See Our team
Wondering how we keep quality?
Got unsolved questions? Ask Questions
An isolated concrete pavement slab of length L is resting on a frictionless base. The temperature of the top and bottom fibre of the slab are Tt and Tb, respectively. Given: the coefficient of thermal expansion = α and the elastic modulus = E. Assuming Tt > Tb and the unit weight of concrete as zero, the maximum thermal stress is calculated as0 AnswerTie bars of 12 mm diameter are to be provided in a concrete pavement slab. The working tensile stress of the tie bars is 230 MPa, the average bond strength between a tie bar and concrete is 2 MPa, and the joint gap between the slabs is 10 mm.0 AnswerA steel rod is fixed at one end and free at the other end. The coefficient of thermal expansion of the steel is α, and modulus of elasticity is E. If the temperature of the rod is increased by Δ then the stress and strain developed in the rod are respectively1 AnswerThree slabs are joined together as shown in the figure. There is no thermal contact resistance at the interfaces. The center slab experiences a non-uniform internal heat generation with an average value equal to 10000 Wm−3 , while the left and right slabs have no internal heat generation. All slabs have thickness equal to 1 m and thermal conductivity of each slab is equal to 5 Wm−1K −1 . The two extreme faces are exposed to fluid with heat transfer coefficient 100 Wm−2 K −1 and bulk temperature 30 oC as shown. The heat transfer in the slabs is assumed to be one dimensional and steady, and all properties are constant. If the left extreme face temperature T1 is measured to be 100 oC, the right extreme face temperature T2 is ___________oC.0 AnswerA solid cube of side 1 m is kept at a room temperature of 32 C. The coefficient of linear thermal expansion of the cube material is 5 1 10 / C and the bulk modulus is 200 GPa. If the cube is constrained all around and heated uniformly to 42 C, then the magnitude of volumetric (mean) stress (in MPa) induced due to heating is____0 AnswerA s shown in schematic below, an alloy is cast as a rectangular slab between two thick mould walls that differ in their thermal conductivities. Shrinkage defects are found at a distance L1 from Mould-1 with thermal conductivity 𝑘1 and distance L2 from Mould-2 with thermal conductivity 𝑘2. If the ratio L1:L2 = 3:2, and assuming 1-D heat transfer, the ratio ( 𝑘1 𝑘2 ⁄ ) is ________ (to two decimal places)1 AnswerConsider a prismatic straight beam of length L = π m, pinned at the two ends as shown in the figure. The beam has a square cross-section of side p = 6 mm. The Young’s modulus E = 200 GPa, and the coefficient of thermal expansion α = 3 × 10−6 K −1 . The minimum temperature rise required to cause Euler buckling of the beam is ________ K.0 Answer Using limit state method and neglecting the self weight of base plate and steel column, the length of a side of the base plate to be provided is (GATE-CIVIL-Engg-2018)1 AnswerThe maximum possible reduction (in mm, rounded off to one decimal place) of a 100 mm thick slab during rolling is _________. Given: The coefficient of friction between roll and the slab is 0.2, and the roll diameter is 200 mm.0 AnswerIn an air blast freezing operation, a flat tray of 1.0 m×1.0 m×0.02 m dimensions is used to freeze filled depodded peas. Bulk density and moisture content of peas are 550 kg m-3 and 85% (w.b.), respectively. Latent heat of freezing from water to ice at -1 oC is 335 kJ kg-1 and heat transfer occurs identically from the top and the bottom surfaces of the tray. Convective film heat transfer coefficient on the heat transfer surfaces of the tray is 30 W m-2 K -1 and the thermal conductivity of frozen peas is 0.54 W m-1 K -1 . Assuming the tray to be a semi-infinite slab, the freezing time (in minutes) to completely freeze the product (rounded off to one decimal place) is__________.0 AnswerA glass fibre of 5 micron diameter is subjected to a tensile stress of 20 MPa. The surface energy and elastic modulus of this material are 0.3 Jm2 and 70 GPa, respectively. Pick the correct answer based on the information provided above: Note: The glass fibre contains a population of flaws of different lengths.1 AnswerAs shown in the figure, a rigid slab CD of weight W (distributed uniformly along its length) is hung from a ceiling using three cables of identical length and cross-sectional area. The central cable is made of steel (Young’s modulus = 3E) and the other two cables are made of aluminium (Young’s modulus = E). The percentage of the total weight taken by the central cable is ______ % (round off to the nearest integer).0 AnswerThe heat flow through a unit area of the Earth’s surface is given by the product of: (-Gate geology and geophysics 2014)1 AnswerWhen a specimen of M25 concrete is loaded to a stress level of 12.5 MPa, a strain of 500×106 is recorded. If this load is allowed to stand for a long time, the strain increases to 1000×106 .0 AnswerA plane slab of thickness L and thermal conductivity k is heated with a fluid on one side (P), and the other side (Q) is maintained at a constant temperature, TQ of 25C, as shown in the figure. (Gate 2018 Mechanical engineering) 0 AnswerT he theoretical limit coefficient of variation (Vr in %) of the weight per unit length of cotton sliver is 𝑉𝑟 = 106/√𝑁, where N is the average number of fibres present in the crosssection of the sliver. To derive this expression, the coefficient of variation (in %) of the fibre weight per unit length, accurate to two decimal places, is considered as ______________0 Answerwhere will be the reinforcement of slab placed when there is an inverted beam and the bottom of the beam and slab are at same level ?1 AnswerA slender rod of length L, diameter d ( L >>d ) and thermal conductivity 1 k is joined with another rod of identical dimensions, but of thermal conductivity 2 k , to form a composite cylindrical rod of length 2L . The heat transfer in radial direction and contact resistance are negligible. The effective thermal conductivity of the composite rod is0 AnswerThe hot tearing in a metal casting is due to: (Gate mechanical 2014 question paper)1 AnswerConsider an elastic straight beam of length L = 10 π m, with square cross-section of side a = 5 mm, and Young’s modulus E = 200 GPa. This straight beam was bent in such a way that the two ends meet, to form a circle of mean radius R. Assuming that Euler-Bernoulli beam theory is applicable to this bending problem, the maximum tensile bending stress in the bent beam is __________ MPa.0 Answer
CE 2041 BRIDGE STRUCTURES CE2306 DESIGN OF RC ELEMENTS CE 2042 STORAGE STRUCTURES10cv81VTU SYLLABUS 2010 STRENGTH OF MATERIALS (COMMON TO CV/TR/EV/CTM) [10CV33] Engineering.CE2307 CONCRETE AND HIGHWAY ENGINEERING LAB CE 2071 REPAIR AND REHABILITATION OF STRUCTURESCE 2032 PAVEMENT ENGINEERINGCE 2404 PRESTRESSED CONCRETE STRUCTURE10me34 Mechanics of materials