上海2016年上半年电机装配工：电机嵌线试题

1、上海2016年上半年电机装配工：电机嵌线试题本卷共分为2大题50小题，作答时间为180分钟，总分100分，60分及格。一、单项选择题（共 25 题，每题 2 分，每题的备选项中，只有 1 个事最符合题意） 1、通常，异步电动机额定转差率的范围是sN_。 A0.020.06 B01 C12 D10 2、按钢中碳的质量分数分类：低碳钢中碳的质量分数为_。 A0.5% B0.25%0.60% C0.60% D0.60%3、绕组绝缘结构设计总的原则之一是在保证电机运行可靠性和寿命的前提下，尽量选用_的绝缘材料。 A较薄 B较厚 C价格低 D经济 4、凸极式同步电动机的转子由转轴、磁极和_等组成。 A磁轭 B集电环 C阻尼环 D转子冲片5、SZG-20型手持式数字转速表的“CK1”为外接信号插孔，对外来信号进行频率测量，测量范围为_。 A650kHz B1050kHz C30100kHz D50100kHz 6、异步电动机装端盖时，应先安装_端盖。 A轴伸端 B非轴伸端 C左侧 D右侧 7、绕组绝缘结构设计的内容不包括_。 A防晕措施 B材料的选择 C绝缘厚度的确定 D增压速度 8、装配好的磁极

2、应根据磁极线圈接头位置的不同编上相应的序号，同时将质量接近的磁极装在_的位置上。 A相邻 B相同 C对称 D相反 9、在一般隋况下，人体触及36V以下的带电体时，没有生命危险。_ 10、凸极式同步电机转子装配时，装磁极于磁轭上，将上面已编好序号的磁极装在磁轭相应位置上。当装好第一只磁极后应接着装转子_的一只磁极。 A上部 B下部 C对面 D左侧11、测得一个电阻两端的电压为60V，通过的电流为3A，该电阻的阻值为_。 A180V B180 C20 D20A 12、介电常数随温度的升高而_。 A增大 B降低 C不变 D增大，然后再逐步降低 13、多头液(油)压机主要用于大型汽轮电机半匝式转子线圈_绝缘的压制。 A相间 B匝间 C对地 D高压14、成品试验即指电机装配完成，并经总装检查合格后进行的试验，包括检查试验和_试验。 A型式 B维修 C通电 D调试 15、电机三相电流平衡试验时，如果线圈局部过热，则可能是_。 A匝间短路 B极对数接错 C并联支路数接错 D极性接错 16、双层波绕组的优点是不论极数多少，只有（）个绕组圈，所以极相组间连线少。 A一个 B两个 C四个 17、职工企业诚

3、实守信应该做到的是_。 A忠诚所属的企业，无论何种情况都始终是把企业利益放在第一位 B维护企业信誉，树立质量意识和服务意识 C保守企业秘密，不对外谈论企业之事 D完成本职工作即可，谋划企业发展由有见识的人来做 18、直流电枢绕组的短路、断路及接法错误，一般可用毫伏表检查。在_上通入大小适当的直流电，用毫伏表测量相邻两换向片间的电压降。 A换向极 B电刷 C电刷装置 D换向器 19、The destruction of our natural resources and contamination of our food supply continue to occur, largely because of the extreme difficulty in affixing (把……固定) legal responsibility on those who continue to treat our environment with reckless abandon (放任). Attempts to prevent pollution by legisl

4、ation, economic incentives and friendly persuasion have been met by lawsuits, personal and industrial denial and long delays-not only in accepting responsibility, but more importantly, in doing something about it.It seems that only when government decides it can afford tax incentives or production sacrifices is there any initiative for change. Where is industry’ s and our recognition that protecting mankind’ s great treasure is the single most important responsibility If ever there w

5、ill be time for environmental health professionals to come to the frontlines and provide leadership to solve environmental problems, that time is now.We are being asked, and, in fact, the public is demanding that we take positive action. It is our responsibility as professionals in environmental health to make the difference. Yes, the ecologists, the environmental activists and the conservationists serve to communicate, stimulate thinking and promote behavioral change. However, it is those of us

6、 who are paid to make the decisions to develop, improve and enforce environmental standards, I submit, who must lead the charge.We must recognize that environmental health issues do not stop at city limits, county lines, state or even federal boundaries. We can no longer afford to be tunnel-visioned in our approach. We must visualize issues from every perspective to make the objective decisions. We must express our views clearly to prevent media distortion and public confusion.I believe we have

7、a three-part mission for the present. First, we must continue to press for improvements in the quality of life that people can make for themselves. Second, we must investigate and understand the link between environment and health. Third, we must be able to communicate technical information in a form that citizens can understand. If we can accomplish these three goals in this decade, maybe we can finally stop environmental degradation, and not merely hold it back. We will then be able to spend p

8、ollution dollars truly on prevention rather than on bandages. Which of the following, according to the author, should play the leading role in the solution of environmental problems () ALegislation and government intervention. BThe industry's understanding and support. CThe efforts of environmental health professionals. DThe cooperation of ecologists, environmental activists and conservationists. 20、一台36槽的4极电动机的槽距角为_。 A20 B30 C40 D60 21、对于转速在_r/min及以下的同步电机大多将转子磁极做成凸极式结构。 A1500 B3000 C2000 D2

9、500 22、电机行业职工道德的核心内容不包括_。 A职业精神 B职业风尚 C职业技能 D职业风采23、工步的切削用量包括背吃刀量、_、进给次数、切削速度。 A切削面积 B进给量 C切削长度 D切削宽度 24、下列选项不属于气压传动优点的是_。 A无介质费用的支出和供应上的困难 B反应快，运动迅速 C升降摆角靠模 D受外界影响小25、指导操作的基本要求不包括：_。 A要重视安全教育 B要认真进行总结 C要与生产实际相结合 D要及时发现问题，以后解决二、多项选择题（共 25 题，每题 2 分，每题的备选项中，有 2 个或 2 个以上符合题意，至少有1 个错项。错选，本题不得分；少选，所选的每个选项得 0.5 分） 1、相线与相线间的电压称为线电压。星形联结时其相位超前相电压_。 A30 B90 C120 D180 2、有效导体数Za与电枢槽效Qa及每槽有效导体数z的关系为（）。  AZa=QaZ BZa=z/Qa CZa=z+Qa DZa=z-Qa3、职业守则内容正确的是_。 A遵守操作规程，协助他人 B廉洁奉公，顺便方便自己 C努力学习，勤奋工作 D诚实守信，利益为重 4、指导操作的基本要求不包括：_。 A培训计划 B与生产实际相结合 C与理论教育结合 D理论指导5、无纬带绑扎工艺可分为_、预热、绑扎和固化等工序。 A变形 B整形 C增大 D缩小 6、观察一信号波形时，按输入信号频率为扫描频率的_倍的原则来选择扫描频率。 A0.10.5 B15 C1

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