Engineering Mechanics Questions

• Which of the following statement is correct?
• The centre of percussion is below the centre of gravity of the body and is at a distance equal to
• The centre of gravity of a quadrant of a circle lies along its central radius (r) at a distance of
• If a number of coplaner forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.
• The velocity of a body on reaching the ground from a height h, is
• The term 'centroid' is
• The unit of energy in S.I. units is
• If a body is acted upon by a number of coplaner non-concurrent forces, it may
• In order to completely specify angular displacement by a vector, it must fix
• The angle which the normal reaction makes with the resultant reaction is called angle of friction.
• The amount by which the outer edge of the rail is raised, is known as super-elevation.
• A machine having an efficiency greater than 50%, is known as
• The angle of inclination of the plane at which the body begins to move down the plane, is called
• Which of the following statement is correct in connection with projectiles?
• When a body falls freely under gravitational force, it possesses __________ weight.
• Two forces are acting at an angle of 120°. The bigger force is 40N and the resultant is perpendicular to the smaller one. The smaller force is
• When the lift is moving upwards with some acceleration, the pressure exerted by a man is __________ proportional to its acceleration.
• The maximum mechanical advantage of a lifting machine is
• If three forces acting at a point be represented in magnitude and direction by the three sides of a triangle, taken in order, the forces shall be in equilibrium.
• If a body is thrown upwards, then the gravitational acceleration is taken as zero.