Strength of Materials The effort required to lift a load W on a screw jack with helix angle a and angle of friction<="" div=""> Wtan(a + <)>) Wcos(a + ) Wsin(a + <(>) Wtan(a-<)>) Wtan(a + <)>) Wcos(a + ) Wsin(a + <(>) Wtan(a-<)>) ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials If a number of forces act simultaneously on a particle, it is possible 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 To replace them by a single force through C.G. To replace them by a couple ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be r/A r/2 3r/2 2r/3 r/A r/2 3r/2 2r/3 ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Two coplanar couples having equal and opposite moments Produce a moment of couple Balance each other Produce a couple and an unbalanced force Are equivalent Produce a moment of couple Balance each other Produce a couple and an unbalanced force Are equivalent ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials A pair of smith’s tongs is an example of the lever of first order third order zeioth order second order first order third order zeioth order second order ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The center of percussion of the homogeneous rod of length L suspended at the top will be 2L/3 3L/4 L/3 L/2 2L/3 3L/4 L/3 L/2 ANSWER DOWNLOAD EXAMIANS APP
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