Renewable Energy Technologies

B. Silicon (Si)

Which metal is primarily used in solar cells as a semiconductor to convert sunlight into electricity?
A. Silver (Ag)
B. Silicon (Si)
C. Copper (Cu)
D. Aluminum (Al)

C. Silver (Ag)

Which metal is commonly used in solar panels as conductive paste for electrical contacts?
A. Aluminum (Al)
B. Copper (Cu)
C. Silver (Ag)
D. Cadmium (Cd)

A. Indium (In) and Gallium (Ga)

Which element is used in thin-film CIGS solar panels for light absorption?
A. Indium (In) and Gallium (Ga)
B. Nickel (Ni) and Cobalt (Co)
C. Lithium (Li)
D. Platinum (Pt)

B. Copper (Cu)

Which metal is used in solar panels for wiring and busbars to efficiently conduct electricity generated by the cells?
A. Aluminum (Al)
B. Copper (Cu)
C. Silicon (Si)
D. Cadmium (Cd)

B. Aluminum (Al)

Which metal is commonly used as the frame of solar panels to provide structural support and mounting stability?
A. Copper (Cu)
B. Aluminum (Al)
C. Silver (Ag)
D. Titanium (Ti)

A. Cadmium (Cd)

Which element is used in cadmium telluride (CdTe) thin-film solar panels as a light-absorbing semiconductor?
A. Cadmium (Cd)
B. Copper (Cu)
C. Aluminum (Al)
D. Silver (Ag)

A. Selenium (Se)

Which element is part of the CIGS (Copper Indium Gallium Selenide) thin-film solar panels that helps in converting sunlight into electricity?
A. Selenium (Se)
B. Silver (Ag)
C. Nickel (Ni)
D. Lithium (Li)

C. Steel (Fe alloyed)

Which material is primarily used in wind turbine towers and nacelles to provide structural strength and durability?
A. Aluminum (Al)
B. Copper (Cu)
C. Steel (Fe alloyed)
D. Nickel (Ni)

A. Copper (Cu)

Which metal is used in wind turbines for generator windings and electrical wiring to efficiently transmit electricity?
A. Copper (Cu)
B. Aluminum (Al)
C. Silver (Ag)
D. Titanium (Ti)

A. Aluminum (Al)

Which metal is sometimes used in wind turbine components for lightweight structural parts?
A. Aluminum (Al)
B. Copper (Cu)
C. Neodymium (Nd)
D. Steel (Fe alloyed)

B. Neodymium (Nd) and Dysprosium (Dy)

Which rare earth elements are used in permanent magnets for direct-drive wind turbine generators?
A. Lithium (Li) and Cobalt (Co)
B. Neodymium (Nd) and Dysprosium (Dy)
C. Platinum (Pt) and Palladium (Pd)
D. Nickel (Ni) and Manganese (Mn)

A. Praseodymium (Pr)

Which rare earth element is used in combination with neodymium and dysprosium to enhance the performance and temperature resistance of permanent magnets in wind turbines?
A. Praseodymium (Pr)
B. Lithium (Li)
C. Cobalt (Co)
D. Silver (Ag)

B. Lithium (Li)

Which element is the primary component of the cathode in lithium-ion batteries and is essential for storing and releasing energy?
A. Cobalt (Co)
B. Lithium (Li)
C. Nickel (Ni)
D. Graphite (C)

B. Cobalt (Co)

Which metal is used in lithium-ion battery cathodes to stabilize the structure and improve battery longevity?
A. Aluminum (Al)
B. Cobalt (Co)
C. Manganese (Mn)
D. Copper (Cu)

A. Nickel (Ni)

Which metal is added to lithium-ion battery cathodes to increase energy density and overall capacity?
A. Nickel (Ni)
B. Lithium (Li)
C. Graphite (C)
D. Silver (Ag)

A. Manganese (Mn)

Which element is used in some lithium-ion battery cathodes to improve thermal stability and safety?
A. Manganese (Mn)
B. Cobalt (Co)
C. Aluminum (Al)
D. Copper (Cu)

B. Graphite (C)

Which material is used as the anode in lithium-ion batteries for intercalation of lithium ions during charging?
A. Lithium (Li)
B. Graphite (C)
C. Nickel (Ni)
D. Aluminum (Al)

B. Copper (Cu)

Which metal is commonly used as the current collector at the anode of lithium-ion batteries to facilitate electron flow?
A. Aluminum (Al)
B. Copper (Cu)
C. Silver (Ag)
D. Nickel (Ni)

A. Aluminum (Al)

Which metal is used as the current collector at the cathode of lithium-ion batteries?
A. Aluminum (Al)
B. Copper (Cu)
C. Cobalt (Co)
D. Graphite (C)

A. Platinum (Pt)

Which metal is used as a catalyst in proton-exchange membrane fuel cells (PEMFC)?
A. Platinum (Pt)
B. Nickel (Ni)
C. Titanium (Ti)
D. Copper (Cu)

A. Palladium (Pd)

Which metal can be used as an alternative catalyst in certain types of fuel cells?
A. Palladium (Pd)
B. Aluminum (Al)
C. Silver (Ag)
D. Nickel (Ni)

A. Titanium (Ti)

Which metal is used in electrodes and bipolar plates for corrosion resistance in fuel cells?
A. Titanium (Ti)
B. Nickel (Ni)
C. Copper (Cu)
D. Aluminum (Al)

A. Nickel (Ni)

Which metal is commonly used in alkaline fuel cell electrodes?
A. Nickel (Ni)
B. Platinum (Pt)
C. Cobalt (Co)
D. Aluminum (Al)

A. Lithium (Li), Cobalt (Co), Nickel (Ni), Manganese (Mn)

Which set of metals is primarily used in EV battery cathodes to store and deliver energy?
A. Lithium (Li), Cobalt (Co), Nickel (Ni), Manganese (Mn)
B. Silver (Ag), Copper (Cu), Aluminum (Al)
C. Platinum (Pt), Palladium (Pd)
D. Graphite (C), Silicon (Si)

A. Graphite (C)

Which material is used as the anode in EV batteries for lithium intercalation?
A. Graphite (C)
B. Lithium (Li)
C. Nickel (Ni)
D. Aluminum (Al)

A. Copper (Cu)

Which metal is used for EV motor wiring and battery connections?
A. Copper (Cu)
B. Aluminum (Al)
C. Silver (Ag)
D. Nickel (Ni)

A. Aluminum (Al) and Steel (Fe)

Which metals are used in EV vehicle structures to reduce weight while maintaining strength?
A. Aluminum (Al) and Steel (Fe)
B. Copper (Cu) and Nickel (Ni)
C. Lithium (Li) and Cobalt (Co)
D. Graphite (C) and Silicon (Si)

A. Neodymium (Nd) and Dysprosium (Dy)

Which rare earth elements are used in EV motors for permanent magnets?
A. Neodymium (Nd) and Dysprosium (Dy)
B. Lithium (Li) and Cobalt (Co)
C. Copper (Cu) and Aluminum (Al)
D. Platinum (Pt) and Palladium (Pd)

C. Neodymium-Iron-Boron (NdFeB) magnet

Which of the following is considered the strongest commercially available permanent magnet, commonly used in electric vehicle motors and wind turbine generators?

A. Ferrite magnet
B. Alnico magnet
C. Neodymium-Iron-Boron (NdFeB) magnet
D. Samarium-Cobalt (SmCo) magnet