What is photovoltaic device? Explain P-type silicon and N-type silicon and working principle of photovoltaic device.
What is fuel cell? Explain working principle of H2−O2H_2 - O_2H2−O2 fuel cell.
What is photovoltaic device? Explain p-type silicon and n-type silicon and working principle of photovoltaic device.
What is fuel cell? Explain the working principle of H2-O2\text{H}_2\text{-O}_2H2-O2 fuel cell.
What are the functions of electrodes and electrolytes in fuel-cell? Explain the working principle of H2\text{H}_2H2-O2\text{O}_2O2 fuel cell.
What are n-type and p-type semiconductor? Explain how photovoltaic device produce electricity?
How fuel cell is different from a battery? Explain the reactions occurred on anode and cathode of methane-oxygen fuel cell.
Name some anode and cathode materials used in thermionic generator. What is saturation current density?
Explain the working principle of magneto-hydrodynamic plant with neat sketches.
What is photovoltaic device? What are p-type and n-type semiconductors? Explain the working principle of photovoltaic device. What is gap energy?
What is thermionic device? Explain working principle of thermionic device? What is saturation current density?