Inst Tools - Instrumentation, Electrical, PLC Tutorials

Advantages & Disadvantages Electromagnetic Relays

In Electromagnetic relays operating current flows through the coil. When this operating current increases, coil energizes the electromagnet. When the

Generally on neutral grounding is provided at each voltage. There will be several voltage levels between the generation of the

Normal loads on ac supply system are inductive in nature (eg: motors, power transformers, voltage regulators, induction furnace, choke coils,

Crowbar circuit is used to protect circuit or equipment under fault condition Over Current Causes: Over current flow through thyristors

Firing Circuits: Gate triggering is the most commonly used turn-on method employed to switch on the thyristors. Triggering circuits is

Hysteresis Loss: When a magnetic material is subjected to a cycle of magnetization (magnetized first in one direction and later

In a 3-phase system the alternators or generators may be star connected or delta connected. Likewise 3-phase loads may be star connected

Synchronous Generator Protection Interview Questions Answers What are the common types of generator faults? The common types of faults occurring

Induction Motor Protection Interview Questions Answers What are the type of faults that are likely to occur in operation of

Transmission Lines Protection Questions Answers What is meant by Tine Graded Protection? Time Graded protection is a scheme of over current