Gas Turbine Characteristics

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What makes gas turbines ideal for standby duties such as fire pumps and emergency electricity generators?

They require slow and elaborate preparations before starting

They have lower NOX emissions than steam turbines

They have lower mechanical/thermal efficiency

They can be started almost instantaneously (correct)

What is a major drawback of gas turbines in terms of the types of fuel they can use?

They can only use solid fuels

They have high noise levels

They are limited to clean, liquid, or gaseous fuels (correct)

They require special baffle systems for exhaust

Why do gas turbines have low mechanical/thermal efficiency compared to other power plants?

Because they have high NOX emissions

Because they have higher compression ratio

Because they are affected by ambient air pressure and temperature (correct)

Because they require special baffle systems for exhaust

How do gas turbines differ from steam turbines in terms of startup and loading?

Gas turbines can be started almost instantaneously, while steam turbines require slow and elaborate preparations Signup and view all the answers

Which technological advance has increased gas turbine thermal efficiency according to the text?

More efficient compressor blades Signup and view all the answers

What environmental concern is associated with gas turbines according to the text?

High NOX emissions Signup and view all the answers

Why are regenerators added to gas turbines?

To improve thermal efficiency Signup and view all the answers

What makes gas turbines ideal for supplying the mechanical drive for electrical generators operated only to supply peak electrical loads?

Rapid loading up to full load Signup and view all the answers

What is one advantage of gas turbines compared to steam plants?

Higher power to weight ratio Signup and view all the answers

Why do gas turbine plants have lower installed cost compared to steam plants?

They require less space Signup and view all the answers

What contributes to the lower maintenance and operating cost of gas turbines?

Simplicity and fewer auxiliaries Signup and view all the answers

Why can gas turbines operate economically with a closed circulating water system?

They have air-cooled heat exchangers Signup and view all the answers

Gas Turbine Characteristics

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Questions and Answers

What makes gas turbines ideal for standby duties such as fire pumps and emergency electricity generators?

What is a major drawback of gas turbines in terms of the types of fuel they can use?

Why do gas turbines have low mechanical/thermal efficiency compared to other power plants?

How do gas turbines differ from steam turbines in terms of startup and loading?

Which technological advance has increased gas turbine thermal efficiency according to the text?

What environmental concern is associated with gas turbines according to the text?

Why are regenerators added to gas turbines?

What makes gas turbines ideal for supplying the mechanical drive for electrical generators operated only to supply peak electrical loads?

What is one advantage of gas turbines compared to steam plants?

Why do gas turbine plants have lower installed cost compared to steam plants?

What contributes to the lower maintenance and operating cost of gas turbines?

Why can gas turbines operate economically with a closed circulating water system?

What characteristic distinguishes gas turbines from other types of prime movers?

Why are gas turbine plants less mechanically complex than steam plants?

What contributes to the rapid startup and loading of gas turbines?

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