Journal of
Engineering and Technology Research

  • Abbreviation: J. Eng. Technol. Res.
  • Language: English
  • ISSN: 2006-9790
  • DOI: 10.5897/JETR
  • Start Year: 2009
  • Published Articles: 186

Table of Content: November 2010; 2(11)

November 2010

Reliability assessment of 3-phase three winding converter transformer of HVDC transmission system

  High voltage direct current (HVDC) is today recognized as an effective and efficient means of transmitting bulk power over long distances through over head lines or cables. The reliability of HVDC links have always been of primary concern in planning and operating of power systems. The existence of spares and maintenance practices do affect the availability of HVDC stations. The HVDC converter transformer...

Author(s): Devi L., Sai Babu C. H. and Siva Nagaraju S.

November 2010

Determination of weathered and fractured zones in part of the basement complex of North-Eastern Nigeria

  Two electromagnetic (EM) traverses and seven schlumberger vertical electrical soundings (VES) were carried out using “APEX MAXMIN” EM machine equipped with a transmitter and a receiver and a “GEOPULSE” resistivity meter to study formation strata that could host groundwater within the overburden and fracture/fault zones of the basement complex along Gwoza-Damboa road in Borno...

Author(s): Arabi S. A., Dewu B. B. M., Muhammad A. M., Ibrahim M. B. and Abafoni J. D.

November 2010

Two and three electrostatic lens systems for focusing of charged particles

  Design of the focusing lens system has been done by using SIMION computer program which is used to trace and simulate the ion beam during its transport. A parallel beam of singly charged nitrogen ions of diameter 2 mm with energy of 3 keV was started at a distance of 50 mm before entering the lens system. In order to design the system, we studied it with different parameters in the presence of space charge....

Author(s): M. M. Abdelrahman