Collection Of Electrical Questions Asked By Surendranath Sir Kochi MMD
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- Types of AVRs? Draw and Explain Static AVR
- What is Voltage trimmer Where it is used onboard ship
- Explain Star-Delta Starter ? Advatage and Disadvantage
- Emergency Generator requirements
- Explain Soft Starter
- Explain VFO.
- Difference between VFO and Soft Starter
- Deck Crane Safeties
- Explain IEC cables? What is IEC ? Which cable used for marine systems and high voltage system? Explained all 8 layers of cables and purpose of each layers
- Draw and Explain Different Material Of Cable
- Construction and working of induction motor?
- Under voltage trip testing
- Provision crane brake slipping? reasons?
- Gangway motor tripping? reasons?
- MSB to ESB drawing with emergency generator auto start
- What is cogging? How we can avoid cogging?
- What is crawling ? What is harmonics, How it can be removed, what is the reasons for harmonics in the supply?
- Explain VFD? No need of diagram. Where it is used? Advantages of VFD
- Explained ExD, what are the criterias for EXD and its maintenance. Where it is used onboard?
- Difference between contactor and relay
- Difference between induction motor and slip ring motor?
- Draw shore supply connection? Why there is a transformer is in the diagram? What all checks you will do before shore supply connection?
- Different types of transformer? How cooling achieved in transformer? What is the advantages of oil cooled transformer? Which types of transformer is used onboard?
- Boiler electrical safeties
- Advantages of Ni Cad batteries.
- Carbon pile regulator
- 3 Point Starter For DC motor
- Types of RPM Sensors And Working
- Diagram of synchroscope
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