Informatics Publishing Limited

B. Vamsi Krishna ¹, S. Sudhakara Reddy ², R. Prasanna Kumar ¹

Affiliations
1 Department of Civil Engineering, Malla Reddy Engineering College (Autonomous), Secunderabad-500100, IN
2 Malla Reddy Engineering College (Autonomous), Secunderabad-500100, IN

Abstract

Choice Based Credit System (CBCS) is widely being practiced by many institutions in India since it has become signatory of the University Grants Commission (UGC). This has promoted in such away that different open elective courses should be offered by every department in engineering to other departments. This interdisciplinary of learning open elective courses by other department students especially in engineering education will have learning awareness and job oriented benefits. Choice based credit system is one of them. Engineering students require the opportunity to choose any open elective course from different departments and apply their knowledge to acquire jobs in that field of course. Learning and employment benefits are not only through their own course subjects but also through open elective courses. In this paper an attempt is made to analyze the various factors affecting the choice of an open elective by the students, to enhance teaching, learning and employment opportunities. In the present case study the subject green buildings offered by civil engineering department at our college to the students of other branches was taken as reference. It was observed that most of the CSE Students have shown enormous interest in choosing this subject for various reasons.All these factors associated with the selection of this subject by the CSE students is carefully evaluated and analyzed through qualitative and quantitative approach.

Keywords

CBCS, UGC, Open Elective, Green Buildings, IGBC.

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D. Sumathi ¹, S. Kannan ¹, S. Sudhakara Reddy ²

Affiliations
1 Department of Computer Science and Engineering, Malla Reddy Engineering College, Maisammaguda, Hyderabad, IN
2 Department of Mechanical Engineering, Malla reddy Engineering College, Maisammaguda, Hyderabad, IN

Abstract

"It is not what you teach and how you teach It is what your audience learns"

Recently the millennial learners occupy the classrooms. These learners are filled with their needs and characteristics. They need collaborative learning experiences, quick feedback and have low tolerance for boredom. The main challenge for the faculty is to keep the learners in the classroom fully engaged, challenged and focused. This paper discusses about the characteristics of millennial learners and the way of using technologies to reach the millennial learners in the classroom. The responsibility of the faculty is to create self-learners and life-long learners.

Keywords

Millennial Learners, Teamwork, Technologies, Flipped Classrooms, Learning Strategies, Engineering Institutions.

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S. Sudhakara Reddy ¹, S. Arumugam ², S. Ajay Kumar ³

Affiliations
1 Department of Mechanical Engineering, Malla Reddy Engineering College (Autonomous), Secunderabad – 500100, IN
2 Department of EEE, Malla Reddy Engineering College (Autonomous), Secunderabad – 500100, IN
3 Department of CSE, Malla Reddy Engineering College (Autonomous), Secunderabad – 500100, IN

Abstract

Undergraduate engineering students are vital part of any University / Institution and the institution should be in a position to show the good direction to them so that they will be placed in the good companies. The campus Recruitment procedure is based on, in-depth knowledge in the subjects and conducted through on line examinations. The conventional examinations based on pen and paper will not give the experience of an online examination. To overcome this drawback the autonomous institutions like ours have introduced the system of online examinations. The case study shows better results in the students' community in the online examination. This will help the students to face the placement drives in a better way in the future.

Keywords

Online Examinations, Results, Placements and Institution

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T. Ramachandran ¹, S. Sudhakara Reddy ¹, S. Jeyakumar ²

Affiliations
1 Dept. of Mech. Engg., Malla Reddy Engg., College, Secunderabad, Telangana, IN
2 Dept. of Mech. Engg., PSNA College of Engg., and Tech., Dindigul, Tamilnadu, IN

Abstract

Vibrations are found to be dangerous and reduce the life and reliability of the vehicle. The studies were carried out by many researchers to stiff the structures by increasing the wall thickness of the plates, rubber and to minimize the vibration by increasing the damping coefficient of the rubber materials. The conventional materials indicate an improvement in stiffness, but not satisfying the requirements of the engine vibration at different speed and load standards and also increased the mass of the structure. This research on the engine mount vibration isolation aims at developing an alternative material for the structures which exhibit good damping and stiffness characteristics. In terms of properties such as chemical resistance, ease of production, high strength to weight ratio and damping, composite materials are increasingly used in many engineering application where the vibration is predominant. In this paper, the steel plates are replaced by Al6061-SiC Metal Matrix Composites (MMC) and studies are carried out on the engine mount made of Al6061 MMC structural material and integrated with rubber. The static and dynamic properties of the Al6061MMC-rubber mounts are determined using experimental investigations. The harmonic analysis is also carried out to test the damping characteristics of the mounts.

Keywords

Al6061-SiC Rubber Mount, Damping, Mechanical Properties, Vibration Displacement, Vibration Acceleration.

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V. Sreeram ¹, S. Sudhakara Reddy ²

Affiliations
1 Engineering Officer-2, High Power Laboratory, Central Power Research Institute, Bangalore - 560080, IN
2 Joint Director, High Power Laboratory, Central Power Research Institute, Bangalore - 560080, IN

Abstract

High Voltage Direct Current (HVDC) lines running parallel to AC transmission lines will encounter electromagnetic induction which will rise to substantial levels during a short circuit. The actual magnitude of induced current depends on several factors like distance between the lines, soil resistivity etc. The unenergised DC line will also have a voltage due to induction and the associated discharging equipment will have to carry the induced current. This paper attempts to study the levels of induction encountered by the HVDC line and associated equipment during a short circuit in the AC line. It was observed that magnitude of induced current during steady state and three phase fault did not exceed 5 A while the magnitude of induced current during single phase to ground fault exceeded 15 A

Keywords

Double Circuit Transmission Lines, Electromagnetic Induction, HVDC, Short Circuit Currents

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B. Chandrasekhar ¹, Sanjay Lakshminarayanan ², S. Sudhakara Reddy ³

Affiliations
1 Senior Research Fellow, Energy Efficiency & Renewable Energy Division, Central Power research Institute, Bangalore - 560 080, IN
2 Associate Professor, Electrical & Electronics Engineering, MS Ramaiah Institute of Technology, Bangalore - 560054, IN
3 Joint Director, Energy Efficiency & Renewable Energy Division, Central Power Research Institute, Bangalore - 560080, IN

Abstract

Renewable energy sources (RES) are being increasingly connected in distribution systems utilizing power electronic converters. This paper presents an advanced control strategy for achieving maximum power quality benefits from the grid interfacing inverters when installed in 3-phase distribution systems. The grid tie inverter can be utilized as i) Power converter to inject power generated from RES to the grid and ii) shunt active power filters to compensate current imbalance, load current harmonics, reactive power demand and load neutral current. All of these functions may be accomplished either individually or simultaneously. This control concept is clearly explained with MATLAB/SIMULINK simulation results and THD is less than 5%.

Keywords

Renewable energy sources, grid tied inverter, active power filter, power quality

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V. Nagaraj ¹, Maroti ¹, S. Sudhakara Reddy ¹

Affiliations
1 High Power Laboratory, Central Power Research Institute, Bangalore – 560080, IN

Abstract

To establish traceability for high current measurements, comparison tests of high current shunts in High Power Laboratories have been carried out with STL reference shunts since 2005. This paper describes the comparison test results of shunts in High Power Laboratory CPRI Bangalore. The test results shown are the shunts tested for the comparison tests performed and most of the differences of the scale factor with power frequency current between the reference shunt and those tested in participating laboratories were less than 0.7 %.

Keywords

High current shunt, high power laboratories, uncertainty, intercomparision.

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V. Sreeram ¹, T Gurudev ¹, M. Rajkumar ¹, M. Maroti ¹, S. Sudhakara Reddy ¹

Affiliations
1 HPL, Central Power Research Institute, Bengaluru – 560012, Karnataka, IN

Abstract

The SFRA (Sweep Frequency Response Analysis) technique has become quite popular as a condition monitoring technique for transformers. The SFRA technique holds a vast repertoire of data in terms of the electromagnetic behaviour of the transformer. Much research has happened in comprehending this data but no effort has succeeded in determining a universal objective criterion for the interpretation of SFRA data. CIGRE study committee A2.53 has recently released Technical Brochure 812 which has been the result of nearly half a decade of international efforts in arriving at an objective criterion for the interpretation of SFRA. This paper discusses the state of the art in objective interpretation of SFRA data with special reference to TB 812. The paper also presents a case study in HPL where SFRA was compared to a conventional method.

Keywords

Frequency Response, Power Transformers, Statistical Analysis.

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V. Sreeram ¹, M. Rajkumar ¹, S. Sudhakara Reddy ¹, T. Gurudev ¹, Maroti ¹

Affiliations
1 Central Power Research Institute, Bangalore - 560080, Karnataka, IN

Abstract

Cables form the backbone of modern power transmission and distribution systems. Even though, short circuit faults are more common with overhead transmission lines than with underground cables, the thermal and dynamic stress associated with short circuit make it a mandatory withstand requirement. High Power Laboratory has been regularly carrying out short circuit tests on LT and HT cables. This paper presents an overview of the tests carried out and their results.

Keywords

Cable, Short-circuit Currents, Thermal Stresses .

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