Answer Posted / prakash gokhale

Please check for the mechanical assembly of the VCB. Some
times due to some misalighments breaker can not be closed
mechanical or electricaly even if CC & OC are ok.

Why star delta starter is preferred with induction motor?

1103

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A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.

1981

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What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?

2277

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What do you mean by turns ratio of instrument transformer?

1090

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how we can explain arc heatng?

1919

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Why do we require transformer with less specific weight if supply frequency is increased?

1574

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To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors

1967

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how external lighting design? please give examples?

1874

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In a single how much maximum current and watts using

2153

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What is the difference between PLC and Embeded system

1428

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Why collecting electrode of ESP to be earthed

2131

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what does a k rating in a transformer means?

2493

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If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?

1891

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write circuit diagram for a motor rotate in forward direction once it started and when pressed the same button it should rotate in anticlockwise.

2546

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How select ELCB for 32amp. socket having quantity 12Nos. We have to do this wiring in PLANT. Please Also explain the incoming cable specification.

1869

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