Engineering

Question 1

1Wind turbines convert

Easy

A. kinetic energy of wind into electrical energy B. chemical into heat C. light into sound D. heat into light

Question 2

2A hydroelectric plant with 100 m head and 10 m³/s flow at 90% efficiency produces about (ρ = 1,000 kg/m³, g = 10 m/s²)

Hard

A. 9 MW B. 10 MW C. 0.9 MW D. 90 MW

Question 3

3Solar thermal collectors are used mainly to

Easy

A. heat water B. pump oil C. store gas D. generate wind

Question 4

4Hydroelectric power uses

Easy

A. the energy of falling or flowing water B. sunlight C. coal D. wind

Question 5

5Tidal energy comes from

Easy

A. the sun directly B. coal C. wind D. the rise and fall of the sea

Question 6

6Energy from plant and animal materials, such as wood, crop waste and biogas, is

Easy

A. geothermal energy B. tidal energy C. biomass energy D. nuclear energy

Question 7

7A wind turbine converts

Easy

A. sound into electricity B. chemical energy into heat C. the kinetic energy of moving air into electrical energy D. heat into light

Question 8

8Ghana's Bui Dam on the Black Volta generates

Easy

A. coal power B. hydroelectric power C. nuclear power D. geothermal power

Question 9

9Biogas is produced from

Easy

A. crude oil B. organic waste broken down without oxygen C. coal D. uranium

Question 10

10Geothermal energy comes from

Easy

A. the moon B. wind C. the sea surface D. heat inside the earth