Question

What is the use of Turbine?

(a) Generate work to drive shaft

(b) To compress the flow

(c) To increase pressure

(d) To increase temperature

This question was addressed to me in an online interview.

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

Answer 1

Right answer is (a) Generate work to drive shaft

To explain: Turbine is an essential component of gas turbine engine. Turbine is used to decrease temperature and pressure of the gas. Combustion products pressure is reduced by turbine. Turbine generates work to drive the shaft.