Construction of Screened cables
Screened cables These cables are used up to 33kv, but some particular cases it may be extended to operating voltages up to 66kv. It is further classified into two, H type and SL type...
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Construction of Belted cables
Classification of Cables according to their Construction: Electrical cable classification can be done on the basis of their construction as under: Belted cables — up to 22 kV Screened cables — from 22 kV...
Single Core Under Ground cable
Under Ground Cables An Under Ground Cables essentially consists of one or more conductors covered with suitable insulation and surrounded by a protecting cover. Under Ground Cables are used, where it is impractical to...
Under Ground Cables
An Under Ground Cables essentially consists of one or more conductors covered with suitable insulation and surrounded by a protecting cover. Under Ground Cables are used, where it is impractical to use overhead line...
Different types of insulators used in AC distribution system.
Types of insulators used in AC distribution system. Overhead line conductors should be supported on the poles or towers with the help of insulators. The insulator provide necessary insulation between the line conductors and...
Voltage regulation & Transmission Efficiency
Voltage regulation When transmission line carries the current, there is a voltage drop in the line due to resistance and inductance of the line. This results, the receiving end voltage VR is less than...
Types of D.C. Generators – Separately Excited and Self Excited
Types of D.C. Generators The magnetic flux in a DC machine is produced by the field coils carry current. The circulating current in the field wingdings produces a magnetic flux, and the phenomenon is...
E.M.F. Equation of a D.C. Generator
E.M.F Equation of DC Generator As the armature rotates and cuts the magnetic lines of force, a voltage is generated in its coils. The e.m.f. induces in the conductors according to ‘Faraday’s Law of...
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