Engineering Mechanics The energy possessed by a body, for doing work by virtue of its position, is called Potential energy Chemical energy Kinetic energy Electrical energy Potential energy Chemical energy Kinetic energy Electrical energy ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If a number of coplanar forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point. Equal to Less than Greater than None of these Equal to Less than Greater than None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a thin spherical shell of mass m and radius r, about its diameter is 2mr²/5 2mr²/3 3mr²/5 mr²/3 2mr²/5 2mr²/3 3mr²/5 mr²/3 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Which of the following statement is incorrect? A machine whose efficiency is 100% is known as an ideal machine The velocity ratio of a machine is the ratio of load lifted to the effort applied A force acting in the opposite direction to the motion of the body is called force of friction The ratio of the limiting friction to the normal reaction is called coefficient of friction A machine whose efficiency is 100% is known as an ideal machine The velocity ratio of a machine is the ratio of load lifted to the effort applied A force acting in the opposite direction to the motion of the body is called force of friction The ratio of the limiting friction to the normal reaction is called coefficient of friction ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.) P = W tan (α - φ) P = W tan (α + φ) P = W cos (α + φ) P = W tan (φ - α) P = W tan (α - φ) P = W tan (α + φ) P = W cos (α + φ) P = W tan (φ - α) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ to its acceleration. None of these Cube root Directly proportional Inversely proportional None of these Cube root Directly proportional Inversely proportional ANSWER DOWNLOAD EXAMIANS APP
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