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Turbomachine Energy Losses and Efficiency Quiz

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Turbomachine Energy Losses and Efficiency Quiz

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Questions and Answers

Which of the following factors can contribute to energy losses in turbomachines?

Low flow rate

Smooth surfaces

Low operating temperature

Turbulence (correct)

Which of the following statements is true about the energy efficiency of turbomachines?

Turbomachines have 100% energy efficiency

Energy losses in turbomachines are negligible

Turbomachines have varying degrees of energy efficiency depending on their design and operating conditions (correct)

Energy losses in turbomachines are always significant

What is the relationship between energy losses and the efficiency of turbomachines?

Lower energy losses lead to higher efficiency (correct)

Higher energy losses lead to higher efficiency

Efficiency is not affected by energy losses

Energy losses and efficiency are not related

What is the primary cause of energy losses in turbomachines?

Friction between the rotor and stator blades Signup and view all the answers

Which of the following factors has the greatest impact on the efficiency of a turbomachine?

The design of the blades Signup and view all the answers

What is the purpose of the casing in a turbomachine?

To prevent fluid leakage Signup and view all the answers

Which of the following factors can affect the performance characteristics of turbomachines?

Type of fluid and operating temperature Signup and view all the answers

What is the role of operating points in determining the performance characteristics of turbomachines?

Operating points determine the performance characteristics of turbomachines Signup and view all the answers

Which of the following is a possible application of turbomachines?

Power generation and water treatment Signup and view all the answers

Which of the following dimensionless parameters is used to quantify the degree of blade loading in turbomachines?

Specific speed Signup and view all the answers

Which of the following dimensionless parameters is used to quantify the degree of flow swirl in turbomachines?

Swirl number Signup and view all the answers

Which of the following dimensionless parameters is used to quantify the degree of flow diffusion in turbomachines?

Diffusion factor Signup and view all the answers

What is the purpose of the diffuser in a turbomachine?

To convert kinetic energy to pressure energy Signup and view all the answers

What is the main function of the rotor in a turbomachine?

To convert pressure energy into kinetic energy Signup and view all the answers

What is the difference between an impulse and a reaction turbine?

The type of rotor used Signup and view all the answers