Types and Functions of Air Compressors

The video tutorial explains the types of air compressors, starting with an introduction to their function and history. It covers positive displacement compressors, including reciprocating and vein types, and dynamic compressors, focusing on centrifugal types. The tutorial concludes with various applications of these compressors in industries like petrol stations, jet engines, and construction sites.

What is the primary function of an air compressor?

• To convert air into liquid

• To increase the pressure of air by reducing its volume

• To decrease the pressure of air

• To increase the volume of air

Who designed the first motorized air compressor?

• Nikola Tesla

• James Watt

• George Medhurst

• Thomas Edison

In positive displacement compressors, what happens to the air or gas?

• It is trapped and its volume is reduced

• It is released into the atmosphere

• It is expanded in a chamber

• It is trapped and its volume is increased

Which of the following is a type of positive displacement compressor?

• Reciprocating compressor

• Screw compressor

• Axial compressor

• Centrifugal compressor

How do dynamic compressors increase air pressure?

• By using rotating impellers to impart velocity energy

• By using a piston to compress air

• By trapping air in a chamber

• By expanding air in a diffuser

What determines the relationship between airflow and pressure in centrifugal compressors?

• The speed of the motor

• The size of the compressor

• The type of gas used

• The shape of the impeller blades

Where are reciprocating compressors commonly used?

• In air conditioning units

• At petrol pumps and air filling stations

• In jet engines

• In refrigeration systems

What type of compressors are often seen at construction sites?

• Centrifugal compressors

• Reciprocating compressors

• Screw compressors

• Axial compressors