Discussion
In DC traction systems, contact systems are fed from substations which are spaced ______ for suburban lines.
Answer: B
In a DC traction system the overhead line or third rail is fed from substations spaced along the track. For suburban lines, where trains run often and draw heavy currents at low voltage (600 V to 1500 V DC), the substations are close together, about 3 km to 5 km apart. The long spacings of 30 km to 50 km or 80 km to 100 km belong to high voltage AC main line electrification, and a spacing of 300 m to 500 m would be uneconomical, since every substation costs rectifiers and switchgear. The answer is option B.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development