Answer Posted / sanjay sharma

It is depend on type of scheme, in protection , if three phase ckt then reversal of 1 CT polarity relay will (if set value Reach), reversal of all three phases will not effect for normal protection (except to directional protection). In case of metering Ameter will not effect, but energy meter will not work,if single CT reverse in case of three phase, mode (import/export) will change.

how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING) I O (current operating)?

2213

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What is the use of Surge Capacitor in LAVT?

13717

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what will happen if multimeter(selector switch at DC voltage) and terminal at current is connected to DC supply?

1971

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either water sensor or flow meter,how we observe the water level, f any other equipment are in market ?

1881

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Explain cmrr?

1134

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oil cooled transformer

2231

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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

1979

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What is the ratio of Booster transformer?

2172

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how to find motors H.P. whout any rating? (only give you a motor and multimeter)

6099

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How to distinguish whether MCB is DC or AC looking at it physically

1978

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What is Faraday's law

1512

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before synchronizing an alternator,power factor is leading ,why?

1569

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I am having a 42KW 3 phase electrical heating furnace, heating element is 80/20 nichrome material, my connections is made in such a way that 2 star connection compromising 2 coils per phase so totally 12 coils, shall if i use it unbalanced star condition (instead of 2 group of 3 phase or 1 group of 3 phase, connecting 4 phases of 5 phases) what will be the consequences and is it acceptable?

1683

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Dry type transformers

1884

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is it possible to say motor horsepower number without seeing name plate(when name plate damaged)

2089

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