Collection Of Electrical Questions Asked By Surendranath Sir Kochi MMD

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Questions

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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