement of second law of thermodynamics,****When a body is subjected to a direct tensile stress (σx) in one plane accompanied by a simple shear…****For a beam, as shown in the below figure, when the load W is applied in the centre of the beam, the…****The pull required to crush the rivet per pitch length is****A shaft revolving at ω rad/s transmits torque (T) in Nm. The power developed is****A process of heating crude oil to a high temperature under a very high pressure to increase the yield…****When both ends of a column are fixed, the effective length is****Reversed joule cycle is called****If percentage reduction in area of a certain specimen made of material 'A' under tensile test is 60%…**