List of top Mechanical Engineering Questions on Mechanics

For a DC power source for arc welding with characteristics \(3V + I = 240\), what voltage \(V\) yields maximum power?
The maximum frictional force which comes into play when a body just begins to slide over another surface is called
If the kinetic energy of the body with constant mass becomes four times the initial value, then the new momentum will be:
A body starting with initial velocity zero, moves in a straight line as per the law \( s = 5t^3 - 3t^2 - 5 \) (where \( s \) is distance in meters and \( t \) is time in seconds). The acceleration of the particle after 0.5 seconds will be:
The gears employed for connecting two non-intersecting and non-parallel, i.e., non-coplanar shafts are:
Amount of external energy required to deform an elastic body is called:
A Mohr's circle reduces to a point when the body is subjected to:
In thin cylindrical pressure vessels, hoop stress is:
If two bodies one light and other heavy have equal kinetic energies, which one has a greater momentum?
In gears, interference takes place when:
What is the nature of distribution of shear stress in a rectangular beam?
For plane stress, Mohr’s circle has:
Euler’s theory applies to:
In a simply supported beam with a uniform load, the shear force is maximum at:
A bullet is fired upwards at an angle of \(30^\circ\) to the horizontal from a point P on a hill, and it strikes a target which is 80 m lower than P. The initial velocity of the bullet is 100 m/s. Calculate the maximum height to which the bullet will rise above the horizontal. Assume \( g = 9.81 \) m/s\(^2\).
Currently, eighty-five percent of all neck injuries are caused by rear-end car collisions. To alleviate this problem, an automobile seat restraint has been developed that provides additional pressure contact with the cranium. During dynamic tests, the distribution of load on the cranium has been plotted and shown to be parabolic. Determine the equivalent resultant force and its location, measured from point A. 
neck injuries