List of top Mechanical Engineering Questions

If the resultant of two forces of equal magnitude has the same magnitude as either of the two forces, then the angle between the two forces is
If the tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is
For a 2-dimensional truss structure, if \( m \) is the number of members, \( j \) is the number of joints and \( r \) is the number of reactions, then the condition for instability of the structure is
For a 2-dimensional truss structure, if \( m \) is the number of members, \( j \) is the number of joints and \( r \) is the number of reactions, then the condition for instability of the structure is
If \( u_1 \) and \( u_2 \) are the velocities of two bodies moving in the same direction before impact and \( v_1 \) and \( v_2 \) are the velocities of the same two bodies after impact, then the coefficient of restitution is
The Newton-Raphson method is used to find the root of \[ f(x) \equiv x^2 - x - 1 = 0 \] Starting with an initial guess \( x_0 = 1 \), the second iterate \( x_2 \) is _______ (rounded off to 2 decimal places).
The elastic constants, modulus of rigidity ‘K’ and modulus of elasticity ‘E’ are related through Poisson’s ratio ‘$\mu$’ as:
From a metallic wall at 100$^\circ$C, a metallic rod protrudes to the ambient air. The temperature at the tip will be minimum when the rod is made of:
In electrical resistance welding, pressure applied varies in the range:
Bernoulli’s equation is applicable to:
The area enclosed by a thermodynamic cycle on a p-v diagram represents:
Compared to the Otto cycle for the same compression ratio, the diesel cycle efficiency is:
Francis, Kaplan and propeller turbines fall under the category of:
For maximum horizontal range, the angle of projection of a projectile should be:
Discontinuous chips are formed during machining of:
Limits and fits ensure:
If the efficiency of a belt drive is more than 50%, then it is called:
Heat conduction through a wall follows:
Conduction requires:
A system of masses rotating in different parallel planes is in dynamic balance if the resultant:
The creep in belt drive is due to the:
Ability of a material to retain the deformation permanently is called:
A flow in which each liquid particle has a definite path and their paths do not cross each other, is called:
Spur gears have:
With rise in gas temperature, dynamic viscosity of most of the gases: