Engineering Mechanics An ideal machine is one whose efficiency is 1 Between 80 and 90% Between 60 and 70 % Between 70 and 80% 1 Between 80 and 90% Between 60 and 70 % Between 70 and 80% ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The forces which do not meet at one point and their lines of action do not lie on the same plane are known as Non-coplanar concurrent forces None of these Coplanar concurrent forces Coplanar non-concurrent forces Non-coplanar concurrent forces None of these Coplanar concurrent forces Coplanar non-concurrent forces ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics According to the law of moments, if a number of coplanar forces acting on a particle are in equilibrium, then The algebraic sum of their moments about any point in their plane is zero Their lines of action are at equal distances The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point Their algebraic sum is zero The algebraic sum of their moments about any point in their plane is zero Their lines of action are at equal distances The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point Their algebraic sum is zero ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The bodies which rebound after impact are called None of these Neither elastic nor inelastic bodies Elastic bodies Inelastic bodies None of these Neither elastic nor inelastic bodies Elastic bodies Inelastic bodies ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics In order to completely specify angular displacement by a vector, it must fix Magnitude of angular displacement Direction of the axis of rotation Sense of angular displacement All of these Magnitude of angular displacement Direction of the axis of rotation Sense of angular displacement All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a square of side a about its diagonal is a⁴/12 a²/8 a³/12 a⁴/16 a⁴/12 a²/8 a³/12 a⁴/16 ANSWER DOWNLOAD EXAMIANS APP
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