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DC Ammeter

DC Ammeter: DC Ammeter - The PMMC galvanometer constitutes the basic movement of a dc ammeter. Since the coil winding of a basic movement is small and light, it can…

7 Segment Led Display Working Principle

7 Segment Led Display Working Principle: In 7 Segment Led Display, it is usual to employ a single LED for each segment. For conventional 7 Segment Led Display (including the…

Recent Trends in Power System Stability

Recent Trends in Power System Stability: Recent Trends in Power System Stability in design of large alternators tend towards lower short circuit ratio (SCR = 1/Xd), which is achieved by…

Transient Stability in Power System

Transient Stability in Power System: Transient Stability in Power System - It has been shown already that the dynamics of a single synchronous machine connected to infinite bus bars is…

Steady State Stability in Power System

Steady State Stability in Power System: The steady state stability limit of a particular circuit of a power system is defined as the maximum power that can be transmitted to…

Waveform of a Short Circuit Current on Transmission Line

Waveform of a Short Circuit Current on Transmission Line: Let us consider the Short Circuit Current on Transmission Line. Certain simplifying assumptions are made at this stage. The line is…

Derivation of Transmission Loss Formula

Derivation of Transmission Loss Formula: An accurate method of obtaining a general derivation of transmission loss formula has been given by Kron. This, however, is quite complicated. The aim of…

Voltage Profile of Transmission Line

Voltage Profile of Transmission Line: Control of Voltage Profile of Transmission Line at the receiving bus in the fundamental two-bus system was discussed already. Though the same general conclusions hold…