Why capacitor bank is not neccessery to switch on,pls answ me with formula

2 Answers  

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Induction generator has = A negative speed B negative slip C negative voltage D negative current

2 Answers  

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if generator is running in iso mode parrallel with grid and suddenly grid breaker off what will happen?

6 Answers   century,

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defult setting in p220 micom motor proction relay for 11kv,640kw,f.l.a.-40a,1440rpm ht motor?

0 Answers  

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In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is

0 Answers   Caterpillar,

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How to know the back up time for a 5KVA UPS which is connected to 15 nos. of computers? Is there any formula for this? pls. tell me.

1 Answers   HAL,

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

0 Answers  

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1)Why electric shock is feel ?? n in a Electric Train why we didnt feel that ? 2)What is the reason for transformer Noise ?? 3)What is relation b/w Transmission Lines & Communication Lines ? 4)Which material is used for making Transformer oil & How u measure its dielectric strength & Name the test ?

14 Answers   NTPC, Tata Power,

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WE are using a 63A MCCB(SIEMENS MAKE) for one of the feeder in LV substation panel.It is supplying to a lighting & power socket DB.Settings in the MCCB is Ir = 63 * 1 , Isd = 8 times of Ir , tsd = 0.5 sec( I2 t off). Sometimes this MCCB is tripping .But no trip in DB MCB. Can anybody tell me reason ? From where i can know about the MCCB settings?

5 Answers  

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List the time domain specifications.

0 Answers  

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Why the transmision line are 11,33,63,132kv?

10 Answers   Power Grid,

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why pure sine wave inverter used for desktop ?

1 Answers  

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