Match the questions with the answers. Match the words with their definitions. Steam control governor a a turbine which acts as a prime mover in turbo generator and is fitted

Variant 2

Vocabulary

Match the words with their definitions.

	steam control governor	a	a turbine which acts as a prime mover in turbo generator and is fitted on the same shaft as of the alternator rotor
	alternator	b	different pressure control valves are fitted in the steam line and are controlled using governor for the flow of steam from the ship’s boiler system
	condensate pump	c	is used to convert the rotary motion of the turbine to electrical energy and its output is supplied to the main switchboard of the ship
	steam control valve	d	the heat exchanger acts as a condenser to cool down and condense all the steam from the turbine into water so that it can be pumped back to the hot well
	turbine prime mover	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) Turbine generator is a popular source of dirty/clean/low power generation on ships.

2) The cable is to be protected by air gaps/isolators/fuses or a circuit breaker located at the connection box.

3) Cables should be laid away/close/parallelfrom the hot surface.

4) To avoid electromagnetic noise caused by circulating currents, the conductive shield and cable armor is to be grounded only within/at two ends/at one endof the cable.

5) Neozed fuses are more/less/the samecompact than the diazed fuses.

6) A thyristor is a two/three/four-layer semiconductor device.

7) The motor is geared to the control transformer rotor and when the transmitter rotor moves, the servo motor turns the control transformer rotor and the mechanical load to match the previous/former/new position.

8) In a control system, a synchro will provide a voltage for conversion to torque through a voltmeter/an ohmmeter/an amplifier and a servomotor.

9) The ac tachogenerator is a small brushless alternator with a rotating multi/two/one pole permanent magnet.

10) A refrigerant is a special chemical solid/liquid/gasthat evaporates easily at low pressure, which also causes the temperature at which the solid/liquid/gaswill evaporate to be very low as well.

10/___

Fill in the gaps with the words.

to cool down contributes connected to provide made transfers

1) Mechanical refrigeration is a mechanical system or apparatus that_______________ heat from one substance to another.

2) The attemperator is a kind of cooler which is used _____________ the superheated steam to the right temperature.

3) Ship power dc network must be _____________ to ac shore networks only through the appropriate power converters.

4) Terminations and joints in all conductors shall be so_____________ as to retain the original electrical, mechanical, flame-retarding and, where necessary, fire-resisting properties of the cable.

5) The element usually made of silver is much smaller than the tinned copper used in semi-enclosed fuses so that the amount of vaporized metal is less and this_____________ to a better performance.

6) The servomotor is paired with some type of encoder _____________ position and speed feedback.

12/___

Grammar

Choose the correct form of the verbs.

1) The crewmembers can/could/will be able tosolve this problem quickly.

2) The wires was/were/areburnt by the fire yesterday.

3) The alternators have/has/will havebeen put into parallel today.

4) He doesn’t/don’t/isn’t sleeping now.

5) The electrician will exchange/exchanges/exchanged the lamps in passenger’s cabin tomorrow.

6) If it is storm we don’t/didn’t/won’tsail.

7) The wind starts/started/will start blowing two hours ago.

7/___

Choose the proper word.

1) A fuse is a protective/the most protective/more protective device which is used to prevent overloading.

2) Both cables must be laid in one bundle with mechanical bonding over/behind/between them.

3) The zener diode runs between/under/among reverse bias and when a certain voltage is reached it breaks down.

4) Fire-tube boilers consist of a cylindrical steel shell, which contains a furnace at/below/throughthe bottom.

5) The steam produced in the steam drum is known as the most wet/wetter/wetor saturated steam.

6) They act somewhat like a number in/on/ofdesk fans arranged in series.

7) The compressor blades for marine work are made in/of/with some non-ferrous material.

8) The ageing of insulation is a chemical process, which is rapidly/fastly/slow accelerated by prolonged operation at excessive temperatures.

9) For some substances compounds and resins without solvents may be used which substantially replace all the air at/on/inthe interstices.

10) Terminations are to be of a type compatible with the insulation and jacket material of the cable and are to be provided with means to ground all metallic/plastic/liquidshielding components.

20/___

Match the questions with the answers.

	What should you wear during welding operations?	a	To the nearest restaurant
	Why do you want to be a sailor?	b	For the second engineer
	Where will you go on shore?	c	Not bad. They have recovered our serious illness
	Who is he looking for?	d	In November during the storm
	How do the crewmembers feel?	e	It’s interesting, risky and you can earn a lot of money
	When was the boat damaged?	f	The AB has
	Which of these ratings has injury?	g	I should wear welding glasses, hand welding shield, welding gloves

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

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