Match the questions with the answers. Match the words with their definitions. Furnace a it is used to heat up the combustion air entering the furnace combustion

Variant 3

Vocabulary

Match the words with their definitions.

	furnace	a	it is used to heat up the combustion air entering the furnace
	combustion chamber	b	the liquid refrigerant changes state from a liquid into a vapor in it
	air heater	c	chamber within an engine in which ignition of fuel takes place
	floor tubes	d	apparatus that generates heat
	evaporator	e	are used for heating feed water

1___, 2___, 3___, 4___, 5___ 10/___

Underline the appropriate words.

1) The general construction of most axial-flow compressors is very different/similar/unliketo that of a steam turbine, although the influence of aero-experience may be seen.

2) Silver is the worst/best/commonconductor.

3) Cables with shaped-conductors and cores are usually smaller and heavier/easier/lightercables with circular cores.

4) When alternators are of sufficient size and are operating at different frequencies and terminal voltages, severe damage may result if they are suddenly connected to each other through a different/common/various bus.

5) Single fuse units have four/three/five wires.

6) The furnace, the combustion chamber and the tubes are all surrounded by water/oil/petrol.

7) To increase the efficiency of the boiler, the feed water that enters the boiler is under/pre/over heated with the help of an economizer through which, the feed water passes before entering the boiler.

8) Turbocharger consists of a blower and a turbine assembly mounted on three/one/two ends of a shaft.

9) Shaft generator is a machinery system where an alternator is connected under/over/next to the shaft of the main engine.

10) In turbine generator steam is used with high pressure to rotate shaft/casing/turbinewhere the thermal energy of the steam gets converted into rotary motion.

10/___

Fill in the gaps with the words.

closed-loop liquid-cooled rotation voltage coil-bar stator windings generator

1) 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.

2) Air-cooled generators operate with _____________ cooling system.

3) The coil and _____________ allow to reduce a length of generator and increase its specific weight characteristics.

4) The construction peculiarity of _____________ generator is a filling of the stator volume with the heat resistance dielectric liquid that is also the cooling medium and a stator insulation system component.

5) A zener diode is designed for a constant _____________ output, no matter what the input voltage is, they will give a constant dc voltage output.

6) Tachogenerators can also indicate the direction of_____________ by the polarity of the output voltage.

12/___

Grammar

Choose the correct form of the verbs.

1) The AB can/could/will be able todo this work tomorrow.

2) The watch keeper will identify/identified/identify the debris 10 minutes ago.

3) The crewmembers can/must/maykeep the gangway area clean.

4) The electrician is /was/will berepairing the radio now.

5) All the electrical equipment was/is/were damaged by the water yesterday.

6) Our Bosun always performs/performed/has performed his duties perfectly.

7) The doctor has examined/examines/will examine all crewmembers thoroughly and now they can continue their voyage.

7/___

Choose the proper word.

1) The air pressure under/in front of/at the delivery end may be several times that of the inlet

2) The primary/secondary/fourth winding of the transformer, fixed to the rotor, is excited by a sinusoidal electric current ac.

3) Control type synchros are used in applications that require the largest/large/larger torques.

4) Receiving electricity from land-based networks should only be carried without/between/out through the ship’s switchboard Shore power.

5) Power supply vessel from shore power must be carried out by/at/in regular hose cable.

6) It may be said in general that the axial compressor is the most/more/better compact of the two in the matter of overall diameter.

7) The operation of a centrifugal compressor is analogous above/to/withinan ordinary centrifugal water pump.

8) The armature rotates below/at/withina fixed magnetic field, so that its rotation induces electromotive force (voltage) proportional to the shaft speed.

9) The process of steam generation starts when the feed water enters the steam drum through/behind/under both internal tubes and the tubes that surround the furnace.

10) The furnaces are located above/below/amongthe tubes and drum.

20/___

Match the questions with the answers.

	What information did he transmit?	a	On the box in the engine room
	Why were the bearings in bad operation condition?	b	The chief engineer can
	Where have you put safety glasses?	c	At 2 p.m. tomorrow
	Who can give the newcomers a good advice?	d	Because of overheating of bearings
	How will they keep dairy products?	e	About oil spill near the coast
	When is the vessel leaving the port?	f	The surveyor has
	Which of the visitors has necessary documents?	g	They will put them into refrigerators

1___, 2___, 3___, 4___, 5___, 6___, 7___ 7/___

Reading