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Search results: phase voltage

Number of results: 11


Improving the efficiency of the road transport power supply system
Annotation:

The article discusses a way to increase the efficiency of automobile operation by improving methods for ensuring the operability of electrical equipment based on the diagnosis of generators by output voltage. As a diagnosis, it is proposed to perform a spectral analysis of the generated voltage in idle mode and to determine the state of various generator elements from the results. The effectiveness of the proposed solutions is determined by the non-separable diagnostics of the generator, which, based on a thorough examination, can determine the state of various elements of the generator. This method does not require taking the generator out of operation, does not depend on its design and can be used in difficult operating conditions to obtain preliminary information about the state of the generator at the initial stage of maintenance.

Year of release: 2020
Number of the journal: 1(77)

Determining the percentage of metal in the catalyst
Annotation:

This article focuses on the adsorption properties of Ni-PEG / ZnO and Cu-PEG / ZnO catalysts. For modern technologies require more efficient and cheaper hydrogenation catalysts. Create them only through the development of new scientific approaches to the preparation of supported catalysts, and most recently modified polymer catalyst as supported on a carrier, and unsupported, involving the study of new physical and chemical methods. To determine the percentage of metal in the catalyst was prepared and investigated the mother solution.

Author: D.A. Ganikel
Year of release: 2015
Number of the journal: 3(59)

Differentiate test control at primary school
Annotation:

Education is one of the priority directions in the development of our state. It is impossible to talk about modernization of education without monitoring its quality. The article considers a differentiated approach to learning, the conditions under which this approach can be applied. Two main criteria of the differentiated approach are singled out: level of training and learning ability. The article gives recommendations on the phased implementation of differentiation. Positive and negative parties of different types of control of education quality are also presented. Most objective is the differentiated test control. The article reveals its characteristics, the possibilities of using it in lessons in primary school.

Year of release: 2016
Number of the journal: 3(63)

Review of methods of diagnosis of failures of electric motor
Annotation:

In the article different methods of diagnosis of failures of electric equipment which are most often found in the industry today. The classification of methods for diagnosing motor failures is presented, and the advantages and disadvantages of existing methods for diagnosing failures in electric equipment are revealed. Based on the description of the methods of diagnosing electric equipment failures, a comparative table was compiled. Analyzing the comparative table of methods for diagnosing failures of electric equipment, the most current method for diagnosing the technical condition of the electric motor was determined.

Year of release: 2016
Number of the journal: 4(64)

The effect of conductive electromagnetic interference on the phase-to-ground fault current in 6-35 kV networks
Annotation:

The article presents a study of the effect of a resistor in a network neutral point from 6 to 35 kV on the conductive electromagnetic interference with the ground-fault current. A mathematical model is proposed.

Year of release: 2016
Number of the journal: 4(64)

Controlled transformer-type shunt reactors
Annotation:

The possibilities of using controlled transformer-type shunt reactors at power grid substations to optimize the transmission mode are considered. The laws of voltage regulation, providing the mode of natural power and reduction of active power losses in the electrical system, are highlighted. Key words: energy complex, controlled transformer-type shunt reactor, voltage stabilization, thyristor voltage controller, control winding.

Year of release: 2018
Number of the journal: 3(71)
Keywords:

Optimization of the nutrient medium for cultivation of the lactic acid bacteria lactobacillus casei bm-4/17 b-rkm 0746 in a bioreactor
Annotation:

This article presents a comparative analysis of nutrient media for the cultivation of lactic acid bacteria Lactobacillus casei BM-4/17 B-RKM 0746 in a bioreactor. The main criteria for identifying the effectiveness of the nutrient medium were the accumulation of the highest biomass of lactic acid bacteria cells and the amount of nutrient medium components in relation to the biomass obtained.

Year of release: 2019
Number of the journal: 1(73)

Asynchronous electric drive with indirect control of output variables
Annotation:

The article provides a mathematical description of an induction motor with a device for indirect control of the electromagnetic moment and angular velocity of an induction motor in an electric drive, which allows substantiating on its basis a method for controlling the output variables of an asynchronous electric motor. A simulation model of an induction motor with an indirect control device for the output variables of an induction motor and the main results of the study are presented.

Year of release: 2019
Number of the journal: 4(76)

On the question of understanding the rule of law in a country with the rule of law
Annotation:

In the present article the understanding of the lawfulness in a legal state isconsidered . In particular, the author notes that legality is the main principle of the rule of law. In addition, it is noted that the precise implementation of democratic laws entails the implementation of other legally enshrined principles, such as: separation of powers, democracy, sovereignty of the people, recognition and guarantee of human rights, etc. The author concludes that at present, the idea of a legal state, as applied to the Republic of Kazakhstan, is in the phase of its implementation.

Author: B.M. Pakirdinov
Year of release:
Number of the journal:
Heading: Social sciences

Automation of determining the electrical safety level of electro technical complexes using fuzzy logic
Annotation:

The article is devoted to the task of automating the assessment of the electrical safety level of electrical installations based on the determination of the electrical resistivity of soil layers ρ in specific climatic conditions. The soil ρ value depends on many factors, which can vary significantly during the year. Therefore, the decision was made using modeling based on one of the areas of artificial intelligence: fuzzy logic.

Author: N.M. Zaytseva
Year of release: 2019
Number of the journal: 3(75)

Small business of the Republic of Kazakhstan: current development tendencies in the leading sectors of the economy
Annotation:

Market transformations in the Republic of Kazakhstan and in the regions have entered a phase of intensification: management systems and resource allocation have been fully improved, the institution of public-private property has been formed, the main market mechanisms of economic regulation have been put into effect. The mechanism of self-development of the market as a whole is gradually being launched, small business is becoming crucial. It is free entrepreneurship that is designed to intensify the further economic recovery in the regions of the Republic of Kazakhstan. Balanced and progressive development of small business involves the development of infrastructure that stimulates the activity of its development and requires the transformation of the mechanisms and format of integration of the sphere of small and large business, as one of the fundamental factors of balanced development of small business in the leading sectors of the economy. In the Republic of Kazakhstan, the support of the small business sector is one of the strategic priorities of its development. However, despite the measures taken by the state to provide support to small businesses, the dynamics of needs and industry-specific features of the development of the market of goods and services make their own adjustments to regional trends in the development of small business, forming an industry and structural imbalance in the development of small business, which requires consideration and clarification of their content. Purpose is to study the state and trends of small business development as a factor affecting the efficiency of the economy and social stability of the population. The analysis of small business development in the article is implemented on the basis of the information and statistical base of the Republic of Kazakhstan in the context of identifying trends and patterns of its development; identification, generalization and justification of the reasons for their formative and institutional approaches to their regulation. In particular, the analysis in the study is based on the materials of statistical reviews and their analysis using methods of grouping, generalization, logical analysis, system description and interpretation. The range of main directions and trends in the development of small entrepreneurship in the Republic of Kazakhstan has been studied and determined, their effectiveness has been assessed and tools to support the balanced development of small business have been proposed.

Year of release: 2023
Number of the journal: 3(91)