Dear Sir,

Since you have asked the question based on your Delhi location, we are providing information based on Delhi.  Since you are a government employee it is better for you to do your courses under the Directorate of Training and Technical Education. This is their website and if you chick on ‘Service’ you will find entire details, even the affiliated institutes:

http://tte.delhigovt.nic.in/wps/wcm/connect/doit_tt/Training+and+Technical+Education/Home/

There are 12 Government Institutes of Technology/Polytechnics running diploma level courses affiliated to Board of Technical Education under Department of Training & Technical Education, out of which 2 are exclusively for girls and 10 are co-educational Polytechnics/Institutes. Courses offered in the Govt. Polytechnics/Institutes are Full Time Diploma Courses & Part Time Diploma Courses. Besides Government polytechnics/Institutes, Diploma Courses are also offered at two Govt. Aided Institutes & 7 Privately Managed BTE affiliated Institutes.

OPPORTUNITIES FOR (4 YEAR) PART TIME DIPLOMA COURSES IN EVENING FOR WORKING PROFESSIONALS:

Automobile Engineering, Civil Engineering, Electrical Engineering, , Mechanical Engineering.
Eligibility: 10th with Science, Maths & English and ITI or 10+2 (vocational) (for details refer to information bulletin of part time admission)

Good Luck