2013质检员机械电气专业考试试卷

2013质检员机械电气专业考试试卷 机械电气专业考试试卷 单项选择题(每题1分，共40分) (1)获得相同的机组出力和发电量，水头升高其发电耗水率( 2) 增大 减小 不变 (2)混流式水轮机和轴流转桨式水轮机比较，当工作水头和出力变化时，其效率变化不大的是( 2)。 混流式水轮机 轴流转桨式水轮机 轴流定桨式水轮机 A和B (3)电涡流传感器是( 1)。 涡流效应的非接触式位移传感器 涡流效应的接触式位移传感器 互感效应的非接触式速度传感器 互感效应的接触式速度传感器 (4)高水头、低比速的水轮机，其能量损失为(3 )。 转轮损失大，尾水管损失大 转轮损失小，尾水管损失大 转轮损失大，尾水管损失小 转轮损失小，尾水管损失小 (5)发电机正常运行时，气隙磁场是(3 )。 转子电源产生 定子电流产生的 转子电流与定子电流共同产生 励磁电流产生 (6)水电站水力机组运行状态在线监测的信号采集和预处理单元的结构包括( 4)。 信号采集模块、隔离放大板 滤波、AD板、风扇模块 共用电源模块、预处理模块 以上都有 (7)测振仪器中的( 3)放大器的放大倍数K，随频率增加而呈下降趋势。3 线性 微分 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you 积分 重积分 (8)一般情况下，电站机组在线监测系统测机组大轴摆度的电涡流传感器通道的输入信号是(1 )。 -2,-18V -10,10V 20mA 4, 0,10mA (9)水轮机中的水流运动是十分复杂的，水流质点沿转轮叶片的运动称为( 4 )。 相对运动 牵连运动的圆周运动 绝对运动 水轮机流速三角形 )测量导叶漏水量通常采用(1 )。 (10 容积法 流速仪法 容量法 超声波法 (11)水力机组摆度测量传感器一般选择(3 )( 电涡流位移传感器 速度型振劝传感器 电磁传感器 光电耦合器 (12)机组转速在600r/min 以上时，水轮机导轴承处的绝对摆度不得超过( 1)。 0.20mm 0.25mm 0.30mm 0.35mm (13)电度 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 的检验周期是(1 )。 1 年 3 年 5 年 10 年 (14)在下列机组效率试验 方法 快递客服问题件处理详细方法山木方法pdf计算方法pdf华与华方法下载八字理论方法下载 中，测量精度最低的是(4 )。 流速仪法 水锤法 超声波法 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you 蜗壳差压法 (15)导水机构调节流量的实质是( 2)。 改变导叶进口面积 改变导叶进口水流角度 改变导叶出口面积 改变导叶出口水流角度 (16)水轮机导叶开度越大( 1)， 效率越高 出力越大 流量越大 效率越低 (17)水轮机运转综合特性曲线以(4 )作为坐标参数。 n11和Q11 N和Q H和N H和P (18)同步发电机转子绕组的绝缘电阻值不宜低于(1 )。 0.5MΩ 1MΩ 5MΩ 10MΩ (19)表面粗糙度是表面质量表征，其单位为( 3)。 厘米 毫米 微米 纳米 (20)测量定子绕组的绝缘电阻和吸收比时，各相绝缘电阻的不平衡系数不应大于( 2)。 1 2 5 10 (21)并联电容器主要用于补偿电力系统(4)功率。 同时补偿有功和感性无功 有功 容性无功 感性无功 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you (22)电抗器及消弧线圈的下列试验项目，强制性项目必须严格执行的为:( 2)。 测量绕组连同套管的直流电阻 测量绕组连同套管的绝缘电阻、吸收比或极化指数 测量绕组连同套管的介质损耗角正切值 tanδ 绕组连同套管的交流耐压试验 (23)异步电动机转子转速(2 )旋转磁场的转速。 小于 大于 等于 以上均可以 (24)转桨式水轮机协联保持时的飞逸转速比协联破坏时( 2)。 高 低 相等 不一定 (25)混流式水轮机的标称直径是(4 ) 导叶轴线直径 转轮室直径 进几边最小直径 进口边最大直径 (26)千分表的作用为( 1)测量。 长度 转速 振动 噪声 (27)采朋包角1800的混凝土蜗壳的水轮机的导叶应是(3 )。 正曲率导叶 负曲率导叶 对称型导叶 以上均可 (28)能比较准确和直观地观察和统计出空蚀破坏的部位和强度的 检测 工程第三方检测合同工程防雷检测合同植筋拉拔检测方案传感器技术课后答案检测机构通用要求培训 方法是(4 )。 噪声法 电阻法 加速度法 易损镀层法 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you (29)可用于水轮机主轴内部缺陷的无损检测方法是( 4)探伤。 X射线 渗透 磁粉 超声波 (30)一般情况下轴流式水轮机的叶片数比混流式(2 )。 多 少 相同 不一定 (31)尾水管补气的主要目的是(1 )。 消除和减轻尾水管的空腔空化 消除和减轻转轮叶片的空化 消除和减轻导叶的空化 消除和减轻蜗壳的空化 (32)水轮机泥沙磨损强烈发展时的特征是(4 )。 出水边呈锯齿形沟槽 表面呈波纹状 表面呈沟槽状 连片的鱼鳞状凹坑 (33)测量电压时，应将电压表与被测的负载(2)。 串联 并联 混联 以上均可 (34)电度表的检验周期是(1 )。 1 年 3 年 5 年 8 年 (35)在对转轮叶片进行出口开度检测的试验中，选择检测断面的数量为(4 )个。 2 3 4 5 (36)同步发电机定子绕组直流耐压试验和泄漏电流测量:试验电压为电机额定电压的(3 )倍。 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you 1 1.5 2 3 (37)同步发电机定子绕组直流耐压试验和泄漏电流测量:试验电压为电机额定电压的(3 )倍。 1 2 3 5 (38)水轮发电机在甩负荷时，机组运行状态和引水系统均处于(2 )的运行状态。 最安全 最恶劣 最佳 正常 (39)发电机定子铁心圆度测量分多个断面，每断面测点应不少于(4 )个。 4 8 12 16 (40)电气设备交接试验中所列的绝缘电阻测量，应使用(3 ) 的绝缘电阻值. 15s 30s 60s 100s , 多项选择题(每题1分，共20分) (1)水轮机叶片的型线直接影响到水轮机的( 13)指标 气蚀 磨损 能量 (2)下列属于电能质量指标的是:( 124) 频率 电压 电流 波形 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you (3)电压互感器二次短路会使一次侧(13 4)。 电压升高 电压降低 熔断器熔断 电流增大 不变 (4)母线的作用是( 123)。 汇集电能 分配电能 传输电能 连接各电气设备 (5)电力系统中性点的接地方式有( 123)。 直接接地方式 不接地方式 经消弧线圈接地方式 经大电容接地 (6)模数转换器的主要技术指标:( 234)。 体积 分辨率 精度 转换时间 重量 (7)机组现场检测试验中温度测量的主要部件是(14 )。 发电机的定子 发电机的转子 连接法兰 各部轴承 主轴 (8)互感器的下列试验项目中，强制性项目必须严格执行的为:( 12)。 测量绕组的绝缘电阻 局部放电试验 交流耐压试验 检查接线组别和极性 误差测量 (9)对金属材料内部的裂纹或缺陷的无损检测方法有(14 )。 超声波探伤 磁粉探伤 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you 渗透探伤 X射线探伤 断面观测 (10)关于同步发电机，下列表述正确的有:(13 )。 把机械能转变成电能 转子绕组中通入交流电 定子绕组产生交流电压 转速与频率成严格的比例关系 不但能发出有功，也能发出感性无功 (11)电力系统内部过电压一般有(1 )和(4 )_。 谐振过电压 串联过电压 并联过电压 操作过电压 高温过电压 (12)水轮机噪声按声源的不同，可分为( 123)噪声。 机械 电磁性 空气动力性 环境 本底 (13)六氟化硫封闭式组合电器的下列试验项目中，强制性项目必须严格执行的为:(134 )。 测量主回路的导电电阻 主回路的交流耐压试验 密封性试验 测量六氟化硫气体含水量 组合电器的操动试验 (14)互感器的下列试验项目中，强制性项目必须严格执行的为:( 12) 测量绕组的绝缘电阻 局部放电试验 交流耐压试验 检查接线组别和极性 误差测量 (15)水轮机噪声按声源的不同，可分为( 123)噪声。 机械 电磁性 空气动力性 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you 环境 本底 (16)衡量电能质量的指标主要有( 123)。 电压 频率 波形 相位 (17)水电站油系统中，透平油在设备中的作刷是( 234)。 绝缘 散热 润滑 液压操作 )机组试试运行试验包括(14 )试验。 (18 变转速 变流量 变励磁 变负荷 变水头 (19)下列表述正确的有:(1 4)。 在直流电路中电容相当于开路 在直流电路中电容相当于短路 在直流电路中纯电感相当于开路 在直流电路中纯电感相当于短路 在直流电流通过已知电阻时，电压与电流成正比 (20)并网运行的同步发电机下列量中基本保持不变的有:( 12)。 电压 频率 转速 有功功率 无功功率 , 判断题(每题1分，共40分) (1)发电机励磁系统为发电机转子提供励磁电流以形成旋转磁场( 2) 正确 错误 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you (2)水轮机绝对速度的轴面分量Vm与相对速度的轴面分量Wm相等( 1) 正确 错误 (3)压力脉动会引起水力机械过流部件产生振动。1 正确 错误 (4)差动变压式传感器输出的电压是直流量。1 正确 错误 (5)压电式传感器既可以将机械能转换为电能，又能将电能转换为机械能。1 正确 错误 (6)隐极式转子绕组可以不进行交流耐压试验，可采用 2500V 兆欧表测量绝缘电阻来代替。1 正确 错误 (7)低压自动开关能也只能在短路时自动切断线路电源。2 正确 错误 (8)磁粉探伤可以检出铜构件表面开口的缺陷。2 正确 错误 (9)相似水轮机尺寸越大效率越高。(2 ) 正确 错误 (10)继电保护的可靠性是指保护在应动作时不拒动,不应动作时不误动。2 正确 错误 (11)利用单位机械能和水力比能来确定效率就无需测量流量。1 正确 错误 (12)有功功率和无功功率之和称为视在功率。2 正确 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you 错误 (13)同一水头下的相似水轮机，尺寸越大转速越高。(2 ) 正确 错误 (14)48V 及以下电压等级回路可不作交流耐压试验;1 正确 错误 (15)容积式水力机械工作腔的容积是一定的。1 正确 错误 (16)水轮机的n11和Q11分别相等时，其比转速一定相等。(2 ) 正确 错误 (17)冲击式水轮机流道中的压力等于大气压力。( 1) 正确 错误 (18)测量同步发电机转子绕组的直流电阻应在冷状态下进行。1 正确 错误 (19)有功功率和无功功率之和称为视在功率。2 正确 错误 (20)油浸式变压器是指铁心和绕组都浸入油中的变压器。1 正确 错误 (21)利用单位机械能和水力比能来确定效率就无需测量流量。1 正确 错误 (22)选型设计中，应把最优工况作为设计工况。(2 ) 正确 错误 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you (23)电流互感器及电压互感器的二次回路必须有且只能有一点接地。2 正确 错误 (24)绝缘油在电气设备中的作用是绝缘、散热和消弧。1 正确 错误 (25)传感器的灵敏度是有方向性的。2 正确 错误 (26)当发电机有匝间绝缘时，应进行匝间耐压试验，在定子额定电压值的 130%(不超过定子最高电 压)下持续 10min2 正确 错误 (27)磁电式传感器只适用于静态测量。2 正确 错误 (28)渗透探伤只能检出表面开口的缺陷。1 正确 错误 (29)发电机正常运行时，每小时所消耗的实际流量称为机组的耗水率。2 正确 错误 (30)转速测量必须在相对于水力机械主轴转差等于0的情况下进行。1 正确 错误 (31)隐极式转子绕组可以不进行交流耐压试验，可采用 2500V 兆欧表测量绝缘电阻来代替。1 正确 错误 (32)测量同步发电机转子绕组的直流电阻应在冷状态下进行。1 正确 错误 (33)绝缘油在电气设备中的作用是绝缘、散热和消弧。1 quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you 正确 错误 (34)回跳硬度试验只适合对弹性模量相同的材料进行测定比较。1 正确 错误 (35)压力传感器系统必须在现场进行多次率定，所以传感器的精度由率定大的精度确定。1 正确 错误 (36)同步发电机正常运行时，定子绕组中电流为交流电，转子绕组中电流为直流电。1 正确 错误 (37)声学法测流量的原理是将声波的传播速度与水流速度叠加为基础。2 正确 错误 (38)为了减少水位波动，水电厂水位测量的低压侧测量断面应尽可能布置在远离尾水管出口处。2 正确 错误 (39)同步发电机的短路特性是指:转速等同步转速，电枢电压为零时，发电要的励磁电流与电枢电流之间的关系。2 正确 错误 (40)(电测仪表误差分可分为:绝对误差、相对误差及引用误差。2 正确 错误 , quality egg, chicken, ... Development of poultry industry will occupy a certain area of land, there is a modern product with comprehensive rollup of 50,000 chickens laying hens, covers an area of 14.87 hectares (233 acres) more (including Office of hatching, brood rearing, and laying House, eggs, feed processing workshop, Office, etc). The poultry industry should work in land conservation, not accounted for or less cultivated land, wasteland, the principle of slope land. When the chicken farm should generally not available to local arable land area to determine an appropriate level of breeding size and not, as in the past, first determine the size, then go to the expropriation. 3. energy-saving, water-saving awareness in the 1970 of the 20th century, the pig and chicken farm mechanization in our country forward under the slogan, the country started building a modern large chicken farms in the climax. Was built as the fully enclosed intensive chicken farms, using artificial light, mechanical feeding and mandatory ventilation, a small number of chicken farms also use mechanical sets eggs and manure. According to statistics, fully enclosed chicken coop per chicken when the annual electricity consumption of 10-kilowatt •, half opened the henhouse when • 2~5 kW (open), when the entire opening is 0.5 kW •, rolling open sheds at 0.45 kW •. Hen house types, power consumption difference is very big, a difference of 10~20. China's energy supply is in short supply. Therefore, in determining the breeding, poultry equipment selection should take full consideration of energy saving issues. Lack of fresh water resources in China, the average annual precipitation is 600 mm. 1988 2474 cubic meters of water per capita in China, only 1/4 of the population all over the world, now reduced to 2300 cubic meters. Hen daily water intake to about 1.5~2 times, so when you