Methods of Booster Transformer in Electric Traction: In ac traction system return current mainly flows to the substation through track leaving a small portion, which flows through ground because of…
Major Traction Substation Equipments: The Major Traction Substation Equipments are namely, traction transformer circuit breakers and interruptor. 1. Traction Transformer Transformers are required to step down the grid supply voltage…
Systems of Track Electrification AC Electrification System: As even in single phase electrification, the substations are necessarily required to keep the voltage drop within permissible limits. The type of substations…
Electric Welding Machine Working Principle: The electric welding machine sets may be either dc or ac type. 1. DC Welding Sets: Such sets are of two types namely (i) generator…
Resistance Welding Machines - Overview and Circuit Diagram: Resistance welding machines incorporates a transformer, suitable electrodes for supplying current to the weld and arrangement for controlling the mechanical pressure, and…
Protection of AC Generators and Motors Interview Questions and Answers: 1. What are the common types of generator faults ? Ans. The common types of faults occurring in synchronous generators…
AC Regulator - Definition and Classification: An ac regulator converts a constant ac voltage into a variable ac voltage of the same frequency. No doubt, ac voltage level can be…
Gas Actuated Relays: Gas Actuated Relays - When a fault occurs inside the transformer tank gas is usually generated, slowly for an incipient fault and violently for heavy faults. Most…