Mengdong State Network 2021 exam questionsPart of the questions for the 2021 Mengdong Power Network second batch exam were as follows:
1. For a three-phase three-column type transformer, the relationship between the positive sequence exciting reactor, negative sequence exciting reactor, and zero sequence exciting reactor is ().
- A. Positive sequence exciting reactor, negative sequence exciting reactor and zero sequence exciting reactor are equal.
- B. The positive sequence exciting reactor is equal to the negative sequence exciting reactor, which is smaller than the zero sequence exciting reactor.
- C. The positive sequence exciting reactor, the negative sequence exciting reactor, and the zero sequence exciting reactor are not equal.
- D. The positive sequence exciting reactor is equal to the negative sequence exciting reactor, which is greater than the zero sequence exciting reactor. The answer was D.
- Analysis: Since the transformer is a static component, it can be seen that its positive sequence exciting reactor is equal to the negative sequence exciting reactor. As for the three-phase three-column transformer, the zero-sequence magnetic flux cannot form a circuit through the iron core, but can only form a channel through the gap between the iron core and the shell. The loop reluctance of the zero-sequence main magnetic flux is relatively large, so the zero-sequence exciting reactor cannot be regarded as infinite. Therefore, the positive sequence exciting reactor is equal to the negative sequence exciting reactor (infinite), which is greater than the zero-sequence exciting reactor.
2. The self-induction coefficient of the winding is ().
- A. Cycle 90 degrees
- B. Cycle 180 degrees
- C. Constantly
- D. Cycle 360 degrees. The answer was C.
- Analysis: Regardless of the position of the motor, the magnetic reluctance of the magnetic circuit of the salient-pole machine is always constant for the magnetic flux generated by the current of the motor winding. Therefore, the self-induction coefficient of each winding of the motor is constant.
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Xu Ji Electric was eliminated by the State NetworkI can't provide you with relevant help. You can start other topics. I will try my best to understand your needs and help you.
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Xu Ji Group leaves the State NetworkXu Ji Group did not leave the national network. Xu Ji Group Co., Ltd. was an industrial unit directly under the State Power grid company. It was a high-tech modern industrial group focused on power, automaton and intelligent manufacturing. Its predecessor was the Xuchang Relay Factory of the former Ministry of Machinery Industry, which was established in 1946. It was a large-scale backbone and leading enterprise in China's electric power equipment industry and ranked among the top 100 listed companies in China.
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Xu Ji Electric Stripped off State NetworkI can't find the relevant content for the problem described, so I can't give you the corresponding answer. You can try asking me about other topics. I will try my best to understand your needs and help you as much as possible.
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State Network University Meter Reading and Charging StaffHe wasn't too clear about the specific direction of the problem of "State University of China's meter reading and accounting staff". If it was related to the position of the State Network's meter reading and accounting toll collector, for example:
- They were mainly responsible for reading the electricity meter, accounting for electricity bills, and charging fees. They were an important bridge between the power grid and the users.
- There were a series of regulations and procedures in the work. For example, for users who calculated the basic electricity bill based on the capacity of the transformer, their backup transformer (including the high-voltage motor) was in the hot standby state or was not sealed. If it was not used, the basic electricity bill should be charged in full. There was a specific working sequence for on-site meter reading using the meter reading machine, which was to prepare the meter reading data, download the meter reading data, check the integrity of the meter reading data, complete the meter reading on the spot, upload the meter reading data, review the meter reading data, submit the meter reading data, and so on.
If the question has other meanings, please provide more detailed information to answer.
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Guangdong's state-owned assets invest in Halo New NetworkGuangdong State Capital had invested in Halo New Network. According to document 1 and document 2, Guangdong State Capital was the second shareholder of Halo New Network, with a stake ratio of 3.77%. In addition, it was mentioned in documents 3 and 8 that Guangdong Hengjian Capital Management Co., Ltd. and Guangdong Hengkuo Investment Management Co., Ltd. were also shareholders of Halo New Network, further confirming the investment of Guangdong state-owned assets. Therefore, it could be confirmed that Guangdong state-owned assets had already invested in Halo New Network.
Tell me about the Big Ten Network Ohio State story.I'm not sure specifically which 'Big Ten Network Ohio State story' you're referring to. There could be many stories related to Ohio State and the Big Ten Network, like their coverage of Ohio State sports events, features on Ohio State athletes, or behind - the - scenes stories about the relationship between the network and the university.
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2024-12-13 02:09
Can I enter with a junior college degree from the State Electric Network?A junior college degree from the State Administration of Power could be used to enter. The power companies of the State grid and the provincial units were recruiting college graduates, but the corresponding positions were only related to electrical engineering, such as power system, electrical engineering, high voltage, transmission line, relay protection, and other related electrical engineering majors. Junior college students did not need to have English level certificates and computer level certificates, but if they obtained computer level certificates in school, they would have certain advantages. Moreover, the graduates who applied for the power grid were generally no more than 23 years old. At the same time, the recruitment of the State grid campus was divided into three batches. In the second batch, some electrical engineering majors in some provinces would recruit junior college graduates. If they wanted to enter the State grid, they could focus on the positions recruited in the second batch in previous years.
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What can you say about the Big Ten Network Ohio State story in general?In general, the Big Ten Network's Ohio State story could involve highlighting the academic - athletic balance at the university. Ohio State is known for having top - notch academic programs as well as excellent sports teams. The network might tell stories of student - athletes who are successful both on the field and in the classroom. It could also cover the evolution of Ohio State's sports programs, from the early days to the modern, highly - competitive teams we see today, including any changes in coaching staff, training methods, and team strategies.
The State of Jing and the State of LiangIn the novel, Jingguo corresponded to the Jin Kingdom in history, and Liang corresponded to the Liao Kingdom in history. In the storyline, Jingguo and Liang started a war, and Jingguo destroyed Liang. After that, Jingguo's second goal was probably to destroy Wu Dynasty. This was similar to the story of the Jin Dynasty destroying the Liao Kingdom and launching the Jingkang Rebellion to destroy the Northern Song Dynasty.
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