电子技工英语题库.docx

1、电子技工英语题库船舶電子技工題庫 電氣系 12級船電班 Thursday, January 09, 2014【关联题】In synchronous machines, a direct current is applied to the rotor winding, which then produces a rotor magnetic field. The rotor is then turned by a prime mover producing a rotating magnetic field. “Field windings applies to the windings tha

2、t produce the main magnetic field in a machine, and “armature windings applies to the windings where the main voltage is induced. For synchronous machines, the field windings are on the rotor, so the terms“rotor windings and “field windings are used interchangeably. The rotor of a synchronous genera

3、tor is a large electromagnet and the magnetic poles on the rotor can either be salient or non-salient construction. Non-salient pole rotors are normally used for rotors with 2 or 4 poles rotor, while salient pole rotors are used for 4 or more poles rotor.(1)The prime mover mentioned in the passage d

4、oes not include.A. diesel engine B. wind power C. Water power(2) Non-salient pole rotors are normally used for those withpoles.A. not more than 2 pairsB. not more than 4 pairsC. more than 2 pairs(3)Which of the following statements is not TRUE?A. Field windings produce the main magnetic fieldB. A di

5、rect current is used to produce magnetic field C. The main voltage is produced by armature windings(4)The word “salient means.A. prominentB. pointing outwards C. not iceable【单项选择】The English for “兆欧表is.A.Megger B.Voltmeter C.Multimeter【单项选择】Theis used to measure current.A.ammeterB.voltmeterC.wattmet

6、er【单项选择】is a vertical height between the sea level and the bottom of the ship.A.LOAB.BeamC.Breadth【单项选择】Theof the M/E is 5500kw at 115rpm.A.outputB.temperatureC.speed【单项选择】The insulation class of an electric motor indicates its.A.Maximum input of horsepower.B.Maximum temperature rise of the insulati

7、on materialC.Maximum input of kilowatts【单项选择】The English for “电压表is.A.VoltmeterB.SynchrometerC.Ammeter【单项选择】The SOLAS Convention is the main international convention.A.Covering safety of life.B.About marineC.About marine pollution prevention【单项选择】is used to measure the voltage.A.SynchrometerB.Ammete

8、rC.Voltmeter【单项选择】The indicator cock is fixed on the cylinder. The meaning of “indicator cock is. A.示功阀B.排气阀C.安全阀【单项选择】Voltage will always lead current in a/an.A.inductive circuitB.capacitive circuitC.magnetic circuit【单项选择】Remote control means that. A.The system is controlled automatically.B.The sys

9、tem is manned manuallyC.The system is situated remotely from the operator【单项选择】The star-delta starter is an effective method ofvoltage starting of a motor.A, the reducedB. increasedC. unchanged 【单项选择】The number of cycles per second occurring in AC voltage is known as the.A.wave formB.phase angleC.fr

10、equency【单项选择】De-ballasting of STARBOARD No.1 ballast tk. The meaning of “STARBOARD No.1 ballast tank is.A,前尖舱C后尖舱【单项选择】The English for “二极管is.A, thyristorB. DiodeC. transistor【单项选择】Which of the following mechanical ponents has the function for housing the connection terminal box?A.A stator B.A rotor

11、C.A chassis【单项选择】Before doing maintenance on electrical equipment, you should.A.with a test pen in handB.turn on power firstC.turn off power first【单项选择】If a fire ignites in the engine room as a result of a high pressure fuel oil leak, you should FIRST.A.find a soda acid extinguisher B.shut off the f

12、uel oil supplyC.secure the ventilation【单项选择】High values of ohms per voltany change in circuit characteristics.A.denoteB.minimizeC.indicate【单项选择】Which of the following statements about the short-circuit protection is not true?A.It is often provided to cater for terminal flashoversB.It is provided bec

13、ause faults between phases often occurC.It is often provided to cater for major stator winding faults【单项选择】 Conductor insulation designed for 600V should indicate a resistance of.A.600,00 or lowerB.60,00 or higherC.600,00 or higher【单项选择】SOLAS stands for.A.the International Convention for the prevent

14、ion from shipB.the International Convention on Standards of Training, Citification and Watch keeping for SeafarersC.the International Convention for the Safety of the Life at Sea 【单项选择】Which of the following materials is a good insulator?A.glassB.aluminumC.steel【单项选择】If you are asked to accept deliv

15、ery of stores and spare parts, you should.A.accept all itemsB.refuseC.make clear of your authority【单项选择】If an oil spill occurs on deck, you should cover the area with absorbent material. The meaning of “oil spill is.A.着火B.搁浅C.溢油【单项选择】Which one of the following is not safety precaution?A.safety shoes

16、B.jacketC.safety cap【单项选择】Which of the following is not one of the incorrect operating conditions of shipgenerators?A.pile records regularlyB.reverse power protectionC.outside short circuit protection【单项选择】The English for“污水泵is.A.boiler feed water pumpB.sewage pumpC.fuel transfer pump【单项选择】We should

17、 pay attention to thewhen welding and cutting?A.WaterB.AirC.Fuel oil【单项选择】The Safety of Life at Sea Conventions was developed by theA.IMDG conferenceB.International Maritime OrganizationC. American Bureau of Shipping【单项选择】Under the terms of ISPS code, shipping panies are required to designate a pany

18、 Security Officer for the pany and afor each of its ships.A.Ship Security OfficerB.Designated Person AshoreC.Internal Auditor【单项选择】The fresh water generator is used produce fresh water. The meaning of fresh water generatoris.A.空压机B.绞缆机C.造水机【单项选择】When measuring AC current flow, you must always connec

19、t the meter.A.in parallel with the power source and load B.in series with the power source and loadC.insuring correct polarity【单项选择】When the voltage remains constant and the resistance is increased in a series circuit, the current.A.decreasesB.increasesC.increases by the square of the original value

20、【单项选择】bilge water to oily water separator.A.TransferB.Pump outC.Start【单项选择】The ballast water can be stored in the double bottom. The meaning of “double bottom is.A.涡轮增压器B.双层底C.油底壳【单项选择】Which is not one of the possible functions of the loss-of load protection?A.It can allow a motor to recover when th

21、e voltage is restored.B.It can stop a motor in case of a failure in a mechanical transmission.C. It can be used to protect a pump against being unprimed.【单项选择】What type of oil is NOT covered in the oil pollution laws?A.main switchboardB.emergency switchboardC.main busbar【单项选择】The Chinese for “fuel o

22、il system is.A.冷却系统B.燃油系统C.润滑系统【单项选择】Electrical circuits are protected against overheating by means of a/an.A.diodeB.amplifierC.circuit breaker【单项选择】In order to find out which lifeboat you are assigned, you should look at the muster list. The meaning of “muster list is.A.应变部署表B.火灾控制计划C.证书检查【单项选择】The

23、 motorman is working, “motorman means.A.机工B.服务员C.电子员【单项选择】F.W.E at 0900.F.W.E means .A.fit water engineB.finished with engineC.fished with exhaust【单项选择】Ancarrier is a tank ship designed for transporting liquefied natural gas.A.LNGB.OBOC.LPG【单项选择】The inverter may use the following except.A.IGBT sB.ThyristorsC.ICGT s【单项选择】In a deck crane, amotor is used for rotating the crane.A.LuffingB.Slewing C.Hoisting