Answer the following questions what type of circuit has the main line and parallel branches

Series Circuit and Parallel Circuit

Compare circuits a and b. Circuit a consists of a voltage source and two resistors. The resistors are connected in series. Circuit a is a series circuit. Circuit b consists of a voltage source and two resistors. The resistors are connected in parallel. Circuit b is a parallel circuit. A parallel circuit has the main line and parallel branches.

In circuit b the value of voltage in R1 equals the value of voltage in R2. The value of voltage is the same in all the elements of a parallel circuit while the value of current is different. A parallel circuit is used in order to have the same value of

In circuit a the value of current in R1 equals the value of current in R2. The value of current is the same in all the elements of a series circuit while the value of voltage is different. A series circuit is used in order to have the same value of current.

In R1, V1=IR1 is the voltage drop in R1. In R2 the voltage equals IxR2; IR2 is the voltage drop in R2. In circuit с a trouble in one element results in no current in the whole circuit. In circuit d a trouble in one branch results in no current in that branch only, a trouble in the main line results in no current in the whole circuit.

3. Complete these sentences using the correct variant:

1. A parallel circuit has

a) parallel branches only.

b) the main line and parallel branches.

2. A parallel circuit is used in order

a) to have the same value of current in all the elements.

b) to have the same value of voltage in all the elements.

3. In a parallel circuit a trouble

a) results in no current in that branch in one branch only.

b) results in no trouble in the whole circuit.

4. No current in a parallel circuit

a) results from a trouble in one branch,

b) results from a trouble in the main line.

5. The sum of IR voltage drops

a) equals the value of voltage in the circuit.

b) is less than the smallest voltage drop.

c) is more than the value of voltage in the circuit.

4. Complete the sentences using while. Follow the model:

Model: Resistors connected in series have the same value of current.

Resistors connected in series have the same value of current while resistors connected in parallel have the same value of voltage.

2. A trouble in one element of a series circuit results in no current in the

3. In order to have the same value of current in all the elements, a series

4. No current in a parallel circuit results from a trouble in the main line

5. Answer the following questions:

1. What type of circuit has the main line and parallel branches?

2. What type of circuit is used in order to have the same value of current in all the elements?

3. What type of circuit is used in order to have the same value of voltage in all the elements?

4. What does a trouble in the main line result in?

5. What does a trouble in a branch result in?

6. What does no current in a series circuit result from?

7. How much does the sum of IR voltage drops equal?

8. What is the difference between series and parallel circuits?

5. Pair work. Ask your groupmate to draw and describe a series-parallel circuit.

Практическое занятие 4. Измерительные приборы

1. Read and learn the words:

Read and translate the text.

Meters

Among the most common meters used there are the ohmmeter, the ammeter and the voltmeter. The ohmmeter is used to measure the value of resistance. It consists of a milliammeter calibrated to read in ohms, a battery and resistors. The meter is connected in parallel and the circuit is not opened when its resistance is measured.

The readings on the scale show the measured value. The ammeter is used to measure the value of current. When the ammeter is used the circuit should be opened at one pointand the terminals of the meter should be connected to it. One

3. Complete the sentences using the correct variant:

1. The ammeter is

a) a common meter.

b) an uncommon meter.

2. In order to measure the value of current

a) the ohmmeter is used,

b) the voltmeter is used.

c) the ammeter is used.

a) positive terminals only.

b) negative terminals only.

c) positive and negative terminals.

4. When the ammeter is used

a) the circuit should be opened.

b) the circuit should not be opened.

5. The ammeter should be connected

6. One should take into consideration that

a) the positive terminal should be connected to the negative terminal.

b) the positive terminal should be connected to the positive terminal of the source.

Практическое занятие 3. Последовательное и параллельное соединения

Lesson 3. Series Circuit and Parallel Circuit

1. Read and learn the words:

Read and translate the text.

Series Circuit and Parallel Circuit

Compare circuits a and b. Circuit a consists of a voltage source and two resistors. The resistors are connected in series. Circuit a is a series circuit. Circuit b consists of a voltage source and two resistors. The resistors are connected in parallel. Circuit b is a parallel circuit. A parallel circuit has the main line and parallel branches.

In circuit b the value of voltage in R1 equals the value of voltage in R2. The value of voltage is the same in all the elements of a parallel circuit while the value of current is different. A parallel circuit is used in order to have the same value of

In circuit a the value of current in R1 equals the value of current in R2. The value of current is the same in all the elements of a series circuit while the value of voltage is different. A series circuit is used in order to have the same value of current.

In R1, V1=IR1 is the voltage drop in R1. In R2 the voltage equals IxR2; IR2 is the voltage drop in R2. In circuit с a trouble in one element results in no current in the whole circuit. In circuit d a trouble in one branch results in no current in that branch only, a trouble in the main line results in no current in the whole circuit.

3. Complete these sentences using the correct variant:

1. A parallel circuit has

a) parallel branches only.

b) the main line and parallel branches.

2. A parallel circuit is used in order

a) to have the same value of current in all the elements.

b) to have the same value of voltage in all the elements.

3. In a parallel circuit a trouble

a) results in no current in that branch in one branch only.

b) results in no trouble in the whole circuit.

4. No current in a parallel circuit

a) results from a trouble in one branch,

b) results from a trouble in the main line.

5. The sum of IR voltage drops

a) equals the value of voltage in the circuit.

b) is less than the smallest voltage drop.

c) is more than the value of voltage in the circuit.

4. Complete the sentences using while. Follow the model:

Model: Resistors connected in series have the same value of current.

Resistors connected in series have the same value of current while resistors connected in parallel have the same value of voltage.

2. A trouble in one element of a series circuit results in no current in the

3. In order to have the same value of current in all the elements, a series

4. No current in a parallel circuit results from a trouble in the main line

5. Answer the following questions:

1. What type of circuit has the main line and parallel branches?

2. What type of circuit is used in order to have the same value of current in all the elements?

3. What type of circuit is used in order to have the same value of voltage in all the elements?

4. What does a trouble in the main line result in?

5. What does a trouble in a branch result in?

6. What does no current in a series circuit result from?

7. How much does the sum of IR voltage drops equal?

8. What is the difference between series and parallel circuits?

5. Pair work. Ask your groupmate to draw and describe a series-parallel circuit.

Практическое занятие 4. Измерительные приборы

Lesson 4. Meters

1. Read and learn the words:

Series Circuit and Parallel Circuit

Compare circuits a and b. Circuit a consists of a voltage source and two resistors. The resistors are connected in series. Circuit a is a series circuit.

Circuit b consists of a voltage source and two resistors. The resistors are connected in parallel. Circuit b is a parallel circuit.

A parallel circuit has the main line and parallel branches.

In circuit b the value of voltage in R_t \ equals the value of voltage in R₂. The value of voltage is the same in all the ele­ments of a parallel circuit while the value of current is different. A parallel circuit is J used in order to have the same value of voltage.

In circuit a the value of current in Rj
_R equals the value of current in R₂. The

-CXD— 1 value of current is the same in all the ele-

ments of a series circuit while the value of voltage is different. A series circuit is used

j |_z———- 1 _m order to have the same value of current.

In R\, Vi=IRi is the voltage drop in R\. In Ri the voltage equals IxR₂; IR₂ is the volt­age drop in Ri. In circuit с a trouble in one element results in no current in the whole circuit. In circuit d a trouble in one branch results in no current in that branch only, a trouble in the main line results in no cur­rent in the whole circuit.

2. Complete these sentences using the correct variant:

a) parallel branches only.

b) the main line and parallel branches.

2. A parallel circuit is used in a) to have the same value of current in
order all the elements.

b) to have the same value of voltage in all the elements.

3.

4.

results in no current in that branch only.

results in no trouble in the whole cir­cuit.

results from a trouble in one branch, results from a trouble in the main line.

equals the value of voltage in the cir­cuit.

is less than the smallest voltage drop, is more than the value of voltage in the circuit.

Complete the sentences using while. Follow the model:

Model: Resistors connected in series have the same value of current. Resistors connected in series have the same value of current while resistors connected in parallel have the same value of voltage.

Answer the following questions:

1. What type of circuit has the main line and parallel branches?

2. What type of circuit is used in order to have the same value of current in all the elements?

3. What type of circuit is used in order to have the same value of voltage in all the elements?

4. What does a trouble in the main line result in?

5. What does a trouble in a branch result in?

6. What does no current in a series circuit result from?

7. How much does the sum of IR voltage drops equal?

8. What is the difference between series and parallel circuits?

Pair work. Ask your groupmate to draw and describe a series-parallel circuit.

-12-

-13-

1. a) Cover the right column and read the English words. Translate them into Russian and check your translation.

b) Cover the left column and translate the Russian words back into English.

показания на шкале (прибора)

принимать во внимание

таким путем, таким образом

2. Translate into Russian (see page 98):

1. One should take into consideration the difference between these cir-

2. One should take into consideration that the ammeter is connected to the circuit in series.

3. What should one take into consideration using the ohmmeter?

Meters

Among the most common meters used there are the ohmmeter, the ammeter and the voltme­ter. The ohmmeter is used to measure the value of resistance. It consists of a milliammeter cali­brated to read in ohms, a battery and resistors. The meter is connected in parallel and the circuit is not opened when its resistance is measured. The readings on the scale show the measured value.

The ammeter is used to measure the value of current. When the ammeter is used the circuit should be opened at one point and the terminals

The ammeter should be connected in series. The readings on the scale show the measured value.

3. Complete the sentences using the correct variant:

a) a common meter.

b) an uncommon meter.

a) the ohmmeter is used.

b) the voltmeter is used.

c) the ammeter is used.

a) positive terminals only.

b) negative terminals only.

c) positive and negative terminals.

a) the circuit should be opened.

b) the circuit should not be opened.

5. The ammeter should be con- a) in series, nected b) in parallel.

6. One should take into consid- a) the positive terminal should be con-eration that nected to the negative terminal.

b) the positive terminal should be con-• nected to the positive terminal of the source.

4. Complete these sentences using while. Follow the model.

Model: The ammeter is used to measure the value of current.

The ammeter is used to measure the value of current while the ohmmeter is used to measure the value of resistance.

1. The ohmmeter is used to measure the value of resistance.

2. The ammeter is connected in series.

3. When the ammeter is used to measure the value of current the circuit should be opened

— 15-

5. Pair work. Put these questions to your groupmate. Let him/her answer
them.

1.What is the ammeter used for?

2. What is the voltmeter used for?

3. What is the ohmmeter used for?

4. What terminals does a meter have?

5. Should the measured circuit be opened when the voltmeter is used?

6. Should the measured circuit be opened when the ammeter is used?

7. In what way should the voltmeter be connected to the circuit?

8. In what way should the ammeter be connected to the circuit?

9. What is the difference between a voltmeter and an ammeter?

10. What common meters are used to measure the values in a circuit?

6. Solve the following problems:

1. Suppose the ammeter scale reads 1.9 amp, the voltmeter scale reads 2.4 V; how much is the value of resistance in the measured circuit?

2. Suppose the ohmmeter scale reads 75 ohms, the voltmeter scale reads 220 V; how much is the value of current in the measured circuit?

3. Suppose that you have a series circuit consisting of three resistors and a voltage source. Ri = 0.18 ohm, R₂= 1.15 ohms, R₃ = 2 ohms, 1=10 amp. Find the voltage drop across each resistor; find the value of voltage in the circuit. Suppose Rj gets open. What does it result in?

4. Two resistors are connected in series. Ri = 7,000, R₂= 2,200, 1 = 110 amp. Find the voltage drop across each resistor. Suppose no current passes through the circuit, what does it result from?

Дата добавления: 2015-06-30 ; просмотров: 492 ; Нарушение авторских прав

A) Cover the right column and read the English words. Translate them into Russian and check your translation

Meters

4.

3.

Series Circuit and Parallel Circuit

B) Cover the left column and translate the Russian words back into English.

A) Cover the right column and read the English words. Translate them into Russian and check your translation.

— 10-

-.11-

Compare circuits a and b. Circuit a consists of a voltage source and two resistors. The resistors are connected in series. Circuit a is a series circuit.

Circuit b consists of a voltage source and two resistors. The resistors are connected in parallel. Circuit b is a parallel circuit.

A parallel circuit has the main line and parallel branches.

In circuit b the value of voltage in R_t \ equals the value of voltage in R₂. The value of voltage is the same in all the ele­ments of a parallel circuit while the value of current is different. A parallel circuit is J used in order to have the same value of voltage.

In circuit a the value of current in Rj
_R equals the value of current in R₂. The

-CXD— 1 value of current is the same in all the ele-

ments of a series circuit while the value of voltage is different. A series circuit is used

j |_z———- 1 _m order to have the same value of current.

In R\, Vi=IRi is the voltage drop in R\. In Ri the voltage equals IxR₂; IR₂ is the volt­age drop in Ri. In circuit с a trouble in one element results in no current in the whole circuit. In circuit d a trouble in one branch results in no current in that branch only, a trouble in the main line results in no cur­rent in the whole circuit.

2. Complete these sentences using the correct variant:

a) parallel branches only.

b) the main line and parallel branches.

2. A parallel circuit is used in a) to have the same value of current in
order all the elements.

b) to have the same value of voltage in all the elements.

results in no current in that branch only.

results in no trouble in the whole cir­cuit.

results from a trouble in one branch, results from a trouble in the main line.

equals the value of voltage in the cir­cuit.

is less than the smallest voltage drop, is more than the value of voltage in the circuit.

Complete the sentences using while. Follow the model:

Model: Resistors connected in series have the same value of current. Resistors connected in series have the same value of current while resistors connected in parallel have the same value of voltage.

Answer the following questions:

1. What type of circuit has the main line and parallel branches?

2. What type of circuit is used in order to have the same value of current in all the elements?

3. What type of circuit is used in order to have the same value of voltage in all the elements?

4. What does a trouble in the main line result in?

5. What does a trouble in a branch result in?

6. What does no current in a series circuit result from?

7. How much does the sum of IR voltage drops equal?

8. What is the difference between series and parallel circuits?

Pair work. Ask your groupmate to draw and describe a series-parallel circuit.

-12-

-13-

1. a) Cover the right column and read the English words. Translate them into Russian and check your translation.

b) Cover the left column and translate the Russian words back into English.

показания на шкале (прибора)

принимать во внимание

таким путем, таким образом

2. Translate into Russian (see page 98):

1. One should take into consideration the difference between these cir-

2. One should take into consideration that the ammeter is connected to the circuit in series.

3. What should one take into consideration using the ohmmeter?

Among the most common meters used there are the ohmmeter, the ammeter and the voltme­ter. The ohmmeter is used to measure the value of resistance. It consists of a milliammeter cali­brated to read in ohms, a battery and resistors. The meter is connected in parallel and the circuit is not opened when its resistance is measured. The readings on the scale show the measured value.

The ammeter is used to measure the value of current. When the ammeter is used the circuit should be opened at one point and the terminals

The ammeter should be connected in series. The readings on the scale show the measured value.

3. Complete the sentences using the correct variant:

a) a common meter.

b) an uncommon meter.

a) the ohmmeter is used.

b) the voltmeter is used.

c) the ammeter is used.

a) positive terminals only.

b) negative terminals only.

c) positive and negative terminals.

a) the circuit should be opened.

b) the circuit should not be opened.

5. The ammeter should be con- a) in series, nected b) in parallel.

6. One should take into consid- a) the positive terminal should be con-eration that nected to the negative terminal.

b) the positive terminal should be con-• nected to the positive terminal of the source.

4. Complete these sentences using while. Follow the model.

Model: The ammeter is used to measure the value of current.

The ammeter is used to measure the value of current while the ohmmeter is used to measure the value of resistance.

1. The ohmmeter is used to measure the value of resistance.

2. The ammeter is connected in series.

3. When the ammeter is used to measure the value of current the circuit should be opened

— 15-

5. Pair work. Put these questions to your groupmate. Let him/her answer
them.

1.What is the ammeter used for?

2. What is the voltmeter used for?

3. What is the ohmmeter used for?

4. What terminals does a meter have?

5. Should the measured circuit be opened when the voltmeter is used?

6. Should the measured circuit be opened when the ammeter is used?

7. In what way should the voltmeter be connected to the circuit?

8. In what way should the ammeter be connected to the circuit?

9. What is the difference between a voltmeter and an ammeter?

10. What common meters are used to measure the values in a circuit?

6. Solve the following problems:

1. Suppose the ammeter scale reads 1.9 amp, the voltmeter scale reads 2.4 V; how much is the value of resistance in the measured circuit?

2. Suppose the ohmmeter scale reads 75 ohms, the voltmeter scale reads 220 V; how much is the value of current in the measured circuit?

3. Suppose that you have a series circuit consisting of three resistors and a voltage source. Ri = 0.18 ohm, R₂= 1.15 ohms, R₃ = 2 ohms, 1=10 amp. Find the voltage drop across each resistor; find the value of voltage in the circuit. Suppose Rj gets open. What does it result in?

4. Two resistors are connected in series. Ri = 7,000, R₂= 2,200, 1 = 110 amp. Find the voltage drop across each resistor. Suppose no current passes through the circuit, what does it result from?

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Английский язык для студентов энергетических специальностей, Луговая А.Л., 2009

Английский язык для студентов энергетических специальностей, Луговая А.Л., 2009.

Целью данного пособия Луговой А. Л. служит обучение студентов энергетических специальностей устной речи, чтению и переводу текстов по специальности.
Все тексты книги «Английский язык для студентов энергетических специальностей«, подобранны из оригинальной литературы, так же расположены в определенной логической последовательности: от описания отдельных деталей к объяснению работы различных приборов и далее – к описанию современных энергетических установок и электростанций, в том числе атомных. Данное пособие Луговой А. Л. «Английский язык для студентов энергетических специальностей» содержит серию тренировочных и контрольных упражнений (тестов), краткий грамматический раздел по грамматическим темам пособия с упражнениями, а также материалы для чтения и обсуждения прочитанного.
Предназначается для студентов энергетических специальностей ВУЗов и техникумов.

Примеры.
Answer the following questions:
1. What type of circuit has the main line and parallel branches?
2. What type of circuit is used in order to have the same value of current in all the elements?
3. What type of circuit is used in order to have the same value of voltage in all the elements?
4. What does a trouble in the main line result in?
5. What does a trouble in a branch result in?
6. What does no current in a series circuit result from?
7. How much does the sum of IR voltage drops equal?
8. What is the difference between series and parallel circuits?

Pair work. Put these questions to your groupmate. Let him/her answer them.
1. What is the ammeter used for?
2. What is the voltmeter used for?
3. What is the ohmmeter used for?
4. What terminals does a meter have?
5. Should the measured circuit be opened when the voltmeter is used?
6. Should the measured circuit be opened when the ammeter is used?
7. In what way should the voltmeter be connected to the circuit?
8. In what way should the ammeter be connected to the circuit?
9. What is the difference between a voltmeter and an ammeter?
10. What common meters are used to measure the values in a circuit?

Contents
Предисловие
1. Essential Course (Основной курс)
Unit 1
Addition and Subtraction
Unit 2
Multiplication and Division
Unit 3
Common and Decimal Fractions
Unit 4
Ohm’s Law
Unit 5
Electric Circuit
Unit 6
Series Circuit and Parallel Circuit
Unit 7
Meters
Unite
Resistors
Unit 9
Electric Cells
Unit 10
Capacitors
Unit 11
Conductors and Insulators
Unit 12
Transformers
Unit 13
Types of Current
Unit 14
Inductance and Mutual Inductance
Unit 15
Coupling
Unit 16
Filters
Unit 17
Electron Tubes
Unit 18
Use of Electron Tubes
Unit 19
Full-wave Rectifier
Unit 20
Push-pull Amplifier
Unit 21
Amplifier Stages in Series
Unit 22
Electromagnetic Relay
Unit 23
Fuses
Unit 24
Components of Electric Circuits
Unit 25
Electric Lines and Their Efficiency
Unit 26
Transmission Lines
Unit 27
Safety Earthing System. Electric Shock
Unit 28
Electric Motors
Unit 29
Faults of Motors and Ways of Their Repair
Unit 30
Electric Power Consumers and Power Systems
Unit 31
Substations
Unit 32
Hydroelectric Power Plants
Unit 33
Atomic Power Plant
Unit 34
Protection Against Environmental Pollution
2. Grammar Revision (Повторение грамматики)
Word Formation (Словообразование)
Suffixes of Nouns (Суффиксы существительных)
Suffixes of Verbs (Суффиксы глаголов)
Suffixes of Adverbs (Суффиксы наречий)
Suffixes of Adjectives (Суффиксы прилагательных)
Prefixes (Приставки)
Conversion (Конверсия)
Numerals (Числительные)
Pronoun One (Местоимение one)
The Verb (Глагол)
The English Tenses (Времена глагола)
Active Voice (Действительный (активный) залог)
Passive Voice (Страдательный (пассивный) залог)
Рекомендации по переводу
Полнозначные и служебные слова
The Verbals (Неличные формы глагола)
The Infinitive
(Инфинитив (неопределенная форма глагола))
The Participle (Причастие)
The Gerund (Герундий)
The Subjunctive Mood (Сослагательное наклонение)
The Emphatic Construction (Эмфатическая конструкция) Punctuation Marks (Знаки препинания)
3. Materials for Reading and Discussing
(Материалы для чтения и обсуждения)
Work with a Dictionary (Работа со словарем)
Texts and Assignments (Тексты и задания)
Assignments in Writing (Письменные задания)
Приложение. Irregular Verbs (Неправильные глаголы).

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