What is Biomass?

What is Biomass? 150 150 Affordable Capstone Projects Written from Scratch

Instructions

Answer the following questions and then press ‘Submit’ to get your score.

Question 1

The average solar power incident on the Earth’ surface is about

Question 2

The capacity factor of a solar PV farm (without tracking) in Southern California is approximately:

Question 3

Full sunlight is falling on a 20% efficiency solar cell of area 2 m2 at an angle of incidence of 60 degrees to the normal to the cell. What is the output power of the cell?

Question 4

Match the band gaps to the semiconductors.

CdTe 0.66 eV
1.5 eV
1.1 eV
Si 0.66 eV
1.5 eV
1.1 eV
Ge 0.66 eV
1.5 eV
1.1 eV

Question 5

Match the percentage losses in a silicon solar cell to the following:

photons with energies less than 1.1 eV 23%
10%
35%
the voltage factor loss 23%
10%
35%
incomplete charge collection 23%
10%
35%

Question 6

A photocell has a short circuit current of 25 mA, an open circuit voltage of 0.6 V and a maximum power output of 12 mW. What is its fill factor?

Question 7

A photocell has a short circuit current of 40 mA and an open circuit voltage of 0.6 V. What value of resistor across the cell would dissipate the most power?

Question 8

A factory is in a region where the insolation is 2000 kWh m-2 y-1. What approximate area of solar panels would be required to produce 100,000 kWh of electricity per annum?

Question 9

For a multilayer photocell, which of the following statements are true? Please select all that apply.

Question 10

A 100 kWp array of solar panels is located in the south west of the USA. What is the best estimate of the annual output?

Question 11

The optimum orientation for a panel located at a latitude of 40 degrees is:

Question 12

Where might solar panels be likely to be the most economic source of electricity?
Please select all that apply.

Question 13

The associated CO2 emissions from PV panels compared to fossil fuel generated electricity are about:

Question 14

By 2050 the IEA estimate that the contribution to the global electricity supply from PV could be:

Question 15

What approximate area of a PV farm in Egypt would be required to produce an output equivalent to 1 GWe continuous?

Question 16

A two junction solar cell made by adding a perovskite layer on top of a silicon solar cell could have an efficiency of about:


 

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