Neutral Grounding Practice in Power System
Generally on neutral grounding is provided at each voltage. There will be several voltage levels between the generation of the power and distribution of the power in the power system.…
Shunt Capacitor Advantages in Power System
Normal loads on ac supply system are inductive in nature (eg: motors, power transformers, voltage regulators, induction furnace, choke coils, magnetic systems, discharge tubes etc) Inductive power requires reactive power…
Crowbar fault protection circuit
Crowbar circuit is used to protect circuit or equipment under fault condition Over Current Causes: Over current flow through thyristors in a circuit due to: Flow of short circuit current…
R R-C Firing Circuits Disadvantages
Firing Circuits: Gate triggering is the most commonly used turn-on method employed to switch on the thyristors. Triggering circuits is also called firing circuits. There are various firing circuits available.…
Importance of Hysteresis Loop
Hysteresis Loss: When a magnetic material is subjected to a cycle of magnetization (magnetized first in one direction and later magnetized in opposite direction in a cyclic manner), an energy…
Advantages of Star and Delta Systems
In a 3-phase system the alternators or generators may be star connected or delta connected. Likewise 3-phase loads may be star connected or delta connected. Some of the advantages of star and…
Generator Protection Interview Questions & Answers
Synchronous Generator Protection Interview Questions Answers What are the common types of generator faults? The common types of faults occurring in synchronous generators are: Stator winding faults (phase to phase…
Induction Motor Protection Interview Questions Answers
Induction Motor Protection Interview Questions Answers What are the type of faults that are likely to occur in operation of 3 phase induction motor? The faults which are likely to…
Transmission Lines Protection Questions Answers
Transmission Lines Protection Questions Answers What is meant by Tine Graded Protection? Time Graded protection is a scheme of over current protection, in which the discrimination is incorporated i.e, the time…
High Voltage and Power System Stability Interview Questions
High Voltage (HV) Interview Questions Answers Why Earth Wire is provided in the overhead transmisssion lines? Earth wire is provided above the overhead transmission lines for protection against lightning strokes.…
