Theory of Machine The frictional torque transmitted in a flat pivot bearing, assuming uniform wear, is(Where μ = Coefficient of friction, W=Load over the bearing, R=Radius of bearing) ¾μWR ²/₃ μWR ½μWR μwr ¾μWR ²/₃ μWR ½μWR μwr ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine Lower pairs are those which have Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Two elements that permit relative motion Elements of pairs not held together mechanically Surface contact between the two elements when in motion Point or line contact between the two elements when in motion Two elements that permit relative motion Elements of pairs not held together mechanically ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine When a rigid body is suspended vertically and it oscillates with a small amplitude under the action of the force of gravity, the body is known as Compound pendulum Simple pendulum Second's pendulum Torsional pendulum Compound pendulum Simple pendulum Second's pendulum Torsional pendulum ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine The efficiency of a screw jack is maximum, when (where α = Helix angle, and φ = Angle of friction) α = 90° - φ α = 45° + φ/2 α = 45° - φ/2 α = 90° + φ α = 90° - φ α = 45° + φ/2 α = 45° - φ/2 α = 90° + φ ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, then energy stored in the latter at the same speed will be Same as the first one Four times the first one One fourth of the first one One and a half times the first one Same as the first one Four times the first one One fourth of the first one One and a half times the first one ANSWER DOWNLOAD EXAMIANS APP
Theory of Machine What is the number of instantaneous centers for an eight link mechanism? 28 8 30 15 28 8 30 15 ANSWER DOWNLOAD EXAMIANS APP
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