Engineering Mechanics The maximum efficiency of a lifting machine is 1/m m/V.R. V.R./m 1/(m × V.R.) 1/m m/V.R. V.R./m 1/(m × V.R.) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A block of mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will ___________ with the increase in coefficient of friction. Increase Not be effected Decrease None of these Increase Not be effected Decrease None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The bodies which rebound after impact are called Elastic bodies Neither elastic nor inelastic bodies Inelastic bodies None of these Elastic bodies Neither elastic nor inelastic bodies Inelastic bodies None of these ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If a body is acted upon by a number of coplanar non-concurrent forces, it may Rotate about itself without moving Be completely at rest All of these Move in any one direction rotating about itself Rotate about itself without moving Be completely at rest All of these Move in any one direction rotating about itself ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to Half the area of the triangle None of these Twice the area of the triangle Area of the triangle Half the area of the triangle None of these Twice the area of the triangle Area of the triangle ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A screw jack used for lifting the loads is A non-reversible machine None of these A reversible machine An ideal machine A non-reversible machine None of these A reversible machine An ideal machine ANSWER DOWNLOAD EXAMIANS APP
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