Podcast
Questions and Answers
What is the main function of turbines?
What is the main function of turbines?
- Convert solar energy into mechanical energy
- Convert electrical energy into mechanical energy
- Convert mechanical energy into electrical energy
- Convert hydraulic energy into mechanical energy (correct)
Which type of energy is converted into electrical energy by turbines?
Which type of energy is converted into electrical energy by turbines?
- Wind energy
- Hydraulic energy (correct)
- Solar energy
- Geothermal energy
What is the difference between Gross Head and Net Head in turbines?
What is the difference between Gross Head and Net Head in turbines?
- Gross Head is the head available at the inlet of the turbine, while Net Head is the head race level.
- Gross Head includes all losses, while Net Head excludes losses.
- Gross Head considers friction losses, while Net Head doesn't. (correct)
- Gross Head is the head race level when water is flowing, while Net Head is when no water is flowing.
What is the formula for calculating the Net Head in a turbine?
What is the formula for calculating the Net Head in a turbine?
Which of the following does NOT affect the Net Head of a turbine significantly?
Which of the following does NOT affect the Net Head of a turbine significantly?
Why is hydroelectric power generation considered cheaper compared to oil or coal?
Why is hydroelectric power generation considered cheaper compared to oil or coal?
What is defined as the ratio of power given by water to the runner of a turbine to the power supplied by the water at the inlet of the turbine?
What is defined as the ratio of power given by water to the runner of a turbine to the power supplied by the water at the inlet of the turbine?
Which efficiency is defined as the ratio of power at the shaft of the turbine to the power delivered by water to the runner?
Which efficiency is defined as the ratio of power at the shaft of the turbine to the power delivered by water to the runner?
What is the ratio of the volume of water actually striking the runner to the volume of water supplied to the turbine called?
What is the ratio of the volume of water actually striking the runner to the volume of water supplied to the turbine called?
If a turbine is classified based on the direction of flow through the vanes, which classification does it fall under?
If a turbine is classified based on the direction of flow through the vanes, which classification does it fall under?
In an impulse turbine, what type of energy is available at the inlet?
In an impulse turbine, what type of energy is available at the inlet?
What does the mechanical efficiency of a turbine signify?
What does the mechanical efficiency of a turbine signify?
Which specific speed category do Low specific speed turbines fall under?
Which specific speed category do Low specific speed turbines fall under?
What happens to the power as water flows over the vanes in terms of hydraulic efficiency?
What happens to the power as water flows over the vanes in terms of hydraulic efficiency?
Which part of a turbine has power going on decreasing due to hydraulic losses as water flows over the vanes?
Which part of a turbine has power going on decreasing due to hydraulic losses as water flows over the vanes?
What is defined as the ratio of power available at the shaft of the turbine to the power supplied by the water at the inlet of the turbine?
What is defined as the ratio of power available at the shaft of the turbine to the power supplied by the water at the inlet of the turbine?
What is the diameter of the jet in the design of a Pelton wheel?
What is the diameter of the jet in the design of a Pelton wheel?
In a Francis Turbine, what is the ratio of the width of the wheel to its diameter?
In a Francis Turbine, what is the ratio of the width of the wheel to its diameter?
Which turbine is suitable for a large quantity of water at low head?
Which turbine is suitable for a large quantity of water at low head?
What is the purpose of a draft tube in a turbine system?
What is the purpose of a draft tube in a turbine system?
What is the flow ratio for a Francis Turbine?
What is the flow ratio for a Francis Turbine?
What does a Kaplan Turbine utilize for energy conversion?
What does a Kaplan Turbine utilize for energy conversion?
In what direction does water enter the runner of a modern Francis Turbine?
In what direction does water enter the runner of a modern Francis Turbine?
What does 'hub' or 'boss' refer to in an axial flow reaction turbine?
What does 'hub' or 'boss' refer to in an axial flow reaction turbine?
'Vi' refers to what in a Francis Turbine?
'Vi' refers to what in a Francis Turbine?
What happens to the position of the fly-balls in the centrifugal governor when the turbine speed increases beyond normal?
What happens to the position of the fly-balls in the centrifugal governor when the turbine speed increases beyond normal?
How does the control valve respond to the movement of the sleeve in the system?
How does the control valve respond to the movement of the sleeve in the system?
What is the purpose of decreasing the area of flow of water at the outlet of the nozzle in the relay cylinder?
What is the purpose of decreasing the area of flow of water at the outlet of the nozzle in the relay cylinder?
What happens when the speed of the turbine becomes normal after a decrease in generator load?
What happens when the speed of the turbine becomes normal after a decrease in generator load?
Why does the oil under pressure from the control valve move through valve V to the servomotor?
Why does the oil under pressure from the control valve move through valve V to the servomotor?
What is the role of the horizontal lever supported over a fulcrum in the system?
What is the role of the horizontal lever supported over a fulcrum in the system?
What type of turbine is known as axial flow turbine?
What type of turbine is known as axial flow turbine?
Which part of the Pelton wheel controls the amount of water striking the buckets?
Which part of the Pelton wheel controls the amount of water striking the buckets?
What is the purpose of the casing in a Pelton turbine?
What is the purpose of the casing in a Pelton turbine?
What material are the buckets of a Pelton wheel typically made of?
What material are the buckets of a Pelton wheel typically made of?
Which turbine is named after L.A. Pelton, an American Engineer?
Which turbine is named after L.A. Pelton, an American Engineer?
What happens when the spear in the nozzle of a Pelton wheel is pushed forward?
What happens when the spear in the nozzle of a Pelton wheel is pushed forward?
What is the function of the breaking jet in a Pelton turbine?
What is the function of the breaking jet in a Pelton turbine?
What is the shape of the buckets in a Pelton wheel?
What is the shape of the buckets in a Pelton wheel?
What does the splitter do in a Pelton wheel bucket?
What does the splitter do in a Pelton wheel bucket?
What direction does water flow through a radial flow turbine?
What direction does water flow through a radial flow turbine?
What is the purpose of using a draft-tube in a reaction turbine?
What is the purpose of using a draft-tube in a reaction turbine?
Without a draft-tube, where does the kinetic energy rejected at the outlet of the turbine go?
Without a draft-tube, where does the kinetic energy rejected at the outlet of the turbine go?
What is the main purpose of governing a turbine?
What is the main purpose of governing a turbine?
How is governing of a turbine achieved?
How is governing of a turbine achieved?
What is the role of an oil pressure governor in governing a Pelton turbine?
What is the role of an oil pressure governor in governing a Pelton turbine?
What happens to the speed of a generator when there is a decrease in load?
What happens to the speed of a generator when there is a decrease in load?
Which type of draft-tube requires less space compared to others?
Which type of draft-tube requires less space compared to others?
What is true about turbines directly coupled to electric generators?
What is true about turbines directly coupled to electric generators?
Why does a reaction turbine fitted with a draft-tube have increased efficiency?
Why does a reaction turbine fitted with a draft-tube have increased efficiency?
What is the role of a gear pump in governing a Pelton turbine?
What is the role of a gear pump in governing a Pelton turbine?
What is the main purpose of turbines?
What is the main purpose of turbines?
What is the difference between Gross Head and Net Head in a turbine?
What is the difference between Gross Head and Net Head in a turbine?
What does the mechanical efficiency of a turbine signify?
What does the mechanical efficiency of a turbine signify?
Why is hydroelectric power generation considered cheaper compared to oil or coal?
Why is hydroelectric power generation considered cheaper compared to oil or coal?
What is the formula for calculating the Net Head in a turbine?
What is the formula for calculating the Net Head in a turbine?
Which efficiency of a turbine signifies the ratio of power delivered by water to the runner to the power available at the shaft?
Which efficiency of a turbine signifies the ratio of power delivered by water to the runner to the power available at the shaft?
What is the purpose of the draft-tube in a turbine system?
What is the purpose of the draft-tube in a turbine system?
In the design of a Pelton wheel, what is the diameter of the jet?
In the design of a Pelton wheel, what is the diameter of the jet?
What is the type of turbine that has water flowing parallel to the axis of shaft rotation?
What is the type of turbine that has water flowing parallel to the axis of shaft rotation?
For a Kaplan Turbine, what distinguishes it from a propeller turbine?
For a Kaplan Turbine, what distinguishes it from a propeller turbine?
What defines the hydraulic efficiency for a Francis Turbine?
What defines the hydraulic efficiency for a Francis Turbine?
In the design of a Pelton wheel, what is the depth of the buckets?
In the design of a Pelton wheel, what is the depth of the buckets?
What does the flow ratio represent in Francis Turbines?
What does the flow ratio represent in Francis Turbines?
What characterizes an inward flow reaction turbine like the Francis Turbine?
What characterizes an inward flow reaction turbine like the Francis Turbine?
What is the speed ratio for a Francis Turbine?
What is the speed ratio for a Francis Turbine?
For an axial flow reaction turbine, what part acts as the runner?
For an axial flow reaction turbine, what part acts as the runner?
What type of turbine is a Pelton wheel or Pelton turbine?
What type of turbine is a Pelton wheel or Pelton turbine?
Which part of the Pelton turbine helps to prevent splashing of water and discharge water to the tail race?
Which part of the Pelton turbine helps to prevent splashing of water and discharge water to the tail race?
What is the purpose of the breaking jet in a Pelton turbine?
What is the purpose of the breaking jet in a Pelton turbine?
What material are the buckets of a Pelton wheel typically made from?
What material are the buckets of a Pelton wheel typically made from?
What allows the jet of water in a Pelton wheel to get deflected through 160° or 170°?
What allows the jet of water in a Pelton wheel to get deflected through 160° or 170°?
What happens when the spear in the nozzle of a Pelton wheel is pushed back?
What happens when the spear in the nozzle of a Pelton wheel is pushed back?
Which part of a Pelton turbine does not perform any hydraulic function?
Which part of a Pelton turbine does not perform any hydraulic function?
What is provided to control the amount of water striking the runner in a Pelton turbine nozzle?
What is provided to control the amount of water striking the runner in a Pelton turbine nozzle?
Which part of a Pelton wheel divides the jet of water into two equal parts?
Which part of a Pelton wheel divides the jet of water into two equal parts?
What kind of flow does a Pelton turbine utilize?
What kind of flow does a Pelton turbine utilize?
What happens to the speed of the generator when the load on the generator decreases?
What happens to the speed of the generator when the load on the generator decreases?
What is the formula for calculating Hydraulic Efficiency?
What is the formula for calculating Hydraulic Efficiency?
What effect does the movement of the fly-balls in the centrifugal governor have on the sleeve?
What effect does the movement of the fly-balls in the centrifugal governor have on the sleeve?
What does Mechanical Efficiency represent in a turbine system?
What does Mechanical Efficiency represent in a turbine system?
Which turbine classification is based on the direction of flow through the runner?
Which turbine classification is based on the direction of flow through the runner?
How does the control valve respond when the sleeve in the system moves downward?
How does the control valve respond when the sleeve in the system moves downward?
What is the immediate effect of opening valve V, in the relay cylinder system?
What is the immediate effect of opening valve V, in the relay cylinder system?
What does Volumetric Efficiency measure in a turbine?
What does Volumetric Efficiency measure in a turbine?
Why does the lever turn about the fulcrum when the sleeve moves in the system?
Why does the lever turn about the fulcrum when the sleeve moves in the system?
How is Overall Efficiency defined in a turbine system?
How is Overall Efficiency defined in a turbine system?
In a reaction turbine, what happens to pressure energy as water flows through the runner?
In a reaction turbine, what happens to pressure energy as water flows through the runner?
What is the primary role of the centrifugal governor in this turbine system?
What is the primary role of the centrifugal governor in this turbine system?
What differentiates Impulse and Reaction turbines based on energy at the inlet?
What differentiates Impulse and Reaction turbines based on energy at the inlet?
'Hub' or 'boss' in an axial flow reaction turbine refers to what component?
'Hub' or 'boss' in an axial flow reaction turbine refers to what component?
What specific speed category do Medium specific speed turbines fall under?
What specific speed category do Medium specific speed turbines fall under?
What is the purpose of a draft-tube in a reaction turbine?
What is the purpose of a draft-tube in a reaction turbine?
What is the governing of a turbine defined as?
What is the governing of a turbine defined as?
Which type of draft-tube is considered most efficient?
Which type of draft-tube is considered most efficient?
What is the role of a gear pump in governing a Pelton turbine?
What is the role of a gear pump in governing a Pelton turbine?
Why is governing of a turbine necessary when it is directly coupled to an electric generator?
Why is governing of a turbine necessary when it is directly coupled to an electric generator?
What does governing of a Pelton turbine involve?
What does governing of a Pelton turbine involve?
What happens to the pressure at the outlet of the runner in a reaction turbine without a draft-tube?
What happens to the pressure at the outlet of the runner in a reaction turbine without a draft-tube?
What is the main function of turbines in a hydroelectric power plant?
What is the main function of turbines in a hydroelectric power plant?
What type of turbine is suitable for large quantities of water at low head?
What type of turbine is suitable for large quantities of water at low head?
Which part of a Pelton turbine controls the amount of water striking the buckets?
Which part of a Pelton turbine controls the amount of water striking the buckets?
What is the primary function of turbines in a hydroelectric power plant?
What is the primary function of turbines in a hydroelectric power plant?
In a turbine system, what is the Gross Head defined as?
In a turbine system, what is the Gross Head defined as?
What is the Net Head in a turbine system primarily affected by?
What is the Net Head in a turbine system primarily affected by?
Which efficiency of a turbine signifies the ratio of power delivered by water to the runner to the power available at the shaft?
Which efficiency of a turbine signifies the ratio of power delivered by water to the runner to the power available at the shaft?
What is the formula for calculating the Net Head in a turbine system?
What is the formula for calculating the Net Head in a turbine system?
Which part of a Pelton turbine is responsible for controlling the amount of water striking the buckets?
Which part of a Pelton turbine is responsible for controlling the amount of water striking the buckets?
What happens to the speed of the turbine when the load on the generator decreases?
What happens to the speed of the turbine when the load on the generator decreases?
How does the centrifugal governor respond to an increase in turbine speed?
How does the centrifugal governor respond to an increase in turbine speed?
What is the role of the oil pressure governor in controlling the turbine speed?
What is the role of the oil pressure governor in controlling the turbine speed?
How does the movement of the fly-balls in the centrifugal governor impact the control valve?
How does the movement of the fly-balls in the centrifugal governor impact the control valve?
What effect does increasing the rate of flow of water to the turbine have on turbine speed?
What effect does increasing the rate of flow of water to the turbine have on turbine speed?
How does a decrease in generator load affect the rate of flow of water to the turbine?
How does a decrease in generator load affect the rate of flow of water to the turbine?
What is the mathematical representation of Hydraulic Efficiency?
What is the mathematical representation of Hydraulic Efficiency?
What does Volumetric Efficiency represent?
What does Volumetric Efficiency represent?
What classification is based on the direction of flow through the vanes of a turbine?
What classification is based on the direction of flow through the vanes of a turbine?
Which type of turbine has the water completely enclosed in an air-tight casing?
Which type of turbine has the water completely enclosed in an air-tight casing?
What is the role of Overall Efficiency in a turbine system?
What is the role of Overall Efficiency in a turbine system?
Which parameter does Mechanical Efficiency measure in a turbine system?
Which parameter does Mechanical Efficiency measure in a turbine system?
What distinguishes High Head, Medium Head, and Low Head turbines?
What distinguishes High Head, Medium Head, and Low Head turbines?
How are hydraulic losses primarily incurred in a turbine system?
How are hydraulic losses primarily incurred in a turbine system?
Which part of a turbine system has slightly less volume of water striking it than supplied?
Which part of a turbine system has slightly less volume of water striking it than supplied?
What differentiates Impulse and Reaction turbines based on energy transfer?
What differentiates Impulse and Reaction turbines based on energy transfer?
What is the function of the draft tube in a turbine system?
What is the function of the draft tube in a turbine system?
What characterizes a Francis Turbine in terms of water discharge at the outlet?
What characterizes a Francis Turbine in terms of water discharge at the outlet?
What is the main purpose of a splitter in a Pelton wheel design?
What is the main purpose of a splitter in a Pelton wheel design?
What is the ratio called that represents the width of the wheel compared to its diameter in Francis Turbines?
What is the ratio called that represents the width of the wheel compared to its diameter in Francis Turbines?
In a Kaplan Turbine, what differentiates it from a Propeller Turbine?
In a Kaplan Turbine, what differentiates it from a Propeller Turbine?
What is the design flow ratio for Francis Turbines?
What is the design flow ratio for Francis Turbines?
What does the speed ratio represent in Francis Turbines?
What does the speed ratio represent in Francis Turbines?
In an Axial Flow Reaction Turbine, what does the hub act as?
In an Axial Flow Reaction Turbine, what does the hub act as?
What is the significance of zero whirl velocity at the outlet (Vi) in a Francis Turbine?
What is the significance of zero whirl velocity at the outlet (Vi) in a Francis Turbine?
What type of turbine is a Pelton wheel?
What type of turbine is a Pelton wheel?
Which part of a Pelton turbine controls the amount of water striking the buckets?
Which part of a Pelton turbine controls the amount of water striking the buckets?
What does the spear in the nozzle of a Pelton wheel control?
What does the spear in the nozzle of a Pelton wheel control?
What material are the buckets of a Pelton wheel primarily made of?
What material are the buckets of a Pelton wheel primarily made of?
What is the function of a breaking jet in a Pelton turbine?
What is the function of a breaking jet in a Pelton turbine?
What is the primary purpose of the casing in a Pelton turbine?
What is the primary purpose of the casing in a Pelton turbine?
What is the specific classification of a turbine where water flows from inwards to outwards radially?
What is the specific classification of a turbine where water flows from inwards to outwards radially?
What happens when a spear in the nozzle of a Pelton wheel is pushed forward?
What happens when a spear in the nozzle of a Pelton wheel is pushed forward?
What part of a Pelton wheel does NOT perform any hydraulic function?
What part of a Pelton wheel does NOT perform any hydraulic function?
What does a splitter do in a Pelton wheel bucket?
What does a splitter do in a Pelton wheel bucket?
What is the purpose of a draft-tube in a reaction turbine system?
What is the purpose of a draft-tube in a reaction turbine system?
How does the use of a draft-tube impact the net head on a reaction turbine?
How does the use of a draft-tube impact the net head on a reaction turbine?
Which type of draft-tube is considered most efficient among the commonly used ones?
Which type of draft-tube is considered most efficient among the commonly used ones?
What is the governing of a turbine defined as?
What is the governing of a turbine defined as?
Why is governing of a turbine necessary in hydroelectric power plants?
Why is governing of a turbine necessary in hydroelectric power plants?
How is governing of a Pelton turbine typically achieved?
How is governing of a Pelton turbine typically achieved?
What part of a Pelton turbine plays a key role in governing by controlling water flow?
What part of a Pelton turbine plays a key role in governing by controlling water flow?
Which scenario describes what happens when governing adjusts due to decreasing load on a hydroelectric generator?
Which scenario describes what happens when governing adjusts due to decreasing load on a hydroelectric generator?
What part is responsible for driving the gear pump in governing a Pelton turbine?
What part is responsible for driving the gear pump in governing a Pelton turbine?
In hydroelectric power generation, why is maintaining constant speed of the generator important?
In hydroelectric power generation, why is maintaining constant speed of the generator important?
