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WorksheetsPPS last Prelim Exam
Total questions: 15
Worksheet time: 8mins
What is the primary function of a steam turbine?
To cool steam
To condense steam
To store thermal energy
To convert thermal energy into mechanical work
Which component of a steam turbine carries the blades?
Shaft
Rotor
Nozzles
Casing
What type of turbine uses both pressure and reaction force for energy extraction?
Radial Turbine
Impulse Turbine
Reaction Turbine
Axial Turbine
Which type of steam turbine is characterized by high rotational speed?
Impulse Turbine
Non-condensing Turbine
Condensing Turbine
Reaction Turbine
What is the main principle of operation for an impulse turbine?
Steam flows radially outward
Steam is condensed to create a vacuum
Steam expands completely in the nozzles
Steam expands partially in the nozzles
Which type of turbine is more commonly used in hydroelectric power generation?
Multi-shaft Turbine
Single-shaft Turbine
Reaction Turbine
Impulse Turbine
What is a characteristic of reaction turbines?
Higher efficiency than impulse turbines for the same pressure drop
Fewer stages compared to impulse turbines
Lower efficiency than impulse turbines for the same pressure drop
Simple construction
What does the casing of a steam turbine do?
Supports the rotor
Connects the rotor to the generator
Houses the rotor and blades
Directs steam onto the blades
Which of the following is NOT a component of a steam turbine?
Shaft
Compressor
Casing
Blades
What is the role of nozzles in a steam turbine?
To support the rotor
To connect the rotor to the generator
To house the rotor
To direct high-pressure steam onto the blades
Which type of turbine operates at lower pressures to maximize energy extraction?
Condensing Turbine
Non-condensing Turbine
Impulse Turbine
Reaction Turbine
What is a common feature of modern turbines?
They only use impulse stages
They do not use compounding
They combine features of both impulse and reaction turbines
They are all single-shaft turbines
What is the main advantage of reaction turbines over impulse turbines?
Lower initial investment
Higher rotational speed
Higher efficiency for the same pressure drop
Simpler construction
What type of steam turbine is best suited for high head, low flow rate conditions?
Reaction Turbine
Impulse Turbine
Condensing Turbine
Multi-shaft Turbine
Which of the following factors influences steam turbine efficiency?
Color of the turbine
Material of the casing
Blade design
Size of the turbine
