Match the questions with the answers.
Variant 4
Vocabulary
Match the words with their definitions.
| steam | a | is used to produce steam | |
| down comer tubes | b | hot gas that water changes into when it boils | |
| super heater | c | a blower that creates a positive pressure, forcing air into a combustion chamber | |
| steam drum | d | are used to circulate water between the drums | |
| draft fan | e | is used to dry or heat saturated steam |
1___, 2___, 3___, 4___, 5___ 10/___
Underline the appropriate words.
1) There are different types of compressors used for common/different/similaruses on board.
2) Autotransformers have two/three/one winding.
3) Most of the marine compressors used are one/two/threestaged reciprocating compressors with inter-cooling and after-cooling.
4) In measurement and control systems where directional indication is needed, servomotors/shaft generators/tachogenerators provide an easy way to determine that.
5) In terminal boxes, if conductors are not insulated, switches/phases/loads are to be separated from earth and from each other by substantial barriers of suitable insulating materials.
6) In silicon-controlled rectifier when the cathode is negatively charged relative to the anode, no circuit/current/liquid flows until a pulse is applied to the gate.
7) As the quantity of air is increased, the amount of fuel injection can/cannot/maybe increased, which in turn will increase the power.
8) In steam turbine generator the steam is supplied at a pressure to a low/high/average speed turbine which is connected to an alternator shaft.
9) In fresh water generator the high/average/low temperature is provided by the jacket cooling water of the main engine in which a portion of jacket cooling water is delivered to fresh water generator to produce fresh water.
10) The inert gas is produced by the combustion of fuel oil with air in a water-cooled combustion chamber, in which controlled/uncontrolled/unpredictable, complete combustion takes place.
10/___
Fill in the gaps with the words.
| monitor and control heat conduct single-core the furnace air heater |
1) The system of tubes that surrounds_______________ is known as water wall or floor tubes.
2) The exhaust gas of the boiler is also put to use by making it pass over an_____________, which heats up the combustion air entering the furnace.
3) All boilers are fitted with various safety fittings and control system to_____________ various aspects such as fuel oil flow rate, flow of combustion air, and feed water supply.
4) Cooling is the process of removing_____________ from spaces, objects, or materials and maintaining them at a temperature below that of the surrounding atmosphere.
5) In case of three-core cable grounding is allowed to carry out using a_____________ flexible cable.
6) When the silicon-controlled rectifier begins to conduct, and continues to_____________ until the voltage between the cathode and anode is reversed or reduced below a certain threshold value.
12/___
Grammar
Choose the correct form of the verbs.
1) The cook has used/used/usesfoam extinguisher to extinguish that fire.
2) The holds are/were/will be full of cargo tomorrow.
3) Volt/Converter/Emf is an electrical unit for measuring the external force applied to a circuit to overcome the opposition to the flow of current.
4) The vessel operates/operated/will operatein this area next year.
5) The electrical engineer examines/examined/has examined the main switchboard very thoroughly yesterday.
6) We are/were/will bealwaysallowed to use Internet on board.
7) The chief officer has/have/willinformed the coastguard about the environmental problem.
7/___
Choose the proper word.
1) An electric current that changes both its direction and magnitude at/in/on fixed intervals of time is called ac
2) 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
3) Different makes of selsyns, used in interlock systems, have the most different/more different/ differentoutput voltages.
4) Power take off system is incorporated with different kinds of frequency control system which makes sure of producing/production/ to produce power with constant frequency.
5) The tachogenerators use a rotation/to rotate/rotating armature, one end of which is attached to a machine shaft, to measure rotational speed.
6) The feed water gets to heat/heated/heating when passes through floor tubes.
7) In a torque system, a synchro will provide a low-power mechanical output sufficient to position an indicating device, actuate a sensitive switch or move light loads with/among/without power amplication.
8) High/higher/the highest voltage cables are to be installed on cable trays or equivalent when they are provided with a continuous metallic armor which is effectively bonded to earth.
9) Tinned copper fuse wire exposed to the atmosphere tends to deteriorate and will vary in performance before/after/during long periods in service.
10) Fuses are typically used for distribution applications and to the large/larger/large electrical devices such as motors, drives, etc.
20/___
Match the questions with the answers.
| What is he doing now? | a | Because there were not any paints available | |
| Why didn’t they paint the hull? | b | The deck cadet will | |
| Where do they carry the cargo? | c | At midnight | |
| Who will be on watch from 4 p.m. till 8 p.m? | d | He is having a rest | |
| How do you receive the parcels? | e | The biggest one | |
| When did the crewmembers cope with the emergency? | f | The third engineer delivers them | |
| Which of these whales has trauma? | g | In containers |
1___, 2___, 3___, 4___, 5___, 6___, 7___ 7/___
Reading