"After reading so much helpful contents on this blog now I started the process for admission for PhD. At certain universities, I found PhD (Doctor of Philosophy) and Doctor of Engineering. What’s the exact difference between these two?"
D.Eng. vs Ph.D.
A Doctor of Engineering (D.Eng.) program prepares women and men to work at the highest levels of the engineering profession. This program emphasizes solving problems that arise from using technologies beneficial to mankind.
However, those problems and their solutions also frequently affect society at large in nontechnical ways.
Therefore, technological advances implemented through business and industry require direction by persons possessing both high technical competence and professional understanding of the social, political and institutional factors involved.
Graduates of the D.Eng. program are uniquely qualified to fulfill that important role.
This program prepares individuals for professional engineering careers in business, industry and the public sector.
It is not intended as a research degree nor as preparation for a faculty position at a research university. That is the province of the Doctor of Philosophy (Ph.D.) program.
The D.Eng. program emphasizes engineering practice, public service and the development of leadership potential, not basic research.
D.Eng. graduates are prepared to move quickly into positions of responsibility and authority. Therefore, students are required to take courses in business and communications, supplemented by elective graduate courses.
With this background, professional activities can and often do encompass both technical and nontechnical fields.
Positions of leadership call for interaction between technology and society; communication is required not only with other engineers but also with other professionals, laymen, and workers.
The ability to think and express oneself clearly is essential. [Via TAMU]
Related: Yes or No: Is PhD Right for Me?