JNTU Exam Papers,IV B.Tech II Semester Supplimentary Examinations,HVDC Transmission June 2007

IV B.Tech II Semester Supplementary Examinations, June 2007 HVDC TRANSMISSION (Electrical & Electronic Engineering) SET-IV 1. (a) Compare the power transfer capacities of A.C. and D.C. transmission systems when an existing A.C. line is converted into D.C. line, with following conditions: i. Same current and insulating level. ii. Same percentage losses and insulation level. (b) … Read more

JNTU Exam Papers,IV B.Tech II Semester Supplimentary Examinations,HVDC Transmission June 2007

IV B.Tech II Semester Supplementary Examinations, June 2007 HVDC TRANSMISSION (Electrical & Electronic Engineering) SET-III 1. Write Technical notes on the following. (a) Back-to-Back HVDC coupling system. (b) Back to back DC link along with AC feeder. 2. (a) Clearly explain how harmonics are produced and obtain the expression for rms value of the fundamental … Read more

JNTU Exam Papers,IV B.Tech II Semester Supplimentary Examinations,HVDC Transmission June 2007

IV B.Tech II Semester Supplementary Examinations, June 2007 HVDC TRANSMISSION (Electrical & Electronic Engineering) SET-II 1. What is the need for interconnection of systems? Explain the merits of connecting HVAC systems by HVDC tie-lines? 2. Draw the circuit diagram voltage and current wave form of a 3φ, 6 pulse uncontrolled bridge rectifier and derive the … Read more