Energy Conversion Techniques

PV effect in solar cells converts solar energy into _______

• Electrical energy

• Mechanical energy

• Chemical energy

• All the above

Dye sensitized solar cells are made up of ______ material

• Conductor

• Insulator

• Semiconductor

• Superconductor

The majority charge carriers in p-type semiconductor are _______

• Electron

• Neutron

• Holes

• None of the above

A storage device that converts solar energy to electrical energy

is

• Battery

• Fuel cell

• Heat engine

• Dye sensitized solar cell

A solar water pump is an application of ________ technology

which converts solar energy into electricity to run the pumping

system

• Photovoltaic

• Photoconductive

• Photodetector

• Photomultiplier

One which has high energy density is ______

• Supercapacitor

• Ultra capacitor

• Both a & b

• All the above

Energy _______ is used when energy changes forms from one form to another

• Transformation

• Conversion

• Expantion

• All the above

Energy can neither be ______

• created

• manmade

• destroyed

• None of the above

______ is the energy of motion, due to the movement of waves, electrons, atoms, and objects.

• Kinetic energy

• Chemical energy

• Mechanical energy

• Potential energy

electrons will have ______ reaction whereas the holes have _____ reaction

• reduction, oxidation

• oxidation, absorption

• oxidation, reduction

• absorption, reduction