List of top Mechanical Engineering Questions

In a psychrometric chart, what does a vertical downward line represent?
Match List-I with List-II
List-I (Details of the processes of the cycle)List-II (Name of the cycle)
(A) Two adiabatic, one isobaric and two isochoric(I) Diesel
(B) Two adiabatic and two isochoric(II) Carnot
(C) Two adiabatic, one isobaric and one isochoric(III) Dual
(D) Two adiabatics and two isothermals(IV) Otto
Choose the correct answer from the options given below:
If the kinetic energy of the body with constant mass becomes four times the initial value, then the new momentum will be:
The equation of free vibration of a system is \( X + 36\pi^2 X = 0 \). Its natural frequency is:
Sine bar is specified by:
V-block used in the workshop to check:
Which of the following is the most accurate method to measure the diameter of a cylindrical object?
Which one of the following symbols is used as the notation for designing arm and body of a robot, with joined arm configuration?
For an insulated tip, the fin efficiency is given by
After expansion from a gas turbine, the hot exhaust gases are used to heat the compressed air from a compressor with the help of a cross-flow compact heat exchanger of 0.8 effectiveness. What is the number of transfer units of the heat exchanger?
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:
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:
In electrical resistance welding, pressure applied varies in the range:
Bernoulli’s equation is applicable to:
Discontinuous chips are formed during machining of:
Limits and fits ensure:
For maximum horizontal range, the angle of projection of a projectile should be:
Francis, Kaplan and propeller turbines fall under the category of:
Heat conduction through a wall follows:
If the efficiency of a belt drive is more than 50%, then it is called:
Ability of a material to retain the deformation permanently is called:
Conduction requires: