Engineering Mechanics The centre of percussion is below the centre of gravity of the body and is at a distance equal to h × kG kG2/h h2/kG h/kG h × kG kG2/h h2/kG h/kG ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act Perpendicular to the wall at its upper end Downward at its upper end Zero at its upper end Upward at its upper end Perpendicular to the wall at its upper end Downward at its upper end Zero at its upper end Upward at its upper end ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.) tan(α - φ)/tanα None of these tan(α + φ)/tanα tanα/tan (α + φ) tan(α - φ)/tanα None of these tan(α + φ)/tanα tanα/tan (α + φ) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The center of gravity of a semi-circle lies at a distance of __________ from its base measured along the vertical radius. 3r/ 8 3r/4π 8r/3 4r/ 3π 3r/ 8 3r/4π 8r/3 4r/ 3π ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The forces which meet at one point, but their lines of action __________ on the same plane, are Known as non-coplanar concurrent forces. Do not lie None of these Either A or B Lie Do not lie None of these Either A or B Lie ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.) 2π × ω π/ω 2π/ω ω/2π 2π × ω π/ω 2π/ω ω/2π ANSWER DOWNLOAD EXAMIANS APP
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