Engineering Mechanics A screw jack used for lifting the loads is An ideal machine A reversible machine A non-reversible machine None of these An ideal machine A reversible machine A non-reversible machine None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Coplanar concurrent forces are those forces which Meet at one point, but their lines of action do not lie on the same plane Do not meet at one point and their lines of action do not lie on the same plane Meet at one point and their lines of action also lie on the same plane Do not meet at one point, but their lines of action lie on the same plane Meet at one point, but their lines of action do not lie on the same plane Do not meet at one point and their lines of action do not lie on the same plane Meet at one point and their lines of action also lie on the same plane Do not meet at one point, but their lines of action lie on the same plane ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The term 'Centroid' is The same as centre of gravity The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis The point of suspension None of the listed here The same as centre of gravity The point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis The point of suspension None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.) P = W cos (α + φ) P = W tan (α + φ) P = W tan (α - φ) P = W tan (φ - α) P = W cos (α + φ) P = W tan (α + φ) P = W tan (α - φ) P = W tan (φ - α) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the width (b), is bd³/12 db³/12 db³/36 bd³/36 bd³/12 db³/12 db³/36 bd³/36 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A differential pulley block has larger and smaller diameters of 100 mm and 80 mm respectively. Its velocity ratio is 40 10 20 5 40 10 20 5 ANSWER DOWNLOAD EXAMIANS APP
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