Strength of Materials A number of forces acting at a point will be in equilibrium if Their total sum is zero Sum of resolved parts in any two perpendicular directions are both zero All of them are inclined equally Two resolved parts in two directions at right angles are equal Their total sum is zero Sum of resolved parts in any two perpendicular directions are both zero All of them are inclined equally Two resolved parts in two directions at right angles are equal ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Dynamic friction as compared to static friction is same may be less of more depending on nature of surfaces and velocity less more same may be less of more depending on nature of surfaces and velocity less more ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Forces are called coplanar when all of them acting on body lie in one plane perpendicular planes different planes one point one plane perpendicular planes different planes one point 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 will float in water metal is twice as dense as unknown fluid density of metal can’t be determined metal is twice as dense as water metal will float in water metal is twice as dense as unknown fluid density of metal can’t be determined metal is twice as dense as water ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials In actual machines mechanical advantage is less than velocity ratio mechanical advantage is unity mechanical advantage is equal to velocity ratio mechanical advantage is greater than velocity ratio mechanical advantage is less than velocity ratio mechanical advantage is unity mechanical advantage is equal to velocity ratio mechanical advantage is greater than velocity ratio 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<="" div=""> Wsin(a + <(>) Wtan(a-<)>) Wcos(a + ) Wtan(a + <)>) Wsin(a + <(>) Wtan(a-<)>) Wcos(a + ) Wtan(a + <)>) ANSWER DOWNLOAD EXAMIANS APP
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