Week Twelve
Požadavky na absolvování
Information about week twelve.
Tasks and Dates
Activity One
Listen to the main part of a presentation. Complete the missing words and phrases. The main part consists of three parts. You can listen as many times as you need. When you finish, check your answers in QUIZ 12.1
1) ______________________ you know that there are many types of turbines. Our company develops and improves turbines for wind power station. All turbines work on the same principle. They 2) ________________ some kind of energy (wind, sun, water,
thermal …) to mechanical energy. 3) ____________________ a turbine generates a rotary motion, it is particularly suitable for generating electricity. 4) ____________________ the working principle of turbines.
5) ____________________ the parts of a simple turbine. A simple turbine usually consists of
blades, a shaft and a generator. The blades are moved by some kind of energy
6) _______________________ the wind. The wind rotates the blades and the rotary motion of
the blades is transmitted via the shaft to the generator, where electricity is generated.
7) ______________________? Yes? So, 8) _____________________ to my next point.
about the noise the wind mills generate. In our laboratories we try to improve all mechanical parts of the turbine to minimize the noise generated by its operation. We look especially at the materials used for the production of the blades and shafts. 11) ___________________ attention is paid to the materials used for the production of bearings. 12) _________________ we are testing several wind turbines with a new type of bearing. During the testing, the level of generated noise will be measured and the results will be compared with the data collected last year. 13) _____________________ to the end of my third point.
thermal …) to mechanical energy. 3) ____________________ a turbine generates a rotary motion, it is particularly suitable for generating electricity. 4) ____________________ the working principle of turbines.
blades, a shaft and a generator. The blades are moved by some kind of energy
6) _______________________ the wind. The wind rotates the blades and the rotary motion of
the blades is transmitted via the shaft to the generator, where electricity is generated.
7) ______________________? Yes? So, 8) _____________________ to my next point.
9) ______________________ of my presentation I would like to focus on the improvements,
we have made to wind turbines. As 10) _____________________ many people complainabout the noise the wind mills generate. In our laboratories we try to improve all mechanical parts of the turbine to minimize the noise generated by its operation. We look especially at the materials used for the production of the blades and shafts. 11) ___________________ attention is paid to the materials used for the production of bearings. 12) _________________ we are testing several wind turbines with a new type of bearing. During the testing, the level of generated noise will be measured and the results will be compared with the data collected last year. 13) _____________________ to the end of my third point.