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Torque

Equation
torque, the turning or twisting moment of a force about an axis. the definition of torque, its formula, and how it is used in different applications.

Three Phase Induction Motors

Induction Motor Stator Frame

3 Phase induction motors are most widely used in industries. It has the following advantages: It is very simple and mechanically strong It has sufficiently high efficiency It is self-starting It requires a minimum of maintenance However, it has some…

Buchholz’s Relay System

Buchholz's Relay

The Buchholz’s system is used with oil immersed transformers. It consists of a gas operated relay. Whenever short circuiting occurs in the tank of a transformer, the winding temperature increases and the oil round the windings vaporizes. The insulation of…

Three Phase Transformer Connections

Delta/Delta (Δ - Δ) connection

The most commonly used connections for three phase transformers are: Star/Star Delta/Delta Star/Delta Delta/Star Star/Star (Y/y) connection: The connections are shown in Fig. 1(a). This connection is more economical for small size, high voltage transformer. Because the phase voltage is…