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 + ) Wtan(a-<)>) Wtan(a + <)>) Wsin(a + <(>) Wcos(a + ) Wtan(a-<)>) Wtan(a + <)>) Wsin(a + <(>) ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials The C.G. of a right circular solid cone of height h lies at the following distance from the base J/3 h/2 h/6 h/4 J/3 h/2 h/6 h/4 ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Forces are called coplanar when all of them acting on body lie in one point one plane different planes perpendicular planes one point one plane different planes perpendicular planes 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 20 kg, + ve sense 20 kg, - ve sense 10 kg, + ve sense 10 kg, - ve sense 20 kg, + ve sense 20 kg, - ve sense 10 kg, + ve sense ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials Center of percussion is the point of metacentre the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis point of suspension the point of C.G. the point of metacentre the point of application of the resultant of all the forces tending to cause a body to rotate about a certain axis point of suspension the point of C.G. ANSWER DOWNLOAD EXAMIANS APP
Strength of Materials A heavy string attached at two ends at same horizontal level and when central dip is very small approaches the following curve parabola hyperbola elliptical catenary parabola hyperbola elliptical catenary ANSWER DOWNLOAD EXAMIANS APP
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