The mode of control employed by an alarm circuit is aA.two position controlB.single speed floating controlC.proportional speed floating controlD.reset control

题目

The mode of control employed by an alarm circuit is a

A.two position control

B.single speed floating control

C.proportional speed floating control

D.reset control


相似考题

4.第一组An automatic system usually consists of a control system and an information system. A control system is a system which measures the condition of some entity and, with the information, governs the state of a variable; i.e., speed, temperature, pressure, position, etc. The open-loop system is the simplest form. a control system may assume. It is distinguished from the closed-loop system by the lack of an input which measures the state of the controlled variable; such an input is called a feedback. In modern ships the open-loop system has practically disappeared and the closed-loop system which operates with a feed-back is extensively used. An information system serves the parallel function of monitoring system or plant performance. The monitoring function may serve a number of purposes; specifically it may indicate values of controlled variables to guide remote control operations, warn of off-limit conditions and provide record of performance. In many cases a visual and audible alarm may be provided to warn of off-limit conditions on board ship and, associated with this, the important variables will be recorded on demand. The automatic control system can be more sophisticated by incorporating digital-processing equipment, that is, a computer. This computer is usually fed with signals from all sensors. It scans the values of the sensors and generates alarm signals for off-limit conditions, acting as a super-supervisor. Sometimes, it can even make necessary and take the necessary action to optimize performance without human intervention.The closed-loop system differs from the open-loop system byA.the lack of a feedbackB.the presence of a feed backC.the lack of a computerD.the presence of a computer

更多“The mode of control employed by an alarm circuit is aA.two position controlB.single speed ”相关问题
  • 第1题:

    查看全网整体告警的操作是()

    A.Applications->Ericsson->Alarm->ViewAlarms->AlarmStatusMatrix

    B.Others

    C.Applications->Ericsson->Alarm->ViewAlarms->AlarmLogBrower

    D.Applications->Ericsson->Alarm->ViewAlarms->AlarmListViewer


    参考答案:A

  • 第2题:

    9、完善下面程序下划线的地方,实现排序: def insert_sort(lists): for i in range(len(lists)): position=i while position>0: lists[position],lists[position-1]=lists[position-1],lists[position] position-=1 print(lists) return lists


    text-decoration

  • 第3题:

    在12MHz的8x51系统里,哪一种方式一次可以定时5ms? ()。

    A.Mode 3 及 Mode 2

    B.Mode 1 及 Mode 2

    C.Mode 0 及 Mode 1

    D.Mode 1 及 Mode 3


    A

  • 第4题:

    在12MHz的8x51系统里,哪一种方式一次可以定时5ms?

    A.Mode 0 及 Mode 1

    B.Mode 1 及 Mode 2

    C.Mode 3 及 Mode 2

    D.Mode 3 及 Mode 1


    P0

  • 第5题:

    完善下面程序下划线的地方,实现排序: def insert_sort(lists): for i in range(len(lists)): position=i while position>0: lists[position],lists[position-1]=lists[position-1],lists[position] position-=1 print(lists) return lists


    mid=(low+high)/2r[mid].key>k

  • 第6题:

    update()方法中,以下哪行代码可以实现动画位置从起始位置匀速移动到目标位置?()

    A.transform.position = Vector3.Lerp(start.position, target.position, Time.time);

    B.transform.position = Vector3.Lerp(transform.position, target.position, Time.deltaTime );

    C.transform.position = Vector3.Slerp(start.position, target.position, Time.time);

    D.transform.position = Vector3.Slerp(transform.position, target.position, Time.deltaTime );


    A