Giáo trình English for Domestic electricity

VIETNAM MARITIME ADMINISTRATON

MARITIME COLLEGE No. 1

ENGLISH

FOR DOMESTIC ELECTRICITY

College level

(Issued in accordance with the Decision No. ... QD / dated on ... /.... /... /2017

by the rector of Vietnam Maritime College No. 1)

Hải phòng, năm2018

COPYRIGHT DECLARATION

This teaching material is in the form of textbooks, parts of this publication

may be available in whole or excerpts for educational and reference purposes.

Any other purpose that is distorted or used for business purposes is strictly

prohibited.

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ACKNOWLEDMENTS

The textbook "English for Domestic Electricity" is a learning resource for

students specializing in Domestic Electricity. The textbook consists of 5 units with

the following structure:

1. Vocabulary

2. Grammar

3. Skills

4. Practice

5. Assessment

The textbook provides students with basic electrical vocabulary and

applied terminology for domestic electricity. The textbook also provides necessary

English grammar which is usually applied in the field of this textbook mentioned.

The textbook has been compiled with the assistance of colleagues in

Foreign Language Department and Electrical Engineering Department. While

compiling, editors have also used some specialized materials published locally,

abroad and through web-sites.

Although the textbook has received comments from many experts,

colleagues, members of the Evaluation Council, this first appearance definitely has

some shortcomings. We hope that colleagues, teachers, students and those who are

interested in helping to perfect the teaching materials contribute to the application

in practice of the students at Maritime College I in general and students

specialized in domestic electricity in particular.

Any comments or suggestion, please send to the following e-mails:

1. phtqtkhcn@cdhh.edu.vn

2. tpha@cdhh.edu.vn

Finally, I would like to show my warm thank to our loved ones for their

encouragement and assistance during the process of designing this material.

Author: Tran Phuong Ha M.A

Nguyen Thi Minh Thai M.A

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TABLE OF CONTENTS

No.

1

Content

Page

Copyright declaration

Acknowledgements

Table of contents

1

2

3

4

2

3

4

List of figures

5

Contents

Unit 1: Home electrical appliances

Unit 2: The electric motor

Unit 3: Electric heating and cooling system

Unit 4: Portable generator

Unit 5: Job application

Glossary

5

16

26

35

46

64

69

84

88

98

6

7

Appendix

8

Listening transcripts

Suggested Answers

References

9

10

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LIST OF FIGURES

No.

Names of figures

Page

1

Figure 1.1. Home electrical appliances

5

2

3

Figure 1.2. Warning labels on chemicals

Figure 2.1. Electric motor

6

17

18

20

21

27

28

32

36

47

59

4

Figure 2.2. Motor armature

5

Figure 2.3. Rotor and Stator

6

Figure 2.4. Electric motor classification

Figure 3.1. Air-conditioning system

Figure 3.2. A typical heating and cooling system

Figure 3.3. Stages of heating system

Figure 4.1. Portable generator components

Figure 5.1. Form of a CV

7

8

9

10

11

12

Figure 5.2. A letter of application

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UNIT 1:

HOME ELECTRICAL APPLIANCES

Module code: MĐ.6520226.30.01

Introduction:

This unit presents common vocabulary of electrical appliances at home and

safety rules at work.

Objectives:

- Vocabulary of domestic appliances;

- Passive voice, imperatives and modal verbs

- Skills: discuss and describe domestic electrical appliances; talk about

safety rules at work;

Main content:

1. Vocabulary:

1.1 Home electrical appliances

Figure 1.1. Home electrical appliances

. Can you say the names of the above appliances?

. Where are they in houses? What do we use them for?

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Task 1: Match the new words with their Vietnamese meanings

New words

air-conditioner

cooker

dishwasher

fridge

Transcription

/ˈeə kənˌdɪʃ.ən.ər/

Vietnamese meaning

Bàn là

Máy sấy tóc

Nồi cơm

/ˈkʊk.ər/

/ˈdɪʃˌwɒʃ.ər/

/frɪdʒ/

Ấm nước

hairdryer

heater

iron

/ˈheər ˌdrɑɪ·ər/

/ˈhiː.tər/

/aɪən/

Lò vi sóng

Điều hòa không khí

Máy phát điện

Tủ lạnh

kettle

/ˈket.əl/

microwave oven

generator

washing machine

light

/ˈmaɪ.krə.weɪv/

/ˈdʒen.ər.eɪ.tər/

/ˈwɒʃ.ɪŋ məˌʃiːn/

/laɪt/

Máy hút bụi

Đèn điện

Máy rửa chén bát

Máy tính xách tay

Ti-vi

fan

/fæn/

vacuum cleaner

laptop

/ˈvæk.juːm ˌkliː.nər/

/ˈlæp.tɒp/

Máy sưởi

Máy giặt

television

/ˈtel.ɪ.vɪʒ.ən/

Quạt điện

1.2 Safety at work

Task 2: Can you guess the meaning of these warning labels on chemical?

Figure 1.2. Warning labels on chemicals

Match each label to the correct warning

a. highly flammable

d. corrosive

b. harmful

c. explosive

f. toxic

e. oxidizing

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Task 3: Can you name some potential dangers at your workshop, laboratory, or

place of work?

e.g. danger of industrial vehicles, heavy things, etc.

Task 4: Study the safety instructions from a workshop below, then answer the

questions

a) Who are the instructions for?

b) Who wrote them?

c) What was the writer’s purpose?

1. Wear protective clothing at all time.

2. Always wear eye protection when operating lathes,

cutters, and grinders and ensure the guard is in place.

3. Keep your workplace tidy.

4. The areas between benches and around machines must

be kept clear.

5. Tools should be put away when not in use and any

breakages and losses reported.

6. Machines should be cleaned after use.

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2. Language focus:

2.1 The passive voice

S + to be + Past participle

e.g. A fridge is used for keeping food fresh and cool.

Air-conditioners are used for cooling down or warming the temperature in a

room.

Task 5: Use the passive structures to talk about the uses of home electrical

appliances

e.g. A: What is the fridge used for?

B: It is used for storing food./ It is used to store food.

Electric cooker/ cook rice or food

___________________________

Hair-drier/ dry the hair

_______________________

Microwave oven/ cook or

heat food

______________________

Fan/ create a current of cool air

__________________________

Washing machine/ wash clothes

_________________________

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2.2 Imperatives and Modal verbs

We can make safety rules in the following ways:

. Using imperatives:

V_{bare inf}+ O

Do not (Don’t) + V_{bare inf}+ O

Never/ Always + V_{bare inf}

e.g. Wear protective clothing.

Always wear protective clothing

Do not wear loose-fitting clothing.

Never smoke when working.

. Using modal verbs:

S + Must/Should be + V_ed

S + Must/Should + V_{bare inf}+ O

e.g. Protective clothing must be worn during work time.

You must wear protective clothing during work time.

Task 6: Write safety rules to limit the following unsafe working conditions

e.g. inadequate lighting => Lighting must be adequate.

a. untidy workplaces

b. badly maintained machinery

c. carelessly stored dangerous materials

d. damaged tools and equipment

e. equipment used improperly

f. equipment operated by untrained personnel

3. Skills

3.1. Reading: Accident investigation

Accident investigation

Whenever an accident occurs that results in an injury (medical case), damage of

equipment and material, or both, prompt accident investigation by the immediate

manager is required. A written preliminary investigation will be completed by the

end of the particular shift or business day on which the accident occurred.

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In no event should there be a delay of more than 24 hours. Failure to comply with

this requirement may subject the immediate manager to disciplinary action up to

and including discharge.

Without adequate accident investigation data, the Company may be subjected to

costs, claims, and legal action for which it has no defense.

As a minimum, the preliminary accident investigation report will include the

following:

1. Name, occupation, and sex of injured worker.

2. Place and date/time of accident.

3. Description of how the accident happened.

4. Immediate causes of the accident – unsafe acts and unsafe conditions.

5. Contributing causes – manager safety performance, level of worker training,

inadequate job procedure, poor protective maintenance, etc.

6. Witness(es) – name and department.

7. Corrective action taken – when.

The employee who was injured and any employee(s) who witnessed the incident

should be separately interviewed as soon as possible. A copy of the report must be

submitted to the Manager of Human Resources for review. Another copy of the

report is to be retained for a period of not less than the injured employee’s length

of employment plus five (5) years.

- Source: Oxford English for Electrical and Mechanical Engineering-

Task 7: Read the company document on safety, and then answer the following

questions

1. Who is this document for?

a. machine operatives

b. managers

c. all employees

d. injured employees

2. Who wrote this document?

a. trade union representatives

b. technician

c. manager

d. medical staff

3. What is the writer’s intention?

a. to prevent accidents

b. to ensure speedy help for injured employees

c. to protect the company

d. to investigate the accidents

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Task 8: Match these safety signs with their meanings

1

2

3

9

4

5

6

7

8

10

11

12

a. Wear safety helmet

b. Wear ear protectors

c. Wear face shield

d. Wear protective clothing

e. Wear goggles

g. Protective footwear must be worn.

h. Visibility jacket must be worn.

i. Eye, ear and head protection must be worn.

j. Safety harness must be worn.

k. Warning

f. Wear hairnets

l. Dust mask must be worn.

3.2. Writing: Accident at work report

. In an accident report, we can use some words to link between ideas. Such

linking words are: because/ because of; due to; moreover/in addition/

besides; for example/ for instance, but/however; so/therefore, etc.

Task 9: Show the link between these ideas using appropriate linking words

E.g. Suitable protection should be worn. Safety helmets should be worn

where there is a danger of falling objects.

=> Suitable protection should be worn. For example, safety helmets should

be worn where there is a danger of falling objects.

a) Many accidents happen.

Workers’ carelessness

b) Education can reduce accidents.

It is important that all workers receive training in basic safety.

c) Eye injuries can be serious.

Goggles must be worn for grinding or cutting.

d) Safety gloves provide protection for hands.

They prevent burns.

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They reduce the danger of cuts.

e) Safety shoes protect the feet from slipping.

They prevent the feet getting caught in machinery.

f) Respirator should be worn in dusty condition.

Dust can damage the lungs.

3.3 Listening: At the department store

Task 10: Listen to the conversation at a department store.

. List all the things the woman wants to buy.

. Answer the following questions

1. How many times has the customer visited Everest Stores before?

a. Once.

b. Never.

c. A few times.

2. Why is the customer buying a hat?

a. Because she's going to her sister's wedding.

b. Because she's going on vacation in New Orleans.

c. It's not for her, but for her sister.

3. Why does she need a new toaster?

a. Her old one doesn't work anymore.

b. She needs a bigger one.

c. Her children asked her to get one.

4. What will the customer get on the 4th floor?

a. A small kitchen appliance and some information.

b. A small kitchen appliance and a large one.

c. A small kitchen appliance and a picture frame.

5. Why is she buying a DVD?

a. For her sister's birthday present.

b. Her daughter asked her to buy a DVD.

c. As a present for her daughter's birthday.

6. Why does she decide to go to the 6th floor first?

a. Because there's an escalator straight to the 6th floor.

b. Because she has to buy something that is large and heavy.

c. To get some more information.

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4. Practice

4.1 Discussion:

Task 11: - Discuss in groups accident prevention at your workshop or work place.

- Name some types of protective equipment you know.

e.g. To prevent accident at work place, we should…………………………..

There are some types of protective equipment such as ……………………

4.2 Speaking: Selling and buying home electrical appliances

Task 12: Role-play a customer and a shop assistant to make a conversation of

selling and buying one of these products

e.g. Shop assistant (A): Good morning, can I help you?

Customer (C) : Yes, I’m looking for ___________.

(A): Oh, how about this one? It’s a LG made, it’s just _____ old(s) and in

good working condition.

(C): How much is it?

(A): It’s _________

(C): How about the warranty?

(A): Well, the warranty covers this machine for 6 months.

(C): Ok, that’s good. I’ll take it.

(A): Sure, do you want to pay by _______ or __________?

(C): Cash, please.

(A): Thank you, I hope you enjoy the machine.

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Task 13: Translate into English

1. Tôi là sinh viên trường Cao đẳng Hàng Hải I.

______________________________________________________________

2. Tôi muốn trở thành một kĩ sư điện dân dụng.

______________________________________________________________

3. Có rất nhiều loại thiết bị điện dân dụng.

______________________________________________________________

4. Phải mặc đồ bảo hộ khi làm việc.

______________________________________________________________

5. Không được hút thuốc tại nơi làm việc.

______________________________________________________________

6. Rất nhiều tai nạn xảy ra do sự bất cẩn của người lao động.

______________________________________________________________

7. Mũ bảo hộ được dùng để bảo vệ đầu khỏi vật rơi.

______________________________________________________________

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5. Assessment

EVALUATION SHEET

1. Electrical appliances run on _________.

A. fossil fuel energy

B. electrical energy

D. heat energy

C. water energy

2. __________ is used to warm up the air.

A. Fan

B. Iron

C. Cooker

D. Heater

3. __________ is used to generate electric power

A. Air conditioner

C. Generator

B. Television

D. Washing machine

4. Fridge is used to ________________________.

A. store food

B. entertain

C. cook

D. cool the air

5. Wearing ________ to protect the eyes.

A.helmet

C. gloves

B. safety harness

D. goggles

6. Wearing ________ to avoid falling from height

A.safety harness

C. safety shoes

B. protective clothing

D. face mask

7. ___________ are used to bake or heat food

A. heater

C. iron

B. fridge

D. microwave oven

8. We must wear _________ when entering toxic area.

A. face shield

C. helmet

B. safety clothing

D. breathing apparatus

9. Most workplace accidents happen because of ____________.

A. laziness

B. the weather

C. carelessness

D. the equipment

10. Wearing safety shoes to avoid_____________.

A. slipping

B. cuts

C. electric shock

D. a&b&c

Question: Name some “Dos and Don’ts” at work place to prevent accidents.

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UNIT 2: THE ELECTRIC MOTOR

Module code: 6520226.30.02

Introduction:

This unit presents vocabulary of electric motor components, classifications

of electric motors

Objectives:

- Vocabulary of electric motor components

- Describing component structures

- Skills: reading and explaining diagram

Main content:

1. Vocabulary:

1.1 Electric Motor Components

Task 1: The following are the components of an electric motor.

Match the components with their Vietnamese meanings

Electric motor

components

Transcription

Vietnamese

meanings

Magnet

/ˈmæɡ.nət/

cực

Pole

/pəʊl/

nam châm

lõi sắt

Motor frame

Windings

Armature

Commutator

Bearing

Carbon brush

Wire

/ˈməʊ.tər freɪm/

/ˈwaɪn.dɪŋ/

/ˈɑː.mə.tjʊər/

/ˈkɒm.jə.teɪ.tər/

/ˈbeə.rɪŋ/

phần ứng

cổ góp

cuộn dây

vòng bi

/ˈkɑː.bən brʌʃ/

/waɪər/

khung động cơ

chổi than

dây cuốn

thanh quét

phần động

phần tĩnh

Iron

/aɪən/

Rotor

/ˈrəʊ.tər/

Stator

/´steitə/

Brushgear

/ brʌʃ ɡɪər/

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- Source: Oxford English for Electrical and Mechanical Engineering-

Figure 2.1. Electric motor

Task 2: Read the following text and match the paragraphs with the main

contents

paragraph 1

a. What electric motor are used for

b. The commutator

c. The stator

d. The armature

e. Operating principle

An electric motor is a machine for converting electric energy into mechanical

energy. Motors can be designed to run on direct (dc) or alternating current (ac).

Its most important parts are the rotor, the stator and the brush gear.

The rotor is a moving part. It contains an armature, which is a set of wire

loops wound on a steel core. When current is led to the armature, these windings

produce a magnetic field. The armature and core are mounted on a shaft which

runs on a bearing. It provides a mean of transmitting power from the motor.

The rotor also contains a commutator. This consists of a number of a copper

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segments insulated from one another. The armature windings are connected to

these segments. Carbon brushes are held in contact with the commutator by

springs. These brushes allow current to pass to the armature windings. As the

rotor turns, the commutator acts as a switch making the current in the armature

alternate.

The stator does not move. It consists of magnetic and electrical conductors.

The magnetic circuit is made up of the frame and the poles. Wound round the

poles are the field coils. These form the stator’s electrical circuit. When current

is fed to them, a magnetic field is set up in the stator.

The motor operates on the principle that when a current-carrying conductor is

placed in a magnetic field, a force is produced on the conductor. The interaction

of the forces produced by the magnetic field of the rotor and the stator makes the

rotor spin.

Figure 2.2. Motor armature

Task 3: Are the following statements True or False?

Statements

True

False

1. An electric motor is a machine for converting ..............

mechanical energy into electrical energy.

..............

2. The rotor consists of an armarture which is a set of ..............

wire loops wound on a steel core.

3. The armarture windings are connected to the ..............

segments.

..............

4. The stator is a moving part.

5. When current is fed to the coils, a magnetic field is ..............

set up in the rotor.

..............

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1.2 Electric Motor Appliances

An electric motor is an electrical machine that converts electrical energy into

mechanical energy. It can be found in applications as diverse as industrial fans,

blowers and pumps, machine tools and household appliances. Electric motors can

be powered by direct current (DC) sources, such as from batteries, motor vehicles

or rectifiers, or by alternating current (AC) sources, such as from the power grid,

inverters or generators. Small motors may be found in electric watches. General-

purpose motors with highly standardized dimensions and characteristics provide

convenient mechanical power for industrial use. The largest of electric motors are

used for ship propulsion, pipeline compression and pumped-storage applications

with ratings reaching 100 megawatts. Electric motors may be classified by electric

power source type, internal construction, application, or type of motion output.

Task 4: Read the text and mark the following statements True or False

a) Electric motor changes mechanical energy into electrical energy.

b) Fan is a household appliance using electric motor.

c) AC cannot be a source of electric motor.

d) Ship propulsion is a kind of largest electric motor.

e) The applications of electric motor are very limited.

2. Language Focus:

Describing components structure:

consists of

comprises

contains

Component A, B

and C

S

includes

to be composed of

to be made up of

e.g. A simple DC motor consists of a field magnet and an armature.

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