According to the Stressed Oil Volume theory, the breakdown strength is It is also applicable for clean liquids, gas/air and steam. Also learn about: 1. V 1 = V a + V v = 1 + e 1. The Newtonian oil film of thickness $$'h'$$ has dynamic viscosity $$'\mu '$$ and the flow condition is laminar. For this purpose, combined stress research is taken as an example. Transformer oil is used in oil-filled electrical power transformers to insulate , stop arcing and corona discharge , and to dissipate the heat of the transformer (i.e. 20 kV/in Za ispravke kontaktirajte CROSBI podršku putem web obrasca, Naslov 9. SME 1313 Fluid Mechanics I Introduction Property – any characteristic of a system E.g pressure P, temperature T, volume V, and mass m Intensive properties Properties that are independent of the mass of a system e.g temperature, pressure, density Extensive properties Properties whose values depend on size-or-extent-of the system e.g mass, total volume, total momentum justable parameters. CLT can be extended to viscoelastic response by use of … In terms of movable oil volume by dividing this equation by 1 S wc s or W f 1 b from ENPE 525 at University of Calgary If the atmospheric pressure on the surface of an oil tank (sp. Ustanove: The dielectric strength of air is approx: 10 kV/in 20 kV/in 200 kV/in 5000 kV/in Correct answer: b. Networks Analysis and Synthesis MCQ Questions & Answers VIVA Questions, Electrical Engineering 1. }, Za ispravke kontaktirajte CROSBI podršku putem. act as a coolant). Ans: d. 2. FLUID MECHANICS Multiple Choice Questions :-1. ADVERTISEMENTS: Compilation of answers we got on the classical theory of management. Volume of water leaving the soil element per unit time is – Volume of pore water squeezed (expelled) out of the element per unit time is – where V 1 is the initial volume that is equal to dx × dy × dz. 31. KONČAR - Institut za elektrotehniku d.d. Sažetak Međunarodna recenzija, Ključne riječi Practice and Learn General Knowledge MCQ Questions and Answers for Government exams, Bank exams and other various exams Maximum Principal Stress theory also known as RANKINE’S THEORY 2. Classical Management Theory Advantages And Disadvantages 2. Combining the above two equations, we have – 1. The aim of this paper is to demonstrate how stressed oil volume (SOV) theory can be used in experimental research to obtain better reliability of transformer insulation design criteria. Maximum Shear Stress theory or GUEST AND TRESCA’S THEORY 3. Znanstvena područja Classical Theory Of Management By Taylor Answer 1. Elektrotehnika. Due to internal fluid pressure these are tensile in nature. Fluid Mechanics MCQ Objective Question and Answers Part 1 Fluid Mechanics Multiple choice Objective Question useful for technical Aptitude test. In combined stress research winding edge geometry is investigated, where at the same time winding edge is exposed to axial lightning impulse … It does not mean that classical views are static and Combining the radial and axial stress into a single design criterion should lead to a more reliable insulation design. b. In a soil if the existing effective stress is the maximum that it has ever experienced in its history, then the soil will be called (a) normally consolidated (b) pre-consolidated (c) under-consolidated (d) none of these 6. The theory is applicable to mix- tures of molecules of different sizes and lays particular stress on equation of state contributions to the thermo- dynamic excess functions, which are of central impor- tance in determining the free volume of the … The particles form conducting chain which leads to breakdown Cavity and bubble breakdown theory Stressed oil volume theory is applicable when (a) small volume of liquid is involved (b) large volume of liquid is involved (c) large gap distance is involved (d) pure liquids are involved 10. NETWORK ANALYSIS 23. pages = {1-8}, Assuming constant loaded area, A, we have – ΔV/V 1 = (V 1 /V 2)/V 1. where V f is the final volume of the soil after a given stress increment Δσ’: . Thermodynamics Multiple choice Questions :-1. Electrical Engineering (MCQ) questions and answers, Electrical and Electronic Measurements & Instrumentation, Maintenance & Testing of Electrical Equipments, Electrical Installation, Estimation and Costing, Power System - Analysis, Stability & Computer Techniques, Power System - Transmission and Distribution. A hydrostatic test is a way in which pressure vessels such as pipelines, plumbing, gas cylinders, boilers and fuel tanks can be tested for strength and leaks. For stress–strain analysis of continuous fiber reinforced composite materials, an extremely powerful tool is the classical lamination theory (CLT), developed originally for elastic materials and also described in Volume 1 of this series. 5th International Colloquium Transformer Research and Asset Management, Mjesto i datum What is the principle of stressed oil volume Theory in Breakdown liquids. Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja, CROSBI ID: 1027541 Classical Theory of Management by Taylor: The term ‘classical’ means something traditionally accepted or long-established. Maximum Distortion Energy theory or VONMISES AND HENCKY’S THEORY 1. Home >> Category >> Electrical Engineering (MCQ) questions and answers >> High Voltage Engineering; Q. CROSBI koristi kolačiće (cookies) kako bi poboljšao funkcionalnost stranice. gr. Substituting the value of (∂v z /∂z) from Eq. volume element subjected to three equal normal stresses) can withstand very large stresses. (11.23), we have – 3. field on axial oil gap LI withstand stress, which is an essential step in combined stress design criteria development. NETWORK ANALYSIS MCQ PART (II) JE/SSC/RRB/PSCProf.Prasant Tiwari 2. The test involves filling the vessel or pipe system with a liquid, usually water, which may be dyed to aid in visual leak detection, and pressurization of the vessel to the specified test pressure. What are the characteristics of a good solid dielectric? Institut Ruđer Bošković | Stressed Oil Volume Theory in Transformer Winding Corner Stress Analysis, Autori A specimen of oil having an initial volume of 580 cm^3 is subjected to a pressure increase of 4.0 MPa, and the volume is found to decrease by 0.40 cm^3. c. Statistical or stressed oil volume theory Suspended particle theory Impurities or particles floating in the liquid align The force that drags them into the Electric Field is given by 1 3 e s el 2 F r E 2 e s 2e l If er is large, 1 3 F r E 2 2. The higher the API gravity, the higher the crude. Geertsma discussed stress and strain solutions and stated that elastic theory is applicable to borehole fracturing, but that sand influx requires accounting for plasticity effects. MCQ Type Questions: - 25194362 MCQ Type Questions: 1. Directly proportional to the stressed oil volume. Total Strain Energy theory or HAIGH’S THEORY 5. This study was basically two-dimensional, not taking into consideration the vertical stress. title = {Stressed Oil Volume Theory in Transformer Winding Corner Stress Analysis}, a. The safety factor for the maximum shear-stress theory is given by max S sy N Theories of Failure Distortion-Energy Theory OR The von Mises - Hencky Theory It has been observed that a solid under hydro-static, external pressure (e.g. Stressed oil volume theory . 32. In non-uniform fields, the stressed oil volume is taken as the volume which is contained between the maximum stress contour (Emax) and (0.9 Emax) contour. Gabrić, P., Orešković, A., Kuprešanin, V., Mikulecky, A. Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni, Izvornik High gravity crudes are generally considered more valuable. transformer winding, corner stress, stressed oil volume, insulation design. Pravila privatnosti | Biaxial state of stress is assumed to be applicable (a) Circumferential stress or Hoop stress, σ H There are normal stresses which act in the direction of circumference. According to this theory the breakdown strength is inversely proportional to the stressed oil volume. Conduction and breakdown in liquid dielectrics - Electrical Engineering (MCQ) questions and answers. Proceedings of the 5th International Colloquium Transformer Research and Asset Management API Gravity: The gravity (weight per unit of volume) of crude oil expressed in degrees according to an American Petroleum Institute recommended system. The aim of this paper is to demonstrate how stressed oil volume (SOV) theory can be used in experimental research to obtain better reliability of transformer insulation design criteria. The torque required to overcome viscous resistance of a footstep bearing is (where μ = Viscosity of the oil, N = Speed of the shaft, R = Radius of the shaft, and t = Thickness of the oil film) (A) μπ²NR/60t (B) μπ²NR²/60t (C) μπ²NR³/60t (D) μπ²NR⁴/60t Ans: d. 2. Now – ΔV/V 1 = Δe/(1 + e 1). Predavanje, Vrsta recenzije & Podobnik, V. (2019) Stressed Oil Volume Theory in Transformer Winding Corner Stress Analysis. Fluid is a substance that (a) cannot be subjected to shear forces (b) always expands until it fills any container (c) has the same shear stress.at a point regardless of its motion (d) cannot remain at rest under action of any shear force (e) flows. Sažetak. The stress at this point is called (a) effective stress (b) consolidation stress (c) under-consolidation stress (d) pre-consolidation stress 5. © Copyright 2016. keyword = {transformer winding, corner stress, stressed oil volume, insulation design}, In combined stress research winding edge geometry is investigated, where at the same time winding edge is exposed to axial lightning impulse stress due to potential difference between discs/coils and radial LI stress due to potential difference between windings. publisher = {HRO CIGR\'{E}}, Change in the Volume … According to the Stressed Oil Volume theory, the breakdown strength is. All Rights Reserved. © 2021. @article{article, Transformer oil (also known as insulating oil) is a special type of oil which has excellent electrical insulating properties and is stable at high temperatures. keywords = {transformer winding, corner stress, stressed oil volume, insulation design}, U: Proceedings of the 5th International Colloquium Transformer Research and Asset Management. MCQ (Single Correct Answer) GATE ME 2008. Gabrić, Petar ; Orešković, Ana ; Kuprešanin, Vjenceslav ; Mikulecky, Antun ; Podobnik, Vladimir, Vrsta, podvrsta i kategorija rada General Knowledge MCQ questions and answers with solution for competitive exam, interview and entrance test. publisherplace = {Opatija, Hrvatska} This paper shows how SOV theory can be used to analyse the influence of radial el. According to the Stressed Oil Volume theory, the breakdown strength is - Published on 21 Dec 15. a. Opatija, Hrvatska, 9.-12.10.2019, Vrsta sudjelovanja / - Opatija : HRO CIGRÉ, 2019, 1-8, Skup Directly proportional to the stressed oil volume b. Maximum Principal Strain theory also known as St. VENANT’S THEORY 4. Multiple Choice Questions and Answers By Jhasketan Garud January 9, 2020 Multiple Choice Questions and Answers on Stress Management The questions and answers on stress management have been designed in such a way that you will learn the subject in the process of answering the questions. The BDV of liquid dielectric depends on the region which is subjected to the highest stress and the volume of liquid contained in the region. In thin pressure vessels, hoop stresses are assumed to be uniform across thickness. year = {2019}, (11.22) in Eq. Which of the following laws is applicable for the behavior of a perfect gas (a) Boyle’s law (b) Charles’law (c) Gay-Lussac law ANSWER: Inversely proportional to the stressed oil volume, ANSWER: Areas of maximum stress, areas of minimum stress, ANSWER: Higher boiling point and high viscosity. A Wedge Flow Meter is preferably applied in difficult-to-meter line fluids, like air entrained liquids, particular entrained liquids, high viscous liquids or slurry liquids, which are abrasive or fibrous.. For this purpose, combined stress research is taken as an example. e = V v /V s. Considering unit volume of the soil solids, that is, V s = 1, void ratio e = V v, initial volume of the soil is –. According to stressed oil volume theory, the breakdown strength _____ the stressed oil volume: Is inversely proportional to; Is directly proportional to; Is independent of; None of these Correct answer: 1. Explanation: No explanation is available for this question! Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - … Statistika, Gabrić, Petar; Orešković, Ana; Kuprešanin, Vjenceslav; Mikulecky, Antun; Podobnik, Vladimir. Which of the following variables controls the physical properties of a perfect gas (a) pressure (b) temperature (c) volume (d) all of the above (e) atomic mass. Transformer designers usually consider this axial and radial stress as two independent manifestations, evaluating each with its own design criteria. Network Theory Part 2 questions and answers for interviews, campus placements, online tests, aptitude tests, quizzes and competitive exams. Free PDF Books - Engineering eBooks Free Download online Pdf Study Material for All MECHANICAL, ELECTRONICS, ELECTRICAL, CIVIL, AUTOMOBILE, CHEMICAL, COMPUTERS, MECHATRONIC, TELECOMMUNICATION with Most Polular Books Free. 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