Strength of Materials The effort required to lift a load W on a screw jack with helix angle a and angle of friction<="" div=""> Wcos(a + ) Wsin(a + <(>) Wtan(a-<)>) Wtan(a + <)>) Wcos(a + ) Wsin(a + <(>) Wtan(a-<)>) Wtan(a + <)>) ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Forces are called coplanar when all of them acting on body lie in perpendicular planes different planes one plane one point perpendicular planes different planes one plane one point ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials If three forces acting in different planes can be represented by a triangle, these will be in full equilibrium non-equilibrium unpredictable partial equilibrium full equilibrium non-equilibrium unpredictable partial equilibrium 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 center of gravity of a uniform lamina lies at the mid point of its axis All of these the bottom surface the center of heavy portion the mid point of its axis All of these the bottom surface the center of heavy portion ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The co-efficient of friction depends upon shape of the surfaces area of contact All of the listed here nature of surfaces shape of the surfaces area of contact All of the listed here nature of surfaces ANSWER DOWNLOAD EXAMIANS APP
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