Question

An increase in the PV cell temperature will:

Select one or more:

a. Increase the maximum power of the cell

b. Decrease the current of the cell

c. Decrease the open circuit voltage of the cell

d. Decrease the maximum power of the cell

e. Increase the open circuit voltage of the cell

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What is the water outlet pressure of a Pelton turbine?

Select one:

a. Less than the inlet pressure

b. Greater than the inlet pressure

c. Equal to the inlet pressure

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Which of the following is a source of indirect emissions from a commercial company?

Select one or more:

a. Electricity purchased

b. Extraction of raw material to manufacture the product

c. Independently owned transport of product to customer

d. Transport of materials to site by vehicles owned and operated by the company

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Fuel Combusted	Energy Factor (GJ/t)	Emission factor kg CO2-e/GJ
		CO2	CH4	N2O
Black Coal [Non- coking]	27.0	88.2	0.03	0.2
Brown Coal	10.2	92.7	0.01	0.4
Coking Coal	30.0	90.0	0.02	0.2
Brown Coal Briquettes	22.1	93.3	0.06	0.3

Using the table above, what are the total GHG emissions of a company who consumes 25,000 tonnes of brown coal briquettes?

Answer nearest 1,000 t

Select one:

a. 28,000 t CO_2-e

b. 55,000 t CO_2-e

c. 52,000 t CO_2-e

d. 24,000 t CO_2-e

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What is the purpose of a yaw drive on wind turbines?

Select one:

a. Maintain power generation during high wind speed events

b. Communication between turbine gearbox and turbine hub

c. Maintain rotor position to be perpendicular to wind direction

d. Maintain power generation during low wind speed events

What is the specific wind power (W/m²) for a wind speed of 12 m/s?

Answer nearest 100. Assume air density is 1.21 kg/m³.

Select one:

a. 1,200

b. 1,500

c. 1,000

d. 100

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Which of the following can be considered a renewable energy source?

Select one or more:

a. Hydrogen production from solar-assisted electrolysis of water

b. Hydrogen production from oil refined hydrocarbons

c. Nuclear fission

d. Ebb and flow of the tide

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What is the p-layer of traditional solar cells doped with?

Select one:

a. Silicon atoms

b. Phosphorous atoms

c. Aluminium atoms

d. Boron atoms

Answer 1