Applied Mechanics and Graphic Statics Force polygon method is applicable for A system of parallel forces only Non-concurrent coplanar force system Any coplanar force system Concurrent coplanar force system A system of parallel forces only Non-concurrent coplanar force system Any coplanar force system Concurrent coplanar force system ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics In a lifting machine with efficiency 60%, an effort of 200 N is required to raise a load of 6 kN. The velocity ratio of the machine is 50 60 80 30 50 60 80 30 ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The member forces in a statically in determinate truss Cannot be obtained by graphic statics May be obtained by graphic statics Can be obtained by graphic statics Can be obtained by graphic statics by trial and error Cannot be obtained by graphic statics May be obtained by graphic statics Can be obtained by graphic statics Can be obtained by graphic statics by trial and error ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The height at which the end of a rope of length ‘l’ should be tied so that a man pulling at the other end may have the greatest tendency to overturn the pillar, is ¾ l l/√2 ½ l 2/√3 l ¾ l l/√2 ½ l 2/√3 l ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The tension in a cable supporting a lift Is more when the lift is moving downwards Is less when the lift is moving upwards Remains constant whether its moves downwards or upwards Is less when the lift is moving downwards Is more when the lift is moving downwards Is less when the lift is moving upwards Remains constant whether its moves downwards or upwards Is less when the lift is moving downwards ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics ‘u₁’ and ‘u₂’ are the velocities of approach of two moving bodies in the same direction and their corresponding velocities of separation are ‘v₁’ and ‘v₂’. As per Newton's law of collision of elastic bodies, the coefficient of restitution (e) is given by e = v₂ - v₁/u₁ - u₂ e = v₁ - v₂/u₂ - u₁ e = u₂ - u₁/v₁ - v₂ e = v₁ - v₂/u₂ + u₁ e = v₂ - v₁/u₁ - u₂ e = v₁ - v₂/u₂ - u₁ e = u₂ - u₁/v₁ - v₂ e = v₁ - v₂/u₂ + u₁ ANSWER DOWNLOAD EXAMIANS APP
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