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 60 50 30 80 60 50 30 80 ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The force acting on a point on the surface of a rigid body may be considered to act At the centre of gravity of the body On the periphery of the body On any point on the line of action of the force At any point on the surface normal to the line of action of the force At the centre of gravity of the body On the periphery of the body On any point on the line of action of the force At any point on the surface normal to the line of action of the force ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A stone was thrown vertically upwards from the ground with a velocity of 50 m/sec. After 5 seconds another stone was thrown vertically upwards from the same place. If both the stones strike the ground at the same time, then the velocity with which the second stone was thrown should be (Assume g = 10 m/sec²) 40 m/sec 15 m/sec 25 m/sec 50 m/sec 40 m/sec 15 m/sec 25 m/sec 50 m/sec ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The ratio of unit of force in gravitational system to that in absolute system is (where ‘g’ is acceleration due to gravity) 1 None of these g 1/g 1 None of these g 1/g ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The forces which meet at one point and have their lines of action in different planes are called Coplanar non-concurrent forces Non-coplanar concurrent forces Non-coplanar non-current forces Intersecting forces Coplanar non-concurrent forces Non-coplanar concurrent forces Non-coplanar non-current forces Intersecting forces ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The condilion for a lifting machine to be reversible is that its efficiency should be more than 66.67% more than 50% less than 50% equal to 100% more than 66.67% more than 50% less than 50% equal to 100% ANSWER DOWNLOAD EXAMIANS APP
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