This is a compilation of a few essential interview questions which were asked at big and reputed companies interviews.
Table of Contents
What will happen if the diesel engine makes it runs on petrol? (Hyundai)
When petrol is added to a diesel engine, a diesel engine will start but will face difficulty in a smooth run as petrol (which has a low flash point of -43 ⁰C) experiences detonation before the actual compression takes place in a diesel engine. Petrol also deteriorates the lubricating system of diesel engines. Hence it is not advisable to run a diesel engine with petrol. Here one counter questions come,
What will happen if the petrol engine makes it runs on diesel?
Petrol engines with diesel as fuel cannot start because of the high flashpoint of diesel (52 ⁰C). Because of this poor mixture of diesel (less volatile than petrol) and air forms and cannot be started by the spark plug. Hence one cannot start a petrol engine with diesel as fuel.
What is the difference between a pipe and a tube?
The difference between pipe and tube lies in the diameter and thickness.
What is the difference between a blower and a compressor?
A compressor (which compresses) is a machine that raises the pressure of compressible fluid while a blower (which blows) is a machine that is used to displace or transfer the fluid volumes with a moderate increase in pressure.
What is the difference between a pump and a compressor?
The difference lies in the fluid type and pressure increase. The pump is a device or machine used to raise the pressure of the incompressible fluid (mostly liquid) to a greater height with the increase in pressure energy while the compressor compresses the compressible gases to higher pressure greater than 1.5 times the inlet pressure.