Strength of Materials Pick up wrong statement about friction force for dry surfaces. Friction force is independent of the area of contact surfaces proportional to normal load between the surfaces dependent on the materials of contact surface proportional to velocity of sliding independent of the area of contact surfaces proportional to normal load between the surfaces dependent on the materials of contact surface proportional to velocity of sliding ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The effort required to lift a load W on a screw jack with helix angle a and angle of friction Wcos(a + ) Wtan(a + <)>) Wtan(a-<)>) Wsin(a + <(>) Wcos(a + ) Wtan(a + <)>) Wtan(a-<)>) Wsin(a + <(>) ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials A sample of metal weighs 219 gms in air, 180 gms in water, 120 gms in an unknown fluid. Then which is correct statement about density of metal metal is twice as dense as water density of metal can’t be determined metal will float in water metal is twice as dense as unknown fluid metal is twice as dense as water density of metal can’t be determined metal will float in water metal is twice as dense as unknown fluid ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Forces are called coplanar when all of them acting on body lie in one plane perpendicular planes one point different planes one plane perpendicular planes one point different planes ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials If a suspended body is struck at the centre of percussion, then the pressure on die axis passing through the point of suspension will be Minimum Maximum Zero Infinity Minimum Maximum Zero Infinity ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials A force acting on a body may retard its motion change its motion introduce internal stresses All of the listed here retard its motion change its motion introduce internal stresses All of the listed here ANSWER DOWNLOAD EXAMIANS APP
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