Chapter 2 Multiple choice questions

* not completed

. Section 2.2 describes basic energy units. Table 2.1 (and Table A1 in Appendix A1) lists the standard prefixes for SI units. What is 1 million kWh equal to?

1 GWh correct incorrect

1000 GWh correct incorrect

1 MWh correct incorrect

1 TWh correct incorrect

* not completed

. Understanding the relation between joules, watts, and kilowatt-hours is very important. A power of 10 kW for half an hour is equal to which option?

5 kWh correct incorrect

0.5 kWh correct incorrect

0.24 kWh correct incorrect

0.30 kWh correct incorrect

* not completed

. Section 2.3 describes a range of different energy units. The standard energy unit in the USA is the BTU (British Thermal Unit). This is slightly larger than which of these alternative energy units?

Kilowatt hour correct incorrect

Kilojoule correct incorrect

Kilocalorie correct incorrect

* not completed

. Section 2.6 describes primary energy in the UK. What was the average annual growth rate of wind power in the UK between 2000 and 2018?

5% per annum correct incorrect

10% per annum correct incorrect

12.5% per annum correct incorrect

About 25% per annum correct incorrect

* not completed

. Section 2.7 describes energy use in Denmark. Figure 2.13(b) shows that in 1970 Denmark was highly dependent on imported oil. What proportion of its primary energy use consisted of oil in that year?

70% correct incorrect

80% correct incorrect

90% correct incorrect

* not completed

. Section 2.8 describes energy use in the USA. As shown in Figure 2.17(b) US coal consumption decreased by about a third between 2010 and 2018. Which fuel has mainly replaced it?

Nuclear power correct incorrect

Natural gas correct incorrect

Wind power correct incorrect

Oil correct incorrect

* not completed

. Sections 2.6-2.9 describe energy use in different countries. In 2018 which country was the largest consumer of ethanol and biodiesel?

Denmark correct incorrect

USA correct incorrect

Brazil correct incorrect

UK correct incorrect

* not completed

. Energy use in France is described in Section 2.9. Which energy source featured more strongly in France in 2018 than in any of the other countries described in Chapter 2?

Coal correct incorrect

Natural gas correct incorrect

Nuclear heat correct incorrect

Hydro power correct incorrect

* not completed

. Energy use in India is also described in Section 2.9. In 2018 India was importing large quantities of coal. Which countries were supplying most of it?

Russia and Vietnam correct incorrect

Russia and Columbia correct incorrect

Indonesia and Australia correct incorrect

* not completed

. Energy use in China is also described in Section 2.9. By how much did China's coal consumption increase between 1980 and 2018?

It increased 6-fold. correct incorrect

It increased by a factor of 4. correct incorrect

It tripled. correct incorrect

It doubled. correct incorrect