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Examoogle • User • info@examoogle.com • EE-2024-8821
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Advantage of hydro-electric power station is
Low operating cost
Free from pollution problems
No fuel transportation problems
All of the above
Low operating cost
Hydro-electric power stations utilize the potential energy of water stored in a reservoir to generate electricity. These stations are highly efficient, environmentally friendly, and economically viable due to the absence of fuel procurement and transportation costs.
Hydro-electric power stations utilize the potential energy of water stored in a reservoir to generate electricity. These stations are highly efficient, environmentally friendly, and economically viable due to the absence of fuel procurement and transportation costs.
P=ηρgQH — Power output where η is efficiency, ρ is density, g is gravity, Q is discharge, and H is head.
Water from a high-altitude reservoir flows through a penstock to a hydraulic turbine, converting potential energy into mechanical energy. The turbine rotates a coupled alternator, which converts the mechanical energy into electrical energy based on Faraday's law of electromagnetic induction. The efficiency is dependent on the head of water (H) and the flow rate (Q).
No combustion process occurs, leading to negligible greenhouse gas emissions.
Hydropower is a renewable energy source with low operating and maintenance costs.
The plant's lifespan is significantly longer than thermal or nuclear power plants.
Eliminates the logistical complexity of transporting massive quantities of fuel like coal.
Low operating and maintenance costs
Environmentally friendly (no air or thermal pollution)
No fuel transportation or storage logistics
High reliability and long operational life
High initial capital investment for dam construction
Geographically dependent (requires specific site conditions)
Potential impact on local ecosystems and displacement of communities
Base load and peak load power generation
Grid stabilization via pump-storage systems
Hydro power is categorized as 'Green Energy' due to its minimal carbon footprint.
Option A is correct because of the lack of fuel cost; Option B is correct due to no combustion; Option C is correct as water is available on-site, hence D is the best fit.
D is correct — Hydro-electric power stations offer multiple economic and environmental benefits, including zero fuel logistics, low operating costs, and clean energy production.
When answering 'Advantage' questions for power plants, always verify if the options cover both economic (fuel/operation) and environmental (pollution) aspects to quickly identify 'All of the above' as the likely candidate.