Engineering Mechanics The maximum efficiency of a screw jack is (1 + tanφ)/(1 - tanφ) (1 - tanφ)/(1 + tanφ) (1 - sinφ)/(1 + sinφ) (1 + sinφ)/(1 - sinφ) (1 + tanφ)/(1 - tanφ) (1 - tanφ)/(1 + tanφ) (1 - sinφ)/(1 + sinφ) (1 + sinφ)/(1 - sinφ) 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 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 Slant up towards direction of pull ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The maximum efficiency of a lifting machine is m/V.R. V.R./m 1/m 1/(m × V.R.) m/V.R. V.R./m 1/m 1/(m × V.R.) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Moment of inertia is the Second moment of mass Second moment of force Second moment of area All of these Second moment of mass Second moment of force Second moment of area All of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The forces, which meet at one point, but their lines of action do not lie in a plane, are called Non-coplanar concurrent forces Non-coplanar non-concurrent forces Coplanar non-concurrent forces Intersecting forces Non-coplanar concurrent forces Non-coplanar non-concurrent forces Coplanar non-concurrent forces Intersecting forces ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The process of finding out the resultant force is called __________ of forces. Decomposition Composition Resolution None of these Decomposition Composition Resolution None of these ANSWER DOWNLOAD EXAMIANS APP
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