If two AC generators are operated in parallel, the load is distributed evenly by（）

相似题目

• The load sharing characteristics of two diesel generator operating in parallel are mostly dependent on their governor （）.

  A . load limit settings B . idle speed settings C . speed limit settings D . speed droop setting

  查看最佳答案

• When two DC generators operate in parallel, they are protected against motorizing by（）

  A . blow out coils B . governor relay C . under voltage trips D . reverse current tri

  查看最佳答案

• When two AC generators are being paralleled, the breaker should be closed with the synchroscope pointer mating in the （）

  A . "slow" direction, just before the 12 o'clock position B . "fast" direction, just after the 12 o'clock position C . "fast" direction, just before the 12 o'clock position D . "slow" direction, just after the 12 o'clock positio

  查看最佳答案

• Which two statements about the QoS policy generation phase of the Cisco SDM QoS wizard are true？ （）

  A .  The SDM QoS wizard will create two real-time traffic classes to handle VoIP and voice signaling packets. B .  The SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， and video packets. C .  The SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packets. D .  The SDM QoS wizard will create two business-critical traffic classes to handle transactional and network management packets. E .  The SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packets. F .  The SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packets.

  查看最佳答案

• Equal power factors on paralleled AC generators are maintained by an automatic （）.

  A . voltage regulator B . reverse power relay C . reverse current relay D . governor control switch

  查看最佳答案

• 1. public class OuterClass {  2. private double d1 = 1.0；  3. // insert code here  4. }  Which two are valid if inserted at line 3？（）  

  A .  static class InnerOne { public double methoda（） { return d1； } } B .  static class InnerOne { static double methoda（） { return d1； } } C .  private class InnerOne { public double methoda（） { return d1； } } D .  protected class InnerOne { static double methoda（） { return d1； } } E .  public abstract class InnerOne { public abstract double methoda（）； }

  查看最佳答案

• If two AC generators are to be operated in parallel, the load is distributed evenly by（）

  A . means of rheostat the governor settings B . a balance coil excitation C . adjusting the governor settings D . changing excitatio

  查看最佳答案

• Prior to closing the breaker when paralleling two AC generators, the recommended practice is to have the frequency of the incoming machine （）

  A . slightly less than the line frequency B . the same as the line frequency C . slightly greater than the line frequency D . All of the above

  查看最佳答案

• When the prime movers of two paralleled generators are equipped with mechanical- hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will （）.

  A . pick up more of any increase in load B . pick up less of any increase in load C . share an equal amount of any increase in load D . drop an equal amount of any decrease in load

  查看最佳答案

• Which two statements about the QoS policy generation phase of the Cisco SDM QoS wizard are true？（）

  A . the SDM QoS wizard will create two real-time traffic classes to handle VoIP， voice signaling， and video packets B . the SDM QoS wizard will create three real-time traffic classes to handle VoIP， voice signaling， video， and video packets C . the SDM QoS wizard will create four real-time traffic classes to handle VoIP， voice signaling， video， and video streaming packets D . the SDM QoS wizard will create two business-critical traffic classes to handle transactional and  network management packets E . the SDM QoS wizard will create three business-critical traffic classes to handle transactional， network management， and routing packets F . the SDM QoS wizard will create four business-critical traffic classes to handle transactional， network management， routing， and best-effort packet

  查看最佳答案

• On commonly used ships,if two A√Cgenerators are operated in parallel, the load is distributed evenly by （）.

  A . varying the D-Cexciter voltage B . varying the reluctance of the air gap C . regulating the speed of prime mover D . shorting out part of the armature winding

  查看最佳答案

• In a collapsed core design, which two benefits are provided by a second-generation Cisco MDS director（）

  A . a higher fan-out ratio B . fully redundant switches C . 100 percent port efficiency D . allI S Lscontained with inasingle chass is E . higher latency and through put than acore-edged esign switch

  查看最佳答案

• What are two possible actions an IOS IPS can take if a packet in a session matches a signature？（）

  A . reset the connection B . forward the packet C . check the packet against an ACL D . drop the packet

  查看最佳答案

• They are two dollars each but if you buy ten, you get a（）of ten per cent.

  A . discount B . recession C . depression D . discharge

  查看最佳答案

• Oracle JRockit JVM uses -Xns option to set nursery size when the generational garbage collection mode is used.  Which two JVM properties are affected by changing its size ？（）

  A .  compaction ratio limit B .  garbage collection frequency C .  garbage collection times D .  fragmentation heap size

  查看最佳答案

• In a collapsed core design， which two benefits are provided by a second-generation Cisco MDS director？ （）

  A .  a higher fan-out ratio B .  fully redundant switches C .  100 percent port efficiency D .  all ISLs contained within a single chassis E .  higher latency and throughput than a core-edge design switch

  查看最佳答案

• While troubleshooting an EIGRP routing problem you notice that one of the routers have generated a large number of SIA messages. What are two possible causes for EIGRP Stuck - In -Active routes?（）

  A . Some quer y or reply packets are lost between the routers. B . The neighboring router starts receiving route updates from this router. C . A failure causes traffic on a link between two neighboring routers to flow in only one direction(unidirectional link). D . Th e neighboring router stops receiving ACK packets from this router.

  查看最佳答案

• While paralleling two AC generators using synchronizing lamps only, both lamps will go dark when the generators are （）.

  A . running at the same speed B . grounded C . of the same polarity D . in phase

  查看最佳答案

• You are attempting to parallel two AC generators and the synchroscope pointer is revolving in the slow directionThis indicates that the frequency of the incoming machine is （）.

  A . higher than the bus frequency B . lower than the bus freouencv C . the same as the bus frequency but out of phase with it D . the same as the bus frequency, and the circuit breaker may be closed at any pointer positio

  查看最佳答案

• We’d better use the Subject-by-Subject Pattern if there are several distinct aspects between the two subjects.

  查看最佳答案

• If you are writing about two equal topics (or are not picking a favorite), consider using a point-by-point outline.

  查看最佳答案

• Click the Exhibit button. Given:Which two statements are true if a NullPointerException is thrown on line 3 of class C？ （）

  <img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/900591de4611848eaa661230b23f7c01.jpg' /> <img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/096a8f1a86972212e5c4d4c53f88ec71.jpg' /> A.The application will crash. B.The code on line 29 will be executed. C.The code on line 5 of class A will execute. D.The code on line 5 of class B will execute. E.The exception will be propagated back to line 27.

  查看最佳答案

• 请阅读Passage l，完成第小题。Passage 1Move over Methuselah. Future generations could be living well into their second century and still doing Sudoku, if life expectancy predictions are true. Increasing by two y

  A、the ageing B、the body-evolving C、the genes-repairing D、the body&39;s putting-off-damage

  查看最佳答案

• When farmers raise hogs, there are a number of external costs. In particular, hogs generate methane gas. If the marginal external cost is $100 per hog and the government imposes a tax of $200 per hog,

  A．toofewhogswillberaiseD B．thepricewillbelessthanthemarginalsocialcost． C．thepricewillbelessthanthemarginalsocialbenefit． D．thepricewillbelessthanthemarginalcosttohogfarmers．

  查看最佳答案