Engineering Mechanics If u₁ and u₂ are the velocities of two moving bodies in the same direction before impact and v₁ and v₂ are their velocities after impact, then coefficient of restitution is given by (u₂ + u₁)/(v₂ + v₁) (v₁ - v₂)/(u₁ - u₂) (v₂ - v₁)/(u₁ - u₂) (u₁ - u₂)/(v₁ - v₂) (u₂ + u₁)/(v₂ + v₁) (v₁ - v₂)/(u₁ - u₂) (v₂ - v₁)/(u₁ - u₂) (u₁ - u₂)/(v₁ - v₂) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The ratio of static friction to dynamic friction is always Less than one None of these Greater than one Equal to one Less than one None of these Greater than one Equal to one ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The unit of angular velocity is rad/s Revolutions/min m/min Both (B) and (C) rad/s Revolutions/min m/min Both (B) and (C) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The coefficient of friction depends upon Nature of surfaces All of these Shape of the surfaces Area of contact Nature of surfaces All of these Shape of the surfaces Area of contact ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The forces, whose lines of action are parallel to each other and act in the same directions, are known as Coplanar concurrent forces Like parallel forces Coplanar non-concurrent forces Unlike parallel forces Coplanar concurrent forces Like parallel forces Coplanar non-concurrent forces Unlike parallel forces ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics A machine having an efficiency less than 50%, is known as Ideal machine Neither reversible nor non-reversible machine Reversible machine Non-reversible machine Ideal machine Neither reversible nor non-reversible machine Reversible machine Non-reversible machine ANSWER DOWNLOAD EXAMIANS APP
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