Question

The function of carburettor is to allow
A. Only petrol into engine
B. Only sir into the engine
C. Mixture of air and petrol into the engine
D. Diesel and air into the engine

Answer 1

It is the carburettor which is used to mix the things in a perfect ratio to ensure engine function properly. This is the function of a carburettor. Improper use of this will lead to engine damage.

Complete step by step answer:
First of all let us discuss the carburettors. A carburettor is a device that is used to mix up the air and fuel. This has been done for internal combustion in engines which has to be in correct air–fuel ratio. If the ratio becomes improper then combustion is not going to take place in a perfect way which leads to the damage of the engine. The carburettor works by taking up the air from the car which is passed through filters to remove debris. Then when the throttle opens, both air and fuel gets mixed up there. More air and fuel will be mixed up so the engine works with more power and the car goes at more speed. There are three types of carburettors. Constant choke carburettor, constant vacuum carburettor, constant vacuum Carburettor are the three ones. Carburettors are better compared to fuel injectors. For the best performance, the best fuel to air ratio for each cylinder is approximated. Carburettors are the better one than the fuel injection system. They are also cheaper than fuel injectors. Under high pressure, fuel is atomized through a small nozzle. This is how fuel injection is being done.
So the correct answer is option C.

Note: The carburettor is a part of our daily life as it is used in our cars. The usage is also well known. Those who know these details can answer this question very easily. Symptoms of bad carburettor is the reduced engine performance. This is the most common symptom. A black smoke from the exhaust and hard starting is also symptoms for this.