Types of Cables Cables are classified depending upon the material used for insulation such as paper, rubber or asbestos. Paper[...]
Month: February 2019
Feeder ProtectionFeeder Protection
Feeder Protection The word feeder here means the connecting link between two circuits. The feeder cod be in the form[...]
Polyphase Energy MeterPolyphase Energy Meter
In polyphase circuit, the energy can be measured by a group of single-phase energy meters as required by Blondel’s theorem.[...]
Moving Iron InstrumentMoving Iron Instrument
Attraction type MI Instrument- The current to be measured is passed to the fixed coil. The spindle is fixed to[...]
Types of busesTypes of buses
In a power system various component are meet at buses. The generators feed energy to buses and loads draw energy[...]
A.C. PotentiometersA.C. Potentiometers
A.C. Potentiometers The most important difference between a de. And A.C. Potentiometers is that, in a d.c, potentiometer, only the[...]
Dynamometer type single-phase power factor meterDynamometer type single-phase power factor meter
Construction: It consists of a fixed coil FF (split into two parts) which carries the current of the circuit under[...]
Methods of improving stabilityMethods of improving stability
when the maximum power limit of various power-angle curves is raised, the accelerating area decreases and decelerating area increases for[...]
CRT (Cathode ray tube)CRT (Cathode ray tube)
The main part of oscilloscope is CRT. It is an electronic device that produce visual re presentation of electric effect.[...]
Polar type AC potentiometerPolar type AC potentiometer
Construction and Working Principle: This instrument consists of an ordinary dc potentiometer in which the resistance coils are non- inductive[...]