Engineering Mechanics Work done is said to be zero, when No force acts on a body but some displacement takes place Some force acts on a body, but displacement is zero None of these Either (A) or (B) No force acts on a body but some displacement takes place Some force acts on a body, but displacement is zero None of these Either (A) or (B) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics For any system of coplanar forces, the condition of equilibrium is that the Algebraic sum of moments of all the forces about any point should be zero All of these Algebraic sum of the vertical components of all the forces should be zero Algebraic sum of the horizontal components of all the forces should be zero Algebraic sum of moments of all the forces about any point should be zero All of these Algebraic sum of the vertical components of all the forces should be zero Algebraic sum of the horizontal components of all the forces should be zero ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics When a body of mass 'm' attains a velocity 'v' from rest in time 't', then the kinetic energy of translation is 0.5 mv2 0.5 mgv2 mv2 mgv2 0.5 mv2 0.5 mgv2 mv2 mgv2 ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.) π/ω ω/2π 2π × ω 2π/ω π/ω ω/2π 2π × ω 2π/ω ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics When a body of mass moment of inertia 'I' (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is Iω 0.5 Iω2 Iω2 0.5 Iω Iω 0.5 Iω2 Iω2 0.5 Iω ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The velocity ratio of a single purchase crab winch can be increased by Increasing the number of teeth of the pinion Increasing the length of the handle Increasing the radius of the load drum All of these Increasing the number of teeth of the pinion Increasing the length of the handle Increasing the radius of the load drum All of these ANSWER DOWNLOAD EXAMIANS APP
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