Different Groups of Systems of Electric Traction: As already mentioned, systems of electric traction may be divided into two main groups. (1) The group consisting of vehicles which receive electric…
Different Types of Traction System: The various types of traction system commonly used are described below. 1. Direct Steam Engine Drive. The steam engine drive used to be widely employed…
Systems of Track Electrification DC Electrification System: The substations are necessary for control of electric supply to a considerably long network in systems of track electrification DC electrification system. DC…
Voltage Control Interview Questions and Answers: 1. Why is it necessary to keep the receiving-end voltage constant within specified limits ? Ans. For satisfactory operation of equipment/machinery supplied by the…
Bus Bar Protection Interview Questions and Answers: 1. Why use of single bus-bar arrangement is restricted to small and medium sized substations and small power stations ? Ans. The glaring…
Interconnected Systems Interview Questions and Answers: 1. Why are alternators put in parallel ? Ans. For high efficiency of operation, reliability, convenience and economy in maintenance and repair and possibility…
Electrical Energy Interview Questions and Answers: 1. What is the per capita consumption of electricity in India ? Ans. 631 kWh in 2006. 2. Why electrical energy is more useful…
Economics in Plant Selection: Economics in Plant Selection - The plant capacity and size depends upon the power demand. A power plant should be reliable i.e. its capacity must be…