轮机长英语11规则管理级轮机英语教材中关联题13篇.docx

1、轮机长英语11规则管理级轮机英语教材中关联题13篇轮机长英语_11规则管理级轮机英语教材中关联题13篇The operation of paralleling two alternators requires the voltages to be equal and also in phase. The alternating current output of any machine is always changing, so for two machines to operate together their voltages must be changing at the same r

2、ate or frequency, and must be reaching their maximum (or any other value) together. They are then said to be in phase. Use is nowadays made of a synchroscope when paralleling two a.c. machines. The synchroscope has two windings which are connected one to each side of the paralleling switch. A pointe

3、r is free to rotate and is moved by the magnetic effect of the two windings. When the two voltage supplies are in phase the pointer is stationary in the 12 oclock position. If the pointer is rotating then a frequency difference exists and the dial is marked for clockwise rotation FAST and anti-clock

4、wise rotation SLOW, the reference being to the incoming machine frequency. To parallel an incoming machine to a running machine therefore it is necessary to ensure firstly that both voltages are equal. Voltmeters are provided for this purpose. Secondly the frequencies must be brought into phase. In

5、practice the synchroscope usually moves slowly in the FAST direction and the paralleling switch is closed as the pointer reached the 11 oclock position. This results in the incoming machine immediately accepting a small amount of load. A set of three lamps may be provided to enable synchronizing. Th

6、e sequence method of lamp connection has a key lamp connected across one phase with two other lamps cross connected over the other phases. If the frequencies of the machines are different the lamps will brighten and darken in rotation, depending upon the incoming frequency being FAST or SLOW. The co

7、rrect moment for synchronizing is when the key lamp is dark and the other two are equally bright. 87. What device is used to parallel two alternators nowadays? A. A pointer. B. Two windings C. A synchroscope D. Two synchronizing lamps 88. When two alternators are said to be in phase, _. A. their cur

8、rent outputs are changing B. their voltages are changing at the same rate C. they are connected one to each side of the paralleling switch D. they have the same maximum voltage 89. In practice, the paralleling switch is closed as the synchroscope pointer reaches the 11 oclock position while it is mo

9、ving _. A. in the FAST section B. in the SLOW section C. towards the FAST direction D. towards the SLOW direction 90. The correct moment for synchronizing is when . A. three lamps are equally bright B. three lamps darken in rotation C. the key lamp is bright and the other two lamps are dark D. the k

10、ey lamp is dark and the other two lamps are equally bright 课本第212页 轮机英语管理级教材内容关联题 仅供参考 The PSCO may determine if responsible ships personnel are familiar with their duties related to operating essential machinery, such as emergency and stand-by sources of electrical power, auxiliary steering gear, b

11、ilge and fire pumps and any other equipment essential in emergency situations. For stand-by generator engine, the responsible ships personnel should be familiar with the possibilities to start it, automatic or by hand, blackout procedures and load-sharing system. For emergency generator, they must b

12、e familiar with the actions which are necessary before the engine can be started, different possibilities to start the engine in combination with the source of starting energy and the procedures when the first attempts to start the engine fail. The responsible engineering officer should be familiar

13、with which type of auxiliary steering gear system applies to the ship, how it is indicated which steering gear unit is in operation and what action is needed to bring the auxiliary steering gear into operation. The responsible personnel ought to be familiar with the number and location of bilge pump

14、s (including emergency bilge pumps) and fire pumps (including emergency fire pump) installed on board the ship, starting procedures for those pumps, appropriate valves to operate the pumps and most likely causes of failure of bilge pump operation and their possible remedies. The PSCO may also verify

15、 whether the responsible personnel are familiar with: (1) starting and maintenance of lifeboat engine and/or rescue boat engine, (2) emergency stops, fire detection system and alarm system operation of watertight and fire doors, and (3) change of control from automatic to manual for cooling water an

16、d lube oil systems for main and auxiliary engines and maintenance procedures for batteries. 91. According to this passage, for auxiliary steering gear, the responsible ships personnel should be familiar with . A. the possibilities to start it B. the procedures when the first attempts to start it fai

17、l C. the necessary action to bring it into operation D. most likely causes of failure of it and their possible remedies 92. The possibilities to start it here means . ?the different emergency situations in which it should be started ?the likely or suitable choices of its starting methods ?the opport

18、unities to get it started A. ? B. ? C. ? D. none of ? 93. Which of the following is not mentioned in the passage as essential machinery or equipment? A. The incinerator. B. The stand-by generator engine. C. The bilge pumps. D. The watertight doors. 94. According to this passage, as to the emergency

19、generator, the responsible ships personnel must be familiar with not only the possibilities to start the engine, but also _. A. the blackout procedures B. the load-sharing system C. the indication of which unit is in operation D. the source of starting energy 课本第349-350页 Circuit breakers must be cap

20、able of making and breaking under normal conditions and also abnormal conditions such as a short circuit. As the circuit breaker must be able to withstand closing onto a fault conditions without sustaining damage, it is of heavy construction. Fitted with an over current release mid overloads with ti

21、me lags, a circuit breaker can be used as follows: to control the output of a generator; as a direct on line starter and to control outgoing feeder circuits. On modern switchboards, draw out circuit breakers may be fitted. In the open position the whole circuit breaker can be wound clear of the bus

22、bars, thus full inspection and maintenance can be achieved without the necessity of de-energizing the bus bars. The plug in contacts joining the circuit breaker to the bus bars are not capable of taking the breaking load and it is essential that the circuit breaker is in the open position before any

23、 attempt is made to withdraw it. A mechanical interlock is fitted arranged to trip the circuit breaker before the winding handle can be inserted. The breaker also has a mid position. In this position the control circuits are still connected with the bus bar connection isolated. The electrical operat

24、ion of the breaker can then be tested. Circuit breakers are normally fitted with under voltage protection and tripping is accomplished by shorting, which releases the latching in mechanism. The no-volt coil may also be open circuited by a reverse power relay and an overload trip fitted with a time d

25、elay. 83. A circuit breaker can be used as follows except . A. to control outgoing feeder circuits B. to act as a direct on line starter C. to take the breaking load on line D. to control the output of a generator 84. A draw out circuit breaker refers to a circuit breaker . A. which can be made clea

26、r of the bus bars by using a winding handle B. which can be made clear of the bus bars by plugging in contacts C. whose test can be carried out with the control circuits still connected D. whose test can be carried out with the bus bar connection isolated 85. A mechanical interlock is fitted . A. to

27、 take the breaking load when the circuit breaker is being withdrawn B. to put the circuit breaker, before being withdrawn, in the open position C. to put the circuit breaker, before being withdrawn, in the mid position D. to take the breaking load when the contacts join the circuit breaker to the bu

28、s bars 86. According to this passage, the electrical operation of this kind of circuit breaker can be tested when _ .?the Circuit breaker at mid position ?the bus bar connection is isolated ?the control circuits are linked A. ? B. ? C. ? D. ? 课本第218-219页 Under the terms of the ISPS Code, shipping co

29、mpanies are required to designate a Company Security Officer (CSO) for the company and a Ship Security Officer (SSO) for each of its ships. The CSOs responsibilities include ensuring that a Ship Security Assessment (SSA) is properly carried out, that Ship Security Plans (SSPs) are prepared and submi

30、tted for approval by the Administration and thereafter that the plan is implemented on board each ship. The Ship Security Plan should indicate the minimum operational and physical security measures that the ship itself should implement at all times (i.e. security level 1) unless required to operate

31、at a higher security level. The plan should also indicate the additional, or intensified, security measures the ship can take to move to and operate at security level 2 when instructed to do so. Furthermore, the plan should indicate the possible preparatory actions the ship could take to allow promp

32、t response to instructions that may be issued to the ship at security level 3. 1. Under the terms of the ISPS code, a shipping company is required to designate _. A. SCO B. SSO C. CSO and SSO D. SSP and SSA 2. Which one of CSO responsibilities is NOT mentioned in the passage? A. ensuring that the SSA is properly carried out B. ensuring that SSPs are prepared and submitted for approval C. ensuring that the SSA is implemented on board each ship D. performing regular security inspections of the ship 3