Engineering thermodynamics questions and answers pdf
Engineering thermodynamics questions and answers pdf. 1,2 & 3 are correct. The Carnot cycle is named after Nicolas Carnot, who first described it in 1824. For an ideal gas the slope of the pressure volume curve, at a given point will be. What is fluid? It is a substance that deforms continuously for a small amount of shear force also, whereas solids cannot deform with a small amount of shear force, and thereby they can't come under fluids. 1. What is the importance of the Thermodynamics in the field of Mechanical Engineering? All the mechanical engineering systems are studied with the help of thermodynamics. Entropy is different: No conservation law – the entropy change ΔS associated with an Mechanical Engineering Applied, Physics, Chemistry, AP Thermodynamics Interview Questions and Answers Pdf Free Download for various Interviews, Competitive Exams and Entrance Test like CAT, MAT, XAT, SAT, GATE, NEET Exams. 27. Engineering Thermodynamics – Jones & Dugan 2. MCQ: In an isothermal process, internal energy. Feb 18, 2024 · engineering-thermodynamics-question-bank-with-answers 2 Downloaded from resources. b. Zeroth law: If any two systems are in thermal equilibrium with the third system, then they are also in thermal equilibrium with each other. Chapter 17. The Conservation of Energy law allows energy to flow bi-directionally between its various forms. This file contains exam questions for practice. 0MB ) This section provides a complete set of problem sets with solutions and weekly example problems with solutions. A container has two compartments separated by a membrane as shown in Figure P1. Two series of books that I recommend to undergraduates (and use myself) for worked examples: Shaum's Outline Series summarise the theory but focus on worked examples, with additional non-worked examples for extra practice. 11. using Steam Table and Mollier Chart. Exercise 51. Compartment A has THERMODYNAMICS PROBLEMS. The price per pill was also very low: the generic cost for the brand-name viagra https Jan 10, 2021 · 6. Atomic structure interview questions and answers Chemical kinetics interview questions and answers. EasyEngineering. MCQ: The mass of any substance per amount of substance is called. THERMODYNAMICS Interview Questions :-. An isolated system. The first law of thermodynamics is an expression of the conservation of energy principle. Agricultural Engineering Dairy and Food Engineering MCQ, Quiz, Multiple Choice, Objective Type, Online Mock Test Questions and Answers Pdf Free Download for various Competitive Exams like JRF, SRF, NET, ARS, GATE, IFS, State Public Service Commissions Exams 2024, 2025, 2026. Answer: William Thomson. Exercise 50. Apr 16, 2024 · 24. c. Assume the air flow through the engine can be. 3 m 3 /min of nitrogen (M = 28; k = 1. Engineering Physics Questions and Answers – Maxwell’s Equations. D. If the initial internal energy of the gas was 40 J, then The First Law of Thermodynamics Multiple Choice Questions (MCQs) with Answers PDF, First Law of Thermodynamics MCQs PDF e-Book download Ch. (An-Oct’2002,2011,2009) 5. Analyze the work and heat interactions associated with a prescribed process path Sep 4, 2015 · 1. Thermodynamics Practice Exam Key Note: Allproblemsincludedinthispracticeexamaredrawnfromproblemsusedinprevioussemesters. (D) Dalton’s law. 89 MB Format :PDF, ePub Thermodynamics 2 Problems And Solutions Pdf Download : Physical Chemistry Thermodynamics Problems And Solutions Pdf 498 Read :465 The University does not release solutions to past exam questions, but numerical answers are: 2013 (b) Qout=500kJ, max η=37% 2014 (a) 57%, (b) 54%. Thermodynamics is a branch of physics which deals with the energy and work of a system. It covers basic concepts in thermodynamics including definitions of thermodynamics, thermal engineering, macroscopic and microscopic approaches. Oct 18, 2023 · Here are some advanced mechanical engineering interview questions for experienced mechanical engineers. In a thermal process, the pressure of a fixed mass of a gas is changed in such a manner that the gas molecules give out the heat of 30J and work of 10J is done on the gas. SYLLABUS. Mechanical Engineering, Physics, Chemistry, Statistical Thermodynamics MCQ, Quiz, Multiple Choice, Objective Type, Question Bank, Online Test, Mock Test Questions and Answers Pdf Free Download for various Interviews, Competitive Exams and Entrance Test. Solution: Apr 8, 2024 · Preparing for a thermodynamics engineering interview can be daunting, but with the right guidance and practice, you can excel in this stage. How do pipes and tubes differ? Answer: Pipes are measured by internal diameter, while tubes are measured by external diameter. This distinction is important in mechanical engineering. What is meant by isothermal process? Answer: The process in which the temperature of the system remains constant is called as isothermal process. Ramakrishna / Anuradha Publisher OUTCOMES: 1. 100+ Subjects. pdf. Define the term thermal engineering. (B) of opposite signs. The better you understand thermodynamics, the better you’ll be able to answer thermodynamics Chemical Reaction Engineering a First Course pdf Questions Answers - Set 14 Basics of Chemical Engineering Thermodynamics pdf Test Questions - Set 08 In the regenerative cycle. An open system in which the rate of passage of mass and energy does not change with time. work, heat, entropy. The First Law of Thermodynamics . In this state the Chemical Engineering. CENG. 13 – Thermodynamics Past Exam Questions with answer outlines Warning! Read and think about this paragraph before looking further. Exercise 62. b) the entropy of the world tends towards a maximum. A system envelope which permits both mass and energy to cross its boundaries. which is very easy to understand and improve your skill. 4) (20%, partial credit given) A high speed aircraft is traveling at M=3 at 11km altitude. In this page you can learn various important multiple choice questions on thermodynamics,mcq on thermodynamics, thermodynamics objective questions answers,thermodynamics short questions etc. c) both of the mentioned. (B) cannot transfer either energy or mass to or from the surroundings. 38 fluid mechanics Questions and answers are presented below. State Zeroth Law of Thermodynamics. A thermodynamic system which is not influenced by the surrounding. Practice Zeroth Law of Thermodynamics MCQs , First Law of Thermodynamics trivia questions and answers PDF to learn free online courses. At Quizlet, we’re giving you the tools you need to take on any subject without having to carry around solutions manuals or printing out PDFs! Now, with expert-verified solutions from Fundamentals of Engineering Thermodynamics 8th Edition, you’ll learn how to solve your toughest homework problems. Fall 2003. Thermodynamics key facts (6/9) • Radiation is heat energy transfer by emission of electromagnetic radiation. An introduction to Thermodynamics / YVC Rao / New Age 4. Whalley This introduction to thermodynamics for engineering students assumes no previous instruction in the subject. Properties of systems like intensive and extensive Download link is provided and students can download the Anna University ME8391 Engineering Thermodynamics (ET) Syllabus Question bank Lecture Notes Part A 2 marks with answers Part B 13 marks and Part C 15 marks Question Bank with answer, All the materials are listed below for the students to make use of it and score good (maximum) marks with Consider the following statements: The definition of1. and 10. Below article will solve this puzzle of yours. (A) Avogadro’s hypothesis. . 8. 25. MCQ: For any irreversible process, the net entropy change is. 1. d) qE + q (v X B) View Answer. 38 × 10 −23 J/K, For the purposes of this chapter, we will not go into calculations using the ideal gas law. a q cycle-part c < 0. At Quizlet, we’re giving you the tools you need to take on any subject without having to carry around solutions manuals or printing out PDFs! Now, with expert-verified solutions from Fundamentals of Engineering Thermodynamics 9th Edition, you’ll learn how to solve your toughest homework problems. For example in a pendulum, energy continually goes to/from kinetic energy and potential energy. caih. (Mu-Oct’2000) 2. Sanfoundry Certification Contest of the Month is Live. EXERCISE 1. Some key concepts covered include systems, processes, properties, equilibrium, cycles, laws of thermodynamics, and more. Use of Thermodynamics and Its Applications, 3rd ed. THERMODYNAMIC PROPE RTIES. 1 summary; 2. One of the series is called Thermodynamics for Engineers, another is Heat Transfer. (C) Joule’s law. A heating unit is made in the form of a vertical tube of 50 mm outside diameter and 1. The document aims to help with mechanical engineering interviews by testing knowledge of thermodynamics vocabulary. PVT surface. Boettner, Margaret B. Jun 18, 2021 · So these Engineering Thermodynamics MCQs cover all the topics of Thermodynamics. (D) is a specified region where transfers of energy and/or mass takes place. Closed - A closed thermodynamic system can Interview Questions Based on Engineering Thermodynamics 24. (Mu-Apl-’2000,2009) 3. k. - 2 5. Define: PMM of first kind Ans: PMM of first kind delivers work continuously without any input. b) Increase turbulence in flow for enhancing heat transfer. 1) Why Entropy decreases with increase in temperature? It is a potent monoamine reuptake inhibitor and has been used to treat the major depressive disorders in india and other parts of the world for last 25 years. jhu. 9. Chapter Goal: To expand our understanding of energy and to develop the first law of thermodynamics as a general statement of energy conservation. Yuri G Melliza. This document provides one-word answers to questions related to thermodynamics concepts. Exercise 111. These are homework exercises to accompany the Textmap created for "Chemistry: The Central Science" by Brown et al. Engineering GATE, JEE Exams Thermodynamics Quiz, Objective Type, Multiple Choice, Gk, Online Test, Mock Test Questions with Answers Pdf Free Download for various Interviews, Competitive Exams and Entrance Exams. A great deal of effort, time, and money has been spent in the quest for the so-called perpetual-motion machine, which is defined as a hypothetical machine that operates or produces useful work indefinitely and/or a hypothetical machine that produces more work or energy than it consumes. Exergy Questions and Answers PDF Download eBook. It violates first law of thermodynamics, It is impossible to construct an engine working with this principle. mondal’s & p k nag exercise problems solved thermodynamics ies gate psu’s tancet & govt exams 20 years question answers (complete solution with tips – basic concepts) for mechanical engineering – pdf free download; 2 download links. temperature is due to zeroth law of thermodynamics2. There are three kinds of thermodynamic systems. Please be advised that external sites may have terms and conditions, including license rights, that differ from ours. School of Engineering, University of Edinburgh Engineering Thermodynamics 2 and Thermodynamics (Chemical) 2. Thermodynamics Questions and Answers - Practice questions, MCQs, PYQs, NCERT Questions, Question Bank, Class 11 and Class 12 Questions, NCERT Exemplar Questions, and PDF Questions with answers, solutions, explanations, NCERT reference, and difficulty level in thermodynamics chemistry. These MCQs are very helpful in your preparation for the National Eligibility cum Entrance Test-UG (NEET) and JEE mains. Dec 8, 2022 · DOWNLOAD. C. What is the first law of thermodynamics? May 4, 2024 · engineering-thermodynamics-important-questions-answers 2 Downloaded from resources. View Answer. d) none of the mentioned. It contains 65 questions and their corresponding one-word answers. Discharge is at 311 KPa. MCQ: The second law of thermodynamics implies that the cycle efficiency of thermodynamic process must be. Products are favored at high T; reactants are favored at low T. Energy can cross the boundaries of a closed system in the form of heat or work. 2) Explain the laws of Thermodynamics. This document contains study material for the Engineering Thermodynamics course including: - Sample questions from Unit I on basic concepts and the first law of thermodynamics and Unit II on the second law and availability analysis. ME 6301- ENGINEERING THERMODYNAMICS TWO MARKS QUESTION AND ANSWER. Engineering Thermodynamics – K. A. Anna University MCQ Q&A, Notes, Question Bank, Question Paper for Engineering Thermodynamics - ETD - (ME8391) [ET, ETD] semester exams. Hence it is very important for the mechanical engineers. MCQ: In polytropic expansion process, work done is. edu on 2020-07-12 by guest 1992 P. NEXT POST Anna University Internal Marks – UG/PG Examinations. Ans:First of thermodynamics states that when system undergoes a cyclic process the net heat transfer is equal to work transfer. Compilation of interview questions and answers on thermal engineering for engineering students. Thermodynamics – An Engineering Approach – Yunus Cengel & Boles /TMH 3. The changes in KE and PE are negligible. Chapter 20: Entropy and the Second Law of Thermodynamics. - Example problems covering topics like steady flow energy equations, gas processes, heat engines, compressors and turbines. Q36. 2021-11-18 This … . 15. - The full study material can be 2 MARKS QUESTIONS 1. State the Kelvin - Planck statement of second law of thermodynamics. MCQ: If there is no heat transferred Chapter 20: Entropy and the Second Law of Thermodynamics. Ans. So quasi-static process means nearly static process or nearly stationary process, or a process which proceeds with extreme slowness. reversibility is due to Kelvin-Planck's ststement of these statements. With Expert Solutions for thousands of practice problems, you can take the guesswork out of studying and move forward with confidence. The velocity of molecules in the solution is increasing. Our resource for Introduction to Chemical Engineering Thermodynamics includes answers to chapter exercises, as well as detailed information to walk you through the process step by step. Exercise 63. B. Moran, Howard N. No other aids or documents are permitted. The book covers the first and second laws of thermodynamics Mechanical Engineering Thermodynamics Quiz Questions with Answers Pdf Free Download for various Competitive Exams like IAS, IES, KPSC, MPSC, Diploma, TNPSC, SSC, UPSC, AE, Railway, Civil Service Examinations. We have provided these questions in PDF format which you can Download by clicking the link “Thermodynamics JEE Questions” provide below Download link is provided below to ensure for the Students to download the Regulation 2017 Anna University ME8391 Engineering Thermodynamics Lecture Notes, Syllabus, Part-A 2 marks with answers & Part-B 16 marks Questions with answers, Question Bank with answers, All the materials are listed below for the students to make use of it and score Good (maximum) marks with our study materials. 𝜎𝜎=Stefan-Boltzmann constant, 𝐴𝐴=surface area of emitter, 𝑇𝑇=temperature of emitter (assumes emissivity=1) Thermodynamics key facts (7/9) • Ideal gas Answer: 3) a)-iv b) i c) ii d) iii. May 7, 2012 · Multiple Choice Questions 1. Open - An open thermodynamic system can exchange both energy and matter with its surroundings. Compilation of basic interview questions on thermodynamics for engineering students. (A) is one in which mass within the system is not necessarily constant. Calculate the energy in Joule that must be given to freeze one kg of water, assuming the residential refrigerator is a reversible engine operating between the melting point of ice and the room temperature of 27°C. (A) Part of the steam is withdrawn from the turbine and is used in eating the feed water. Ques. Question: 3. Heat-Transfer Mechanisms. 2: The First Law of Thermodynamics and Some Simple Processes. AnswerALL QUESTIONS. ME3391 Engineering Thermodynamics Reg 2021 Questions Bank 4 PDF Download ; important questions and answers, University question paper pdf download, Question bank Exercise 11. The solution’s temperature increase is proportional to its Δ H v a p o r i z a t i o n . entropy is due to first law of thermodynamics3. Clausius summarized the first and second laws of thermodynamics as. ∆𝑄𝑄 ∆𝑡𝑡. A process that occurs so rapid in a system that no transfer of energy as heat occurs between the system and its environment is called. The document is compiled by an assistant professor and contains 33 questions and answers on these thermodynamics topics. Each Question carries a different mark distributed as shown [ ] Thermodynamic properties of various fluids are given in Rogers and Mayhew tables provided. 5 J/kg-K, p. Exercise 12. Processes (Ideal Gas) A steady flow compressor handles 113. Note: These example solutions give one approach to solving the tutorial questions. Quasi-static process proceeds from one equilibrium state to another 1. a) the energy of the world is constant. 0MB ) 13. 18. Shapiro, Daisie D. 9/5 - 16 Reviews. The problems involve calculating things like final pressure given an initial pressure and temperature change, volume of gas given initial and final pressure/temperature, piston displacement and power output of an air compressor Aug 5, 2019 · Michael J. You are strongly encouraged NOT to look at these answer notes until you have tried some past paper questions for yourself. (B) Part of the steam is withdrawn from the turbine and is used in heating the steam being supplied to the turbine. Exercise 64. First Law of Thermodynamics MCQs: Questions and Answers PDF Download. This document provides an overview of ME 6301 Engineering Thermodynamics compiled by Bibin C, an assistant professor. The Specific Heats of Gases . 1 s. - 2 This document contains 10 practice problems from engineering board exams covering topics like thermodynamics, heat transfer, fluid mechanics, and material properties. Downloded From : www. (C) steeper for an isothermal than for an adiabatic process. B. 6. This is available as a PDF file for free download below. internal energy is due to second law of thermodynamics4. Just take a look. Steam – formation and its thermodynamic properties – p-v, p-T, T-v, T-s, h-s diagrams. At Quizlet, we’re giving you the tools you need to take on any subject without having to carry around solutions manuals or printing out PDFs! Now, with expert-verified solutions from Fundamentals of Thermodynamics 8th Edition, you’ll learn how to solve your toughest homework problems. 19. The solution is undergoing a phase change. a. Example - A vessel of boiling water on a stove is an open thermodynamic system, since both energy (heat) and matter (water vapor) is lost to the surroundings. 0 atm. Ans: Thermal engineering is the science that deals with the energy transfer to practical Jul 5, 2017 · It covers topics like the second law of thermodynamics, Carnot cycle efficiency, heat pumps, refrigerators, coefficient of performance, availability analysis, and vapor compression refrigeration cycles. (An- Apl-’2003) 4. S. where the atmospheric temperature is 217K. Exercise 52. The constant k is called the Boltzmann constant and has the value k = 1. Final Exam. 11-1 to study Engineering Physics Course. Exercise 110. Thermal Properties of Matter . A process or combination of processes undergone by a system, as a result of which the system is restored to its initial state is called a cycle. (A) identical for both the processes. Learn Engineering Thermodynamics MCQ questions & answers are available for a Mechanical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. List of topics covered in Thermodynamics question bank with solutions (Q&A) for Mechanical engineering/BTech second year: Unit 1: Basic Concepts and Definitions 10. 3 Hours. T 1 = 27 + 273 = 300 K in this case. L = 80 cal g-1 when the water temperature is 0°C. This set of Engineering Physics Multiple Choice Questions & Answers (MCQs) focuses on “Maxwell’s Equations”. 17. Jan 3, 2017 · Thermodynamics most frequently asked question at the viva or Interview: 1. Write the two statements of the Second law of thermodynamics. 40 Thermodynamics. (D) Steam is reheated after expansion and again used. When the two bodies one hot and the other cold, are placed in contact with each other, then the hot body loses heat and becomes colder and the cold body gains heat and becomes hotter, and this process continues till the thermal equilibrium is reached. Calculation of work done and heat transfer in non-flow and flow processes. Constant volume process is also called. Determine the heat transfer for a system that performs 200 J of work on its surroundings and has a change in internal energy of 50 J. Engineering College, Karur-639111 Department of Mechanical Engineering, Engineering Thermodynamics 2 Marks Question and Answers Unit I - Basic Concept and First Law. PRACTICE PROBLEMS FOR ENGINEERING THERMODYN AMICS. E: Chemical Thermodynamics (Practice Problems with Answers) is shared under a license and was authored, remixed, and/or curated by LibreTexts. What is meant by Quasi-Static Process in Thermodynamics? Quasi means nearly or almost. pdf - Google Drive. Sep 15, 2023 · Engineering Thermodynamics Questions and Answers 1. DEPARTMENT OF MECHANICAL ENGINEERING. State Carnot's theorem. 26. 5. A system in which energy may cross its boundaries, but not the mass. It consists of four reversible processes: isothermal expansion, adiabatic expansion, isothermal compression, and adiabatic compression. 38 × 10 −23 J/K, k = 1. - 1 “How to Download PDF of R K Kanodia Thermodynamics Previous 12 Years Gate Questions with Solution for IES GATE SSC TNPSC TANCET & GOVT Exams Free Download Free?” You all must have this kind of questions in your mind. The solution is at boiling point. 2 about the book (material) This set of Engineering Physics Multiple Choice Questions & Answers (MCQs) focuses on “Thermodynamics – 1”. Energy transfer across a system boundary due solely to the temperature difference between a system and its surroundings is called heat. - 1 Apr 10, 2023 · I am sharing Thermodynamics question bank with answers and solutions in Q&A format for Mechanical engineering/BTech second year. Aug 24, 2022 · UNIT IV PROPERTIES OF PURE SUBSTANCES ME3391 Engineering Thermodynamics. What is the name of the following statement: “When two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium with each other”? (A) First Law of Thermodynamics (B) Second Law of Thermodynamics (C) Mechanical equivalent of heat (D) Zeroth Law of Thermodynamics Apr 1, 2023 · A: The Carnot cycle is a theoretical thermodynamic cycle that describes the most efficient possible heat engine. b) q (v X B) c) ma + qE. Power =. Explanation: The term thermodynamics was coined by William Thomson in 1749. Reading Quizzes. ( PDF - 2. Gravitational acceleration, g = 9 m/sec 2 Fluid Mechanics Questions and Answers. d) Increase temperature gradient so as to enhance heat transfer. - 1 Thermodynamics - An Engineering Approach_ 5Th Cengel Boles. MCQ: The ratio of increase of exergy of surroundings to loss of exergy of system is called. State true or false: Thermodynamic potentials are quantitative measures of the external energies associated with the system. In this article, we will provide you with 35 Thermodynamics Interview Questions along with sample answers to help you ace your interview. 40 class notes and handouts and a hand calculator are permitted. Determination of dryness fraction. c) Surface area is maximum to promote the rate of heat transfer. What is an ideal gas in thermodynamics? A gas that obeys the ideal gas equation at all pressure, temperature and volume is called as ideal gas. Find step-by-step solutions and answers to Thermodynamics: An Engineering Approach - 9780073529325, as well as thousands of textbooks so you can move forward with confidence. Bailey Fundamentals Of Engineering Thermodynamics Wiley ( 2014) ( 1) Bookreader Item Preview Solution: Using the first law of thermodynamics: Δ U = Q – W: \ [ \Delta U = 400 – 300 = 100\, \text {J} \] See also Heat transfer conduction – problems and solutions. 2. Exams Chapter 4 The First Law of Thermodynamics. 3 hr, 9 am – 12 noon. MCQ: The ratio of specific heat capacity at constant pressure to specific heat capacity at constant volume is always. Which of the following is the expression for Lorentz force? a) qE. (D) steeper for an adiabatic than for an isothermal process. It is an important topic for many areas of engineering, including mechanical engineering, chemical engineering, and electrical engineering. = 𝜎𝜎𝐴𝐴𝑇𝑇. net 4/9/2016 152 TOP Thermodynamics - Mechanical Engineering Multiple choice Questions and Answers List 152 TOP Thermodynamics - Mechanical Engineering Multiple choice Questions and Answers List Thermodynamics Questions and Answers pdf free download 1. State Clausius statement of second law of thermodynamics. (C) is a region of constant mass and only energy is allowed to cross the boundaries. (B) First law of thermodynamics. 399) measured at intake where P1= 97 KPa and T1= 27 C. treated as an ideal gas with constant specific heats (R = 287 J/kg-K, c = 1003. Thermodynamics. 2 m height. Mechanical Engineering Thermodynamics Objective Questions and Answers Pdf Free Download for various Interviews, Competitive Exams and Entrance Exams like GATE, CAT, MAT, SAT, XAT, TANCET MCA and MBA Exams. Entropy Questions and Answers PDF Download eBook. - 2 where P is the pressure of a gas, V is the volume it occupies, N is the number of particles (atoms or molecules) in the gas, and T is its absolute temperature. ( PDF - 1. Fill in the blanks: _____ coined the term thermodynamics. edu on 2019-09-01 by guest Solution Thermodynamics Important Questions And Answers … WebFeb 23, 2024 · Problems And Solutions On Thermodynamics And Statistical Mechanics (Second Edition) Swee Cheng Lim,Choy Heng Lai,Leong-chuan Kwek. CLICK HERE. (C) Power is generated in two stages. Engineering Thermodynamics MCQ question is the important chapter for a Mechanical Engineering and GATE students. It also defines closed, open and isolated systems and provides examples. Dairy and Food Engineering MCQ Questions Pdf. 4. 1st law of thermodynamic states that internal energy of system tends to increase if energy is. Please answer each question in a separate exam book. 10. Aug 17, 2019 · 2. The statement that molecular weight of all gases occupy the same volume at NTP is known as. May-08-2024 | Meritnotes. PREVIOUS POST Anna University Special Case – Nov/Dec 2022 Examinations. Calorimetry . 1 V. Entropy is different: No conservation law – the entropy change ΔS associated with an Exercise 109. Explain zeroth law of thermodynamics? Answer: The zeroth law of thermodynamics states that if two systems, A and B, are in Chemical Engineering Thermodynamics Problems And Solutions Pdf 9781139498180 Genre :Technology & Engineering Laws Of Thermodynamics File Size : 23. You may be offline or with limited connectivity. ll ti en sc bl ww hk dd ue az