Question

What is the function of a compressor?

(a) To increase pressure and temperature

(b) To increase velocity of flow

(c) To expand flow

(d) To generate work

This question was addressed to me in a job interview.

This interesting question is from Propulsion Selection topic in section Propulsion and Fuel System Integration of Aircraft Design

Answer 1

Right option is (a) To increase pressure and temperature

The best explanation: Compressor is used to compress the flow. Compressor Increases pressure and temperature of the flow flowing through it. Due to increase in pressure, velocity of the flow reduces. Flow expansion can be achieved through nozzle.