Environmental Technologies

What direction should solar panels face to be most effective?

• North

• East

• South

• West

The device that converts DC to AC is a?

• Converter

• Resistor

• Capacitor

• Inverter

Which energy source do photovoltaic panels produce?

• Electric

• Solar

• Natural gas

• Wind power

An advantage of solar thermal water heating system is that it?

• Overcomes the need for loft insulation

• Reduces CO2 emissions

• Can sell electric back into the grid

• Have relatively low maintenance costs

An air source heat pump generally will not function efficiently?

• Above 20 degrees celsius

• Above 5 degrees celsius

• Below -5 degrees celsius

• Below -20 degrees celsius

Which of the following is an alternative to a trench as a method of heat collection for ground source heat pumps?

• Natural fissure

• Borehole

• Thermal vent

• Deep well

Which of the following is a type of solar thermal collector?

• Inflated tube

• Silver tube

• Evacuated tube

• Heated tube

Biomass fuels are considered to be carbon?

• High

• Low

• Friendly

• Neutral

Do photovoltaic panels produce alternating or direct electric current?

• Alternating current

• Direct Current

Using Ohms Law, select the correct formula and answer which states the size of fuse amp needed to protect a circuit that has a 3KW immersion heater installed on a 230V supply

• V= I x R 15 amps

• P = I x V 5 amps

• I= P / V 13 amps

• V= P / I 3 amps