Applied Mechanics and Graphic Statics The centre of gravity of a trapezoidal dam section whose top width is a, bottom width is band the vertical side is a, from its vertical face is (b² + bc + c²)/3 (b + c) (a² + ab + c²)/3 (a + c) (a² + ab + b²)/3 (a + b) None of these (b² + bc + c²)/3 (b + c) (a² + ab + c²)/3 (a + c) (a² + ab + b²)/3 (a + b) None of these ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A block of weight 50 kg is placed on a horizontal plane. When a horizontal force of 18 kg is applied, the block is just on the point of motion. The angle of friction is 17° 48' 19° 48' 18° 48' 20° 48' 17° 48' 19° 48' 18° 48' 20° 48' ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A ladder of weight 'w' rests against a smooth vertical wall, and rests on rough horizontal ground, the coefficient of friction between the ladder and the ground being 1/4. The maximum angle of inclination of the ladder to the vertical, if a man of weight 'w' is to walk to the top of it safely, is tan'1 x, where x is 1/4 3 1/3 4 1/4 3 1/3 4 ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics If two forces are in equilibrium, then the forces must(i) Be equal in magnitude(ii) Be opposite in sense(iii) Act along the same line (i) and (ii) Only (i) (i) and (iii) All (i), (ii) and (iii) (i) and (ii) Only (i) (i) and (iii) All (i), (ii) and (iii) ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A 2 m long ladder rests against a wall and makes an angle of 30° with the horizontal floor. Where will be the instantaneous center of rotation when the ladder starts slipping ? i. 1.0 in from the wall ii. 1.732 m from the wall iii. 1.0 m above the floor iv. 1.732 m above the floor The correct answer is (i) and (iii) (i) and (iv) (ii) and (iii) (ii) and (iv) (i) and (iii) (i) and (iv) (ii) and (iii) (ii) and (iv) ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics For a self-locking machine, the efficiency should be 0.5 More than 50% None of these Less than 60% 0.5 More than 50% None of these Less than 60% ANSWER DOWNLOAD EXAMIANS APP
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