Engineering Mechanics Which of the following statement is incorrect? A machine whose efficiency is 100% is known as an ideal machine The ratio of the limiting friction to the normal reaction is called coefficient of friction A force acting in the opposite direction to the motion of the body is called force of friction The velocity ratio of a machine is the ratio of load lifted to the effort applied A machine whose efficiency is 100% is known as an ideal machine The ratio of the limiting friction to the normal reaction is called coefficient of friction A force acting in the opposite direction to the motion of the body is called force of friction The velocity ratio of a machine is the ratio of load lifted to the effort applied ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The periodic time of a particle with simple harmonic motion is _________ proportional to the angular velocity. Directly Square root None of these Inversely Directly Square root None of these Inversely ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is g/3 g/4 None of these g/2 g/3 g/4 None of these g/2 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The centre of percussion is below the centre of gravity of the body and is at a distance equal to h/kG h × kG kG2/h h2/kG h/kG h × kG kG2/h h2/kG ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Non-coplanar non-concurrent forces are those forces which None of these 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 Do not meet at one point but their lines of action lie on the same plane None of these 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 Do not meet at one point but their lines of action lie on the same plane ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics In order to double the period of simple pendulum, the length of the string should be Halved Quadrupled Doubled None of these Halved Quadrupled Doubled None of these ANSWER DOWNLOAD EXAMIANS APP
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