Buchholz Relay Construction and Working Principle
Buchholz Relay | Construction and Working Principle

Buchholz Relay For a protection of transformer Buchholz relay in transformer is mounted on the connecting pipes between the main tank & the conservative tank. It consists of two element.…

Difference between Synchronous Motor and Induction Motor
Difference between Synchronous Motor and Induction Motor

The following are the main comparison between Synchronous Motor & Induction Motor Sr. No.Synchronous MotorInduction Motor1.It is not self-starting.It is self-starting motor.2.It runs at a constant speed known as synchronous speed.Its…

Difference between HVDC and HVAC
Difference Between HVDC and HVAC

HVDC HVDC stand for High Voltage Direct Current. It refers to a system of transmitting electrical power using direct current (DC) at high voltage levels. This method is commonly used…

Moving Iron Instrument | Advantages & Disadvantages
Moving Iron Instrument | Advantages & Disadvantages

Moving Iron Instrument There are indicating instrument which are used to measure current & voltage. In moving iron instrument the movable system consists of one or more pieces of specially-…

Electrical Resonance Type Frequency Meter
Electrical Resonance Type Frequency Meter

Frequency Meter A frequency meter is a device used to measure the frequency of an electrical signal, which can be an alternating current (AC) power supply, radio waves or any…

PMMC Instrument Construction & Working Advantages & Disadvantages
PMMC Instrument | Construction & Working | Advantages & Disadvantages

PMMC A permanent magnet moving coil instrument can measure DC voltage & current. The working principle of these instrument is the same as that of the D' Arsonval type of…