Engineering Mechanics An ideal machine is one whose efficiency is Between 80 and 90% Between 70 and 80% Between 60 and 70 % 1 Between 80 and 90% Between 70 and 80% Between 60 and 70 % 1 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If a body is acted upon by a number of coplanar non-concurrent forces, it may 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 Rotate about itself without moving Be completely at rest ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If the gravitational acceleration at any place is doubled, then the weight of a body will be 2g √2.g g/2 g 2g √2.g g/2 g ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The range of projectile on a downward inclined plane is ________ the range on upward inclined plane for the same velocity of projection and angle of projection. Less than Equal to None of These More than Less than Equal to None of These More than ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Efficiency of a screw jack is given by (where α = Helix angle, and φ = Angle of friction.) None of these tan(α + φ)/tanα tan(α - φ)/tanα tanα/tan (α + φ) None of these tan(α + φ)/tanα tan(α - φ)/tanα tanα/tan (α + φ) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics Varingon's theorem of moments states that if a number of coplanar forces acting on a particle are in equilibrium, then Their algebraic sum is zero The algebraic sum of their moments about any point in their plane is zero The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point Their lines of action are at equal distances Their algebraic sum is zero The algebraic sum of their moments about any point in their plane is zero The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point Their lines of action are at equal distances ANSWER DOWNLOAD EXAMIANS APP
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