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 (a² + ab + c²)/3 (a + c) None of these (a² + ab + b²)/3 (a + b) (b² + bc + c²)/3 (b + c) (a² + ab + c²)/3 (a + c) None of these (a² + ab + b²)/3 (a + b) (b² + bc + c²)/3 (b + c) ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics Pick up the correct statement from the following. A rubber ball when strikes a wall rebounds but a lead ball of same mass and velocity when strikes the same wall, falls down Rubber and lead balls undergo equal changes in momentum None of these Momentum of rubber ball is less than that of lead ball Change in momentum suffered by lead ball is less that of rubber ball Rubber and lead balls undergo equal changes in momentum None of these Momentum of rubber ball is less than that of lead ball Change in momentum suffered by lead ball is less that of rubber ball ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics Pick up the incorrect statement from the following. In a simple harmonic motion Acceleration is zero at the mean position Velocity is minimum at the end of the stroke Velocity is maximum at its mean position Acceleration is minimum at the end of the stroke Acceleration is zero at the mean position Velocity is minimum at the end of the stroke Velocity is maximum at its mean position Acceleration is minimum at the end of the stroke ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics The resolved part of the resultant of two forces inclined at an angle θ in a given direction is Difference of the forces multiplied by cosine θ° Algebraic sum of the resolved parts of the forces in the direction Sum of the forces multiplied by the tangent θ° Arithmetical sum of the resolved parts of the forces in the direction Difference of the forces multiplied by cosine θ° Algebraic sum of the resolved parts of the forces in the direction Sum of the forces multiplied by the tangent θ° Arithmetical sum of the resolved parts of the forces in the direction ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics A sphere and a cylinder having the same mass and radii start from rest and roll down the same inclined plane. Which body gets to the bottom first? Both reach the bottom simultaneously with equal rotational energy at bottom Sphere with greater rotational energy at bottom than cylinder Cylinder with greater rotational energy at bottom than sphere Sphere with lesser rotational energy at bottom than cylinder Both reach the bottom simultaneously with equal rotational energy at bottom Sphere with greater rotational energy at bottom than cylinder Cylinder with greater rotational energy at bottom than sphere Sphere with lesser rotational energy at bottom than cylinder ANSWER DOWNLOAD EXAMIANS APP
Applied Mechanics and Graphic Statics If ‘v’ and ‘ω’ are linear and angular velocities, the centripetal acceleration of a moving body along the circular path of radius ‘r’, will be r/v² r/ω² ω²/r v²/r r/v² r/ω² ω²/r v²/r ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS