Explain mechanical rotational system?

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what is the diff between mcb and vcb

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what is the purpose of vector group in a transformer ? if 2 tranaformers r connected in parallel the vector group is same or not? for parallel operation 2 transformers of different manufacturers maintain same vector group or not?

3 Answers   Orchid,

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How much load can be taken for chiller from 1500 kva transformer

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what will happen if we directly give supply to rotor of a induction motor?

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what is the type of winding connection( star or delta) in 1HP to 5HP motors. How to check the motor winding connections( star or delta) if not provided in the nameplate?

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The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.

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what is derating?, why it is neccesary, it is same for all means for drives, motors,and cables.

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What is the general system requirement of alternator?

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how we are desining 63.5 ohm resistor for NGR of alternator?

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WHY HUMMING SOUND OCCURED IN HT TRANSMMISSION LINES?

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does not the circulating current in a transformer affect the flux distribution in the transformer core

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