Strength of Materials The coefficient of friction depends on shape of surfaces nature of surface strength of surfaces area of contact shape of surfaces nature of surface strength of surfaces area of contact ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Pick up wrong statement about friction force for dry surfaces. Friction force is proportional to velocity of sliding dependent on the materials of contact surface proportional to normal load between the surfaces independent of the area of contact surfaces proportional to velocity of sliding dependent on the materials of contact surface proportional to normal load between the surfaces independent of the area of contact surfaces ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The resultant of the following three couples 20 kg force, 0.5 m arm, + ve sense 30 kg force, 1 m arm, – ve sense 40 kg force, 0.25 m arm, + ve sense having arm of 0.5 m will be 10 kg, + ve sense 10 kg, – ve sense 20 kg, + ve sense 20 kg, – ve sense 10 kg, + ve sense 10 kg, – ve sense 20 kg, + ve sense 20 kg, – ve sense ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The algebraic sum of the resolved parts of a number of forces in a given direction is equal to the resolved part of their resultant in the same direction. This is as per the principle of resolution of forces. balance of force independence of forces forces resolution of forces. balance of force independence of forces forces ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials If a number of forces act simultaneously on a particle, it is possible To replace them by a single force through C.G. To replace them by a couple Not a replace them by a single force To replace them by a single force To replace them by a single force through C.G. To replace them by a couple Not a replace them by a single force To replace them by a single force ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The necessary condition for forces to be in equilibrium is that these should be All be equal Meet at one point Coplanar Coplanar & Meet at one point All be equal Meet at one point Coplanar Coplanar & Meet at one point ANSWER DOWNLOAD EXAMIANS APP
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