Итоговый урок 3 курс СПО по специальности "Монтаж, наладка и эксплуатация электрооборудования промышленных и гражданских зданий"

ELECTRICITY

Подготовила Ж.А. Юрицкая, преподаватель английского языка

Итоговый урок 3 курс СПО по специальности "Монтаж, наладка и эксплуатация электрооборудования промышленных и гражданских зданий" 

ELECTRICITY

- A machine for producing electricity
- Energy or force that can be used to do work
- A substance able to attract iron, either natural or by means of electric current
- A flow of electricity through something or along a wire or cable
- A supply of electric current for heating, lightning, etc
- An engine or motor whose driving-wheels turned by a current of water, steam or gas
- A closed path for an electric current

current

electricity

circuit

power

generator

magnet

turbine

ELECTRICITY

ELECTROMAGNET

GENERATOR

   The ancient Greeks knew about static electricity back
around 500 BC. They had discovered that a gold colored
material called amber could be made to attract small objects,
like bits of a feather, when the amber had been rubbed with
a piece of fur.
Ben Franklin discovered the electricity in
lightning in 1752, although nobody knows exactly how he
did his experiment. Franklin was a careful scientist, and
would have known that flying a kite in a thunderstorm could
have deadly effects,. Both the ancient Greeks
and Ben Franklin had discovered examples of naturally
occurring electricity. Their discoveries were amazing in
their time, but not really useful yet. One of the first practical
uses of electricity occurred in England in 1858, when
electricity was first used to power the lamp in a house. 

Electricity is used in homes, and also to power industry, and to provide communication and transportation. Home uses of electricity include heat and light, as well as power to run appliances and games. Factories use electricity to power the machines used to produce all kinds of goods. Communication systems that depend on electricity include telephone service, television and radio, and the Internet. There are streetcars and subways powered by electricity. Other types of transportation, such as planes and ships, depend on electricity for navigation equipment.

ELECTRICITY

E
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A
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Electricity occurs in 2 different forms

Static
Is stationary
E.g. Brush your hair

Current
Flows around circuit
E.g. turn on light

to increase
to turn out (of)
closed
step-down
alternating
final
conductor
conduction
variable
disadvantage
parallel
negative

To turn into (on)
Insulator
To decrease
Direct
Initial
Opened
Step-up
Advantage
Series
Positive
Resistance
Constant

Static Electricity

Occurs with materials which are insulators
Rubbing adds or removes electrons
Object becomes charged
Like objects repel, unlike attract

Current Electricity

Electrons flow through a conductor

Negative to positive

Circuit = continuous path for electrons to flow

Needs energy supply

Energy user

Find the English equivalents in B to the Russian words in A.  A B

Выпрямитель
Обмотка
Первичный
Передавать
Нить накала
Частота
Переменный
Сопротивление
Емкость
Измерительный прибор
Клемма
Заряд
Цепь
Падение напряжения
Обрыв
Повреждение

Capacitor
Insulator
Early
To transmit
Coil
Alternation
Different
Trouble
Capacity
Insulator
Battery
Line
Voltage
Distance
Plane
trouble

Condenser
Voltage
Primary
To keep
Filament
Resistance
Direct
Function
Value
Meter
Terminal
Charge
Circuit
Trouble
Short
advantage

Rectifier
Winding
Secondary
To store
Gap
Frequency
Alternating
Resistance
Main
Current
Resistor
Short
Current
Voltage drop
Open
load

Types of Current

AC  Alternating current  charges continuously change direction forward and back at 60 Hz
DC  Direct current  charges move in one direction

http://www.neok12.com/quiz/ELECTR01

http://www.neok12.com/quiz/ELECTR04

http://www.neok12.com/quiz/ELECTR02

http://www.neok12.com/quiz/ELECTR05

COIL

OIL

GAS

GEOTHERMAL
POWER

ELECTRICITY

Compare the world electricity generation in 2002 and 2030 using the model:
Generation of electricity from gas in 2030 will be higher than in 2002.

Hydroelectric power plants

Hydroelectric power plants use water flowing directly through
the turbines to power the generators.

In Russia there are now 10 active power plants. This one produces 1/7
of the overall electricity outcome of Russian nuclear power plants, so it is a big one.

NUCLEAR POWER PLANT

In a nuclear power plant, nuclear reactions create heat to heat water, which turns into steam, which goes through a turbine, which spins...turning the copper armature inside the generator and generating an electric current

TIDAL POWER

There are a lot of energy in waves on the sea. But it is not easy to get it.
A wave power station needs to be able to stand really rough weather,
and yet still be able to generate power from small waves. This source
of energy is renewable – the waves will cause whether we use them or not.

SOLAR POWER

Solar power is renewable. It is used for heating houses. Solar cells make electricity from sunlight. Solar cells are expensive. Solar power isn’t much use unless you live somewhere sunny. It doesn’t cause pollution and doesn’t need fuel.

Wind Power

Wind generators use wind to turn turbines that are hooked up to a generator.
Wind power is renewable as well. It doesn’t cause pollution, doesn’t need fuel.
It is necessary to put generators them where winds are reliable.

GEOTHERMAL ENERGY

The first geothermal power station was built in Italy, and the second was in New Zealand. The centre of the Earth is about 6000 degrees Celsius - hot enough to melt rock. Even a few kilometres down, the temperature can be over 250 degrees Celsius. In general, the temperature rises one degree Celsius for every 36 metres you go down. In volcanic areas, molten rock can be very close to the surface.

ADVANTAGES
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DISADVANTAGES
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