Why compression ratio of petrol engine is kept low compared to diesel engine?
What is the need for a high compression ratio? Today every machine is expected to give higher efficiency. When we talk about the petrol engine and diesel engine whose thermal…
Mechanical Engineering interview questions
This is a compilation of a few essential interview questions which were asked at big and reputed companies interviews. What will happen if the diesel engine makes it runs on…
How to create animation in AutoCAD software?
In the Mechanical Engineering curriculum, the student needs to understand many mechanisms like piston-slider mechanism, slider-crank, or four-bar chain mechanism. This mechanism can be better understood by the use of…
Objective Questions in Mechanical Engineering for Competitive GATE Exams
Choose the correct answer: 1. In tool steel the percentage of silicon is usually restricted to (A) 0.5 % (B) 1 % (C) 0.2 % (D) 2 % 2. In…
Final year Mechanical Project: Design of Gear Box for speed variations in Automobile and Machine Tools
Any mechanical design project involves a design procedure that you need to stick to it for a complete finalized product you want. Design involves considerations of many things like material…
Important interview questions about mechanical engineering – Thermodynamics (Part II)
Why Specific heat at constant pressure is greater than Specific heat at constant volume? First of all, let us define Specific Heat at Constant Pressure (Cp) and Specific Heat at…
Thermodynamic Tutorial: Laws of thermodynamics and properties of pure substances
Thermodynamics Tutorial: Second law of Thermodynamics 1 What is the minimum amount of work input necessary to a refrigerator which will convert 1 kg of water at 20 oC into…
Introduction to energy, energy sources and energy conversion process
What is energy? Energy or power is nothing but the ability of the physical system to do work. As per the law of energy conservation, the total energy in the…