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Circuit Breaker Interview Questions & Answers
What is a Circuit Breaker? Circuit Breaker is a mechanical device designed to close or open contact members, thus closing ... -
Advantages & Disadvantages of Oil Circuit Breakers
Oil circuit breakers are the oldest type of circuit breakers. The separating contacts of the oil circuit breakers are made ... -
Ungrounded or Isolated Neutral System Disadvantages
There will be no flow in the zero sequence currents In ungrounded or isolated neutral system there will be little ... -
Advantages & Disadvantages of AC and DC Power Transmission
AC and DC modes of transmission and distribution of power has both advantages and disadvantages: DC requires only two conductors ... -
Advantages of Suspension Insulators and Pin type Insulators
With increase in the operating voltage the insulation requirement will also increases. Transmission system will have transmission voltages as high ... -
Functions of Instrument Transformers (CTs and PTs)
AC type protective relays are actuated by the current and voltage supplied by the current and potential (voltage) transformers which ... -
Advantages & Disadvantages of Synchronous Motors
In industries induction motors are employed mostly because of less cost, rugged construction, good starting torques and very less maintenance. ... -
Advantages & Disadvantages Electromagnetic Relays
In Electromagnetic relays operating current flows through the coil. When this operating current increases, coil energizes the electromagnet. When the ... -
Advantages & Disadvantages of Air Insulated Substation
Air Insulated Substation (AIS) or Outdoor Substations have all switchgear equipment, busbars and other switchyard equipment installed outside open to ... -
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 ...
Author: Bharadwaj
