15 Questions
What primarily determines the efficiency of a gas turbine?
The temperature to which the air can be raised before it enters the turbine
In what way does cold air at the compressor intake affect gas turbine output?
It produces a marked increase in gas turbine output
What type of gas turbines are derived from the jet engines used in aircrafts?
Aeroderivative gas turbines
What drives the propeller in the typical turboprop aircraft engine?
Reduction gears driven by the second turbine
What is used to deliver a considerable amount of useful power in the heavy-duty gas turbine?
Multiple rows of blades in the gas turbine
What is the role of the fuel in a gas turbine?
To add heat to the compressed air
Why were early gas turbines handicapped in industry?
Lack of suitable metals to withstand high temperatures
What is the main reason for essentially all of the turbine output being used to run the compressor in early gas turbines?
Inability to produce profitable net power output
In which field is the gas turbine supreme today?
Aircraft propulsion
What is the construction of a simple gas turbine?
Compressor attached to a turbine with a combustion chamber between them
What is the purpose of rotating the gas turbine at 20 to 30% of its maximum speed before turning on the fuel?
To provide sufficient air compression for driving the compressor when fuel is injected
What is the significance of the starting motor in a gas turbine?
It is essential for rotating the gas turbine to achieve sufficient air compression before fuel injection
What distinguishes a simple gas turbine from other types of gas turbines?
It has no heat exchanger, regenerators, or intercoolers
What defines an open-cycle gas turbine?
It draws air from the atmosphere for driving the turbine and returns it after use
What is the defining feature of a single shaft gas turbine?
The gas turbine and compressor are mechanically coupled on the same shaft
Test your knowledge about the principles and history of gas turbines, which serve as both a heat engine and a prime mover in industry. Explore the process of adding heat to compressed air, expansion through turbine blades, and the technical advancements in gas turbine technology.
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