Variant 6
Vocabulary
Match the words with their definitions.
| igniter | a | apparatus that generates heat | |
| steam | b | the steam turbine shaft is provided with glands where in steam is sprayed at a pressure so that the vacuum inside the turbine casing doesnt drop | |
| furnace | c | a device for igniting a fuel mixture in an engine | |
| steam control governor | d | hot gas that water changes into when it boils | |
| vacuum pump for glands | e | is used to control the speed of the turbine generator during starting, normal operation and shutting down. It controls the quantity of the steam inlet to the turbine generator |
1___, 2___, 3___, 4___, 5___ 10/___
Underline the appropriate words.
1) From the condenser the refrigerant liquid flows/flies/evaporates through a controlling expansion valve designed to regulate it so that it is at the correct pressure for its re-entry into the evaporator.
2) There are different types of compressors used for common/different/similar uses on board.
3) The general construction of most axial-flow compressors is very different/similar/unlike to that of a steam turbine, although the influence of aero-experience may be seen.
4) Turbine generator is a popular source of dirty/clean/low power generation on ships.
5) Voltage reference set enough/too/more low.
6) Keep/hold/control generator and associated devices clean.
7) The cable is to be protected by air gaps/isolators/fuses or a circuit breaker located at the connection box.
8) Silver is the worst/best/common conductor.
9) Autotransformers have two/three/one winding.
10) The servomotor is a closed loop servomechanism that uses position feedback to control its motion and final/initial/middle position.
10/___
Fill in the gaps with the words.
| transfers the furnace in series switchboard generator insulating |
1) The compound circuit is a type of circuit where the elements are connected both _______________ and in parallel.
2) The system of tubes that surrounds_______________ is known as water wall or floor tubes.
3) The air-cooled_______________ is well-suited to the cyclic and peak operating mode, allow achieving the high extent of automatization of the technological processes, reducing the operation costs significantly.
4) Mechanical refrigeration is a mechanical system or apparatus that_______________ heat from one substance to another.
5) Terminations in all conductors of high voltage cables are to be, as far as practicable, effectively covered with suitable_______________ material.
6) An indicator light is to be provided at the main or emergency_____________ to which shore power is connected to show energized status of the cable.
12/___
Grammar
Choose the correct form of the verbs.
1) During the maneuvering operations there was/were/are emergency situation the day before yesterday.
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2) The cook has used/used/uses foam extinguisher to extinguish that fire.
3) The AB can/could/will be able to do this work tomorrow.
4) The crewmembers can/could/will be able to solve this problem quickly.
5) The electrician can/could/will be able to repair this generator tomorrow.
6) We are/were/will be alwaysallowed to use Internet on board.
7) The weather is fine and we can/could/must sunbathe.
7/___
Choose the proper word.
1) Direct current is an electric current that flows in/for/through one direction only and doesnt change its direction and magnitude
2) An electric current that changes both its direction and magnitude at/in/on fixed intervals of time is called ac
3) The air pressure under/in front of/at the delivery end may be several times that of the inlet
4) A fuse is a protective/the most protective/more protective device which is used to prevent overloading.
5) The majority of modern/more modern/ the most modern tachogenerators are permanent magnet type.
6) Compressors are used for compression of gases by changing/decreasing/increasing the volume and imparting a corresponding increase in pressure.
7) Both cables must be laid in one bundle with mechanical bonding over/behind/between them.
8) The primary/secondary/fourth winding of the transformer, fixed to the rotor, is excited by a sinusoidal electric current ac.
9) Synchros designed through/for/at terrestrial use tend to be driven at 50 or 60 hertz while those for marine use tend to operate at 400 hertz
10) Boilers on ships are used for supplying steam during/through/for various processes such as pumping, heating, cooling, cleaning and hot-water for the accommodation.
20/___
Match the questions with the answers.
| What should you do when forced draft fan is not running? | a | Because there were not any paints available | |
| Why didnt they paint the hull? | b | Go straight ahead and take the first turn to the right | |
| Where have you put safety glasses? | c | The first one | |
| Who is he looking for? | d | I should start the draft fan manually | |
| How can I get to the seaport? | e | On the box in the engine room | |
| When did the crewmembers cope with the emergency? | f | For the second engineer | |
| Which of these boilers is clogged? | g | At midnight |
1___, 2___, 3___, 4___, 5___, 6___, 7___ 7/___
Reading
