Answer / koti

BDV increases with increase in temperature and lowers in cloudy climate.

Answer / mintu kr. pandit

transformer oil changes are mainly depend on BDV (minimum 30 kv)and maximum allowable moisture constant is 50 PPM at TR. oil

Is any generator is developed which is operated with out diesal or other expensive source?

0 Answers  

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How can identify meter AC or DC without use of symbel?

4 Answers  

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why spark is produced in mosquito bat?and what are the ways to reduce it?

2 Answers   Godrej,

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Usage of flywheel diode in relays

0 Answers   Jindal, Voith,

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Name the different control schemes of electric rive.

1 Answers   DVC,

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my question is that....few days ago i had installed a three phase motor starter for an electric saw.the motor will run and make the hydraulic pressure which will be goes to pressure cylender by up and down lever.two number of limitswitches are also installed on cylinder for safety of motor.now when the arm of cylinder reaches to the upper or lower limit it will cut the motor's line.and motor will be stop.now wana know that what will i do that motor runs continue after the limitswitch cut it down but it shold not be made any pressure.pls answer me in brief.

3 Answers  

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where this neutral connection goes after returning from the load(home ,factory,industries).Is it grounded at the transformer side or atthe generator side .If it is grounded then we also ground the earth connection.is there any problem with this.

1 Answers   IOCL,

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why dc supply is not applied for step up or down in transformer

3 Answers  

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There is any especial requirement for motor to drive through with VFD?

0 Answers  

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I have a transformer whose primary operates at 230V, 50Hz for which the secondary voltage will be 12V, 50Hz. What will be the secondary voltage if the primary is fed with 400V, 8KHZ Signal?

6 Answers   ABB,

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what are the standard values for resistances(Megger testing) between L&N, L&E and N&E (L=Live,N=Neutral, E=Earth)?

1 Answers   CESU,

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IF avr is voltage regulator of genset means why we are giving genset CT sense to AVR ?

3 Answers   ABB,

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