Engineering Mechanics The velocity ratio for the third system of pulleys is 2n - 1 n 2n n² 2n - 1 n 2n n² ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics For a self locking machine, the efficiency must be 1 Less than 50% Equal to 50% Greater than 50% 1 Less than 50% Equal to 50% Greater than 50% ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The horizontal range of a projectile (R) is given by R = u² cosα/g R = u² cos2α/g R = u² sin2α/g R = u² sinα/g R = u² cosα/g R = u² cos2α/g R = u² sin2α/g R = u² sinα/g ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The Cartesian equation of trajectory is (where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.) y = (gx²/2u² cos²α) - x. tanα y = x. tanα + (gx²/2u² cos²α) y = (gx²/2u² cos²α) + x. tanα y = x. tanα - (gx²/2u² cos²α) y = (gx²/2u² cos²α) - x. tanα y = x. tanα + (gx²/2u² cos²α) y = (gx²/2u² cos²α) + x. tanα y = x. tanα - (gx²/2u² cos²α) ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics If the gravitational acceleration at any place is doubled, then the weight of a body will be √2.g 2g g/2 g √2.g 2g g/2 g ANSWER DOWNLOAD EXAMIANS APP
Engineering Mechanics The ratio of static friction to dynamic friction is always Equal to one None of these Greater than one Less than one Equal to one None of these Greater than one Less than one ANSWER DOWNLOAD EXAMIANS APP
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