Answer / loganath

Motor protection relays are available in the market such as
Areva make MOTPRO, MiCOM P22X, but these relays are costly,
not used for small motors unless application warrants the
same, CT is required to connect with these relays unlike
direct connection for OLR

A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate rotor frequency. A 50 Hz B 0 Hz C 4 Hz D 6 Hz

3 Answers  

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Sir 33kva 2 transformer load 900 amp calc 1800 amp mana jayega

0 Answers   Classic Infotech,

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Why we use cosine angle for calculating power factor not in sine angle ?

4 Answers  

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When capacitor bank connect on line. It's draw some current but it's current not increase of main line ammeter. Why?

1 Answers   MCL, Star Wire,

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if 400kv line is connected to the load but neutral ii not be connceted then wt ll happen

1 Answers  

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What will happen if the generator turns in a wrong direction?

2 Answers  

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can we use inductor for passing or blocking of AC or DC?

3 Answers   Moser Baer, NTPC,

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Which UPS (inverter) is better and why ? 12 V inverter and 24 V (two 12 V batteries in series) inverter which is better ......... which has the longer backup which has the greater charging time which has the greater discharging time thank you

2 Answers  

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Please give me a ansver for why currant transforme noe point should erthing

1 Answers  

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what is the relationship between current&voltage in practical purpose ?

1 Answers   Indorama,

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advantages & Disadvantages of Solar power system?

2 Answers  

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what type of current supply is given to house holds?

7 Answers  

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