نتایج جستجو برای: self and mutual inductances

تعداد نتایج: 16913933  

2006
J P Silva A J Silvestre

We compare the magnetic field at the center of and the self-magnetic flux through a current-carrying circular loop, with those obtained for current-carrying polygons with the same perimeter. As the magnetic field diverges at the position of the wires, we compare the self-fluxes utilizing several regularization procedures. The calculation is best performed utilizing the vector potential, thus hi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده ادبیات و زبانهای خارجی 1393

the purpose of this study was to find the relationship between critical thinking and self-regulation with reading comprehension of iranian female elementary language learners. the present study is a correlational one having a descriptive design. two questionnaires, critical thinking questionnaire and self-regulation questionnaire which were valid and reliable questionnaires and four reading com...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - پژوهشکده ادبیات 1392

abstract the aim of the present study is to explore the impact of the cognitive reading strategy instruction on learners reading self-efficacy and their reading achievement. in order to fulfill this purpose, from 120 participants, 90 intermediate efl learners as an experimental group were chosen from three different educational settings namely, yazd university, yazd science and art un...

High-frequency coils are widely used in medical applications, such as Magnetic Resonance Imaging (MRI) systems. A typical medical MRI includes a local radio frequency transmit/receive coil. This coil is designed for maximum energy transfer or wave transfer through magnetic resonance. Mutual inductance is a dynamic parameter that determines the energy quantity to be transferred wirelessly by ele...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1392

the main purpose of the present study was to investigate the relationship between listening proficiency and metacognitive listening strategies awareness among low, mid, and highly self-regulated students. three hundred and seventy one efl students participated in this study (all grade 3 and 4 high-school students who were studying in khansar in academic year 1391-92). to gather the data, three ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان همدان - دانشکده ادبیات و علوم انسانی 1390

the present research has been deducted from a provincial research project which aims at determining the relationship of variables of variables of occupational self-concept, intelligence beliefs and metacognitive with entrepreneurship among the students of payame noor university of kurdistan. the volume of the samples was 1080 students (576 female and 504 male students). the research methodology...

1986
P. J. COSTA BRANCO

This paper studies two important questions related with switched reluctance machines: 1. In what conditions we can consider to use the SRM linear model but with sufficient accuracy to predict its steady-state characteristics? 2. To take or not to take into account the mutual inductances in the 6/4 SR non-linear model? Are there any significant errors when we neglect the phase mutual inductances...

Journal: :AIP Advances 2023

We developed a resonance control method to generate high-speed rotating magnetic field in three-phase navigation system composed of three electromagnets. The proposed calculates the amplitudes and phases voltages, while capacitances suppressing self mutual inductances electromagnets keep currents magnitude constant, even if frequency increases. Finally, we prototyped variable capacitor module v...

Journal: :The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science 1908

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