Answer / shailesh tankni

I think it is ac having a very high frequency, as when a
lighting discharge is there it induces a voltage of high
frequency in the transmission line.
due to this effect many times the domestic appliances also
gets damaged.
and this is the reason why the protection devices use
filtering devices like inductance and capacitance which are
designed according to the frequency value and is used to
bypass these induced charge and earth them.

Answer / k.prakashchandra

DC

Answer / prashant tiwari

NOT CORRECT.IT IS A STATIC CURRENT THAT CAN NOT EVEN MEASURE.

Answer / aniruddh

both ac and dc dc current decay down after some ac
cycle.{after two cycle of ac}........

Answer / nizam

Initially it is an AC with very high amplitude,but within 2-3nsec after 4 cycle mostly it follows dc nature.Harmonics concept comes into picture thereafter.

Answer / k.prakashchandra

It is a discharge between oppositely charged

Answer / nagendra

stictly speaking it is unidirectional in nature

why we condut tan delta test i want brief explain?

3 Answers  

my 10 hp submersible pump is tripping when connected through ELCB.I have checked the megger value of the coil's with body.It was found to be 0.2mega ohm.that is leakage is there.But when connected to mccb it is not tripping.no leakage current in the motor.Is it safe to connect to mccb? what are the problem's will arise if future?also tell me in ELCB no neutral is connected to motor.than how ELCB was working?

1 Answers  

what happen if we supply ac to the field of a alternator?

5 Answers  

Hi My dear all Friends, There is a question regarding HVAC Engineering and widely used in Power Projects. Question- What is the diffrence Between REF, SEF and Differential Protection....???? Where REF - Restricted Earth Fault SEF - Senstive Earth Fault.

0 Answers  

what is the formula to find Amp. for an 3 phase moter both if H.P. or if kW is known?

5 Answers   Uttam,

Define early construction of human being

0 Answers  

how to calculate the battery AH

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What is Isolation Transformer???

4 Answers   Emerson,

How do you classify the different types of torques?

2 Answers  

What will happen if the rotor of an induction motor is fed from a 3 phase supply and the stator short circuited ?

4 Answers  

can SMPS work in DC supply ?

10 Answers   HCL, IBM, Reliance,

what is the voltage present in the telephone?

10 Answers   Infosys,