Engineering Mechanics In a screw jack, the effort required to lower the load is __________ the effort required to raise the same load. Equal to Less than None of these More than Equal to Less than None of these More than ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a square of side (a) about an axis through its center of gravity is a4/4 a4/12 a4/8 a4/36 a4/4 a4/12 a4/8 a4/36 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The moment of inertia of a thin disc of mass ‘m’ and radius ‘r’, about an axis through its center of gravity and perpendicular to the plane of the disc is mr²/6 mr²/2 mr²/4 mr²/8 mr²/6 mr²/2 mr²/4 mr²/8 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The forces which do not meet at one point and their lines of action do not lie on the same plane are known as Coplanar non-concurrent forces Coplanar concurrent forces Non-coplanar concurrent forces None of these Coplanar non-concurrent forces Coplanar concurrent forces Non-coplanar concurrent forces None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The time of flight (t) of a projectile on an upward inclined plane is(where u = Velocity of projection, α = Angle of projection, and β = Inclination of the plane with the horizontal.) t = g cos β/2u sin (α + β) t = 2u sin (α - β)/g cos β t = g cos β/2u sin (α - β) t = 2u sin (α + β)/g cos β t = g cos β/2u sin (α + β) t = 2u sin (α - β)/g cos β t = g cos β/2u sin (α - β) t = 2u sin (α + β)/g cos β ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will Slant up towards direction of pull Slant down towards direction of pull Remain horizontal None of these Slant up towards direction of pull Slant down towards direction of pull Remain horizontal None of these ANSWER DOWNLOAD EXAMIANS APP
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