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Split Phase Motor

Split Phase Motor: When a motor is provided with two windings, even though these are excited from the same voltage (supply being single-phase), the currents in the two windings can…

Single Phase Two Winding Motor

Single Phase Two Winding Motor: Single Phase Two Winding Motor - To understand the field phenomenon that contributes towards the generation of starting torque in a single-phase motor, it greatly…

Phase Conversion in Transformer

Phase Conversion in Transformer: Three Phase to Two Phase Conversion Transformer (Scott-T transformer or Scott Connection): Phase conversion from three to two phase is needed in special cases, such as…

Why we need for Power System Protection?

Why we need for Power System Protection? Need for power system protection are growing fast with more generators, transformers and large network in the systems. For system operation a high…

Important Questions of Unsymmetrical Fault

Important Questions of Unsymmetrical Fault: 1. What is a 3-Φ unsymmetrical fault ? Discuss the different types of unsymmetrical faults that can occur on a 3-Φ system. 2. Discuss the…

Unsymmetrical Fault Articles

Unsymmetrical Fault Articles: Unsymmetrical Faults on Three Power System: Those faults on the power system which give rise to unsymmetrical fault currents (i.e. unequal fault currents in the lines with…

Principles of Power System Articles

Principles of Power System Articles: This Principles of Power System Articles which includes the following topics: Electrical Energy Definition Different Types of Energy Sources Unit of Energy Energy Efficiency Definition…

What is Summation Transformer?

What is Summation Transformer? Summation devices are employed to compare the relaying quantities derived from the currents in the three phases of the primary circuit. The effectiveness of the comparison…