Answer Posted / boss

synchronous motors are used in paper mill(as the paper & textile mills are required to operate at const.speed)

Why we are using Isolation Power Transformer inplace of commercial power transformer? What's the difference between them?

2175

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i have seen one 8.4 MW synchronous motor in a plant located in bellary it is fixed with brushless rotary rectifier ,anybody can explain its start up principle

1986

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What is domestic transformer? Draw the connection of domestic transformer.

2327

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which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?

2055

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what is the function of Moulded case circuit breaker, why it is called Moulded?

1560

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In single phase ac ups supply when current is measured with tong tester neutral current is found more than phase current.What is the reason?

2134

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any one can explain what is the size of pvc,armoured, various sizes of powr cable dia?

1932

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how to changeover ups in this power failur time?

2012

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i need the details about bhel exam.how to apply for that.please send to my email-id.thenmozhi2k7@gmail.com

2026

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WHAT IS MEANT BY SHEATH VOLTAGE IN 132Kv cable?

2288

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1.what is the reason for transformer and lightning arrester blast in 33kv system

3103

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how to calculate the surge level of surge suppressors related to the SF6 cicuit breakers?

1982

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1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

4880

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am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?

1880

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why swityard is necessrry requirement in any bis power distributin systems?

2381

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