Mechanical And Automobile Engineering Interview Questions

Automobile Engineering

Automobile engineering is the branch of mechanical engineering which deals with auto movable vehicle. In this article here are the interview and questions for new jobs as well as viva of experiments.Here are the question based on the topics like gear box, ignition system, lubrication system,suspension system, fuel supply system, steering system and breaking system etc..

Questions And Answers Based on Gearbox

Q. 1 What is the principle of gearing?

Ans. The ratio of speeds of the two gears is inversely proportional to the ratios of number of teeth on each gear.

Q. 2 What are the advantages of constant mesh gearbox over sliding mesh gearbox?

Ans. In constant mesh gearbox, the gear engagement is quick, quieter and smooth.

Q. 3 What is double declutching in synchromesh gearbox?

Ans. During the gear change,the driver need to disengage the clutch twice in a very quick time, so it is called as double declutching.

Q. 4 How the hydrostatic propulsion systems work in tactor?

Ans. Hydrostatic propulsion system works according to the Pascal's law. But on the piston of tactor's engine pressure is same. Hence this pressure is devided acording to the area. Like more force on large area and less force on small area.

Questions on Lubrication system

Q. 1 What is an oil breather?

Ans. The oil breather is an opening in the engine lubricating system,through which oil is exposed to the surrounding.

Q. 2 What is the purpose of lubrication?

Ans. The purpose of lubrication is to cool,clean,avoid wear and forming a kind of seal in the parts.

Q. 3 What is the delivery pressure of oil pumps?

Ans. 2.5 to 4.5 kg/cm2

Q 4 What would happen If someone will add lubricating oil to the fuel of a bike?

Ans. The physical properties of lubricating oil are different from the fuel oil. Hence as a result the engine will go to the soon damaging. There will be more wear and tear in the piston and linear. There will be some knocking also. Knocking will reduce the efficiency and breakpower of the engine.