30 Questions
What is the primary objective of a hydro power scheme?
To convert the potential energy of a mass of water into electric energy
What is the function of a surge tank in a conventional hydropower plant?
To absorb any water surges caused in the penstock or pressure tunnel
What is the purpose of a transformer in a conventional hydropower plant?
To convert alternating current to a higher voltage
What is a benefit of hydropower outside of electricity generation?
Flood control and irrigation support
What is the sequence of energy conversion in a hydropower plant?
Potential energy to mechanical energy to electrical energy
What is a characteristic of hydropower as a form of energy?
It is a clean and cost-effective form of energy
What is a characteristic of Kaplan turbines?
Axial-flow reaction turbines with adjustable runner blades
What is a characteristic of propeller turbines?
Fixed runner blades and fixed guide-vanes
What type of turbine is used for low heads?
Kaplan turbine
What type of turbine is used for high heads?
Pelton turbine
What type of turbine is derived from propeller and Kaplan turbines?
Bulb and tubular units
What is the main component of the Francis turbine that distributes water around the entire perimeter of the runner?
Scroll casing
What is a characteristic of Francis turbines?
Radial-flow reaction turbines with fixed runner blades and adjustable guide-vanes
What type of turbine is suitable for high-flow, low-head streams?
Cross-flow turbine
In which plane are the axes of the nozzles located in a Pelton turbine?
In the plane of the runner
What is the typical head range for a Turgo turbine?
30-300 m
What is a characteristic feature of the Turgo turbine's buckets?
They are shaped differently, with a 20° angle of incidence
What is a advantages of the Turgo turbine's design?
Direct coupling of turbine and generator is more likely
What is the primary purpose of a dam in an impoundment hydroelectric power plant?
To store river water in a reservoir
What is unique about a pumped storage hydroelectric power plant?
It is able to store electricity generated by other power sources
What is the purpose of a penstock in a diversion hydroelectric power plant?
To channel the flow of water to turbines
What determines when water is released from an impoundment hydroelectric power plant?
Changing electricity needs
Which type of hydroelectric power plant does not always require a dam?
Diversion
What is the ultimate purpose of a turbine in a hydroelectric power plant?
To produce electricity by activating a generator
What is the main purpose of pumped storage hydropower facilities?
To store excess energy during periods of low demand
How are hydropower plants classified based on their head?
Based on the difference in elevation between the reservoirs
What is the advantage of high-head sites in terms of development costs?
They are less expensive to develop due to smaller flow requirements
What is the capacity of a large hydropower facility?
More than 10 megawatts
What is the typical application of a small or micro hydroelectric power system?
Supplying electricity to a single home or farm
What is the classification of a hydropower facility with a capacity of 50 kilowatts?
Micro hydropower
Learn about the principle of hydropower plants, conversion of energy, and distribution of electricity. Understand the importance of renewable energy resources.
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